S

S/MIME (RFC 2311)

S/MIME largely replaces PEM (Privacy Enhanced E-mail). MIME defined a common way that an e-mail message could contain binary attachements, and therefore integrates better into e-mail systems than PEM. PEM was never widely implemented, whereas S/MIME can be found in most popular e-mail readers. From Hacking-Lexicon http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

s2p

Sed to Perl translator From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

S360

System /360 (IBM), "S/360" From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

S370

System /370 (IBM), "S/370" From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

s3mod

Player for MOD and S3M music files This is a tracker music player. It is capable of playing S3M files in addition to 4,6, and 8 track MOD files. It supports dsp output and the Gravis Ultrasound. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

s3switch

Manage the output device on S3 Savage chips Depending on the Savage chip this utility can be used to switch between LCD, CRT and TV output. Additionally one can choose between NTSC, NTSCJ and pal TV signal format. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SA

Source [MAC] Address (SNA, Token Ring, ATM, FDDI, ...) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SA

Storage Array From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SA

Structured Analysis / Strukturierte Analyse (CASE) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SA

System Administrator From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SA

Systems Analyst From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SAA

Standard Application Architecture (IBM) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SAA

Standards Association of Australia (org., Australia) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SAAL

Signalling ATM Adaptation Layer (ATM) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SABB

Storage Array Building Block From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sablecc

An Object-Oriented Compiler Framework SableCC is an object-oriented framework that generates compilers (and interpreters) in the Java programming language. This framework is based on two fundamental design decisions. Firstly, the framework uses object-oriented techniques to automatically build a strictly typed abstract syntax tree that matches the grammar of the compiled language and simplifies debugging. Secondly, the framework generates tree-walker classes using an extended version of the visitor design pattern which enables the implementation of actions on the nodes of the abstract syntax tree using inheritance. These two design decisions lead to a tool that supports a shorter development cycle for constructing compilers. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sablotron

an XSL processor fully implemented in C++ Sablotron is an XSL processor fully implemented in C++. The goal of this project is to create a reliable and fast XSLT processor conforming to the W3C specification, which is available for public and can be used as a base for multiplatform XML data distribution systems. This package includes Sablotron binaries, which need libsablot0 to work. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SABM

Set Asynchronous Balanced Mode (LABM, LAPB, HDLC) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SABME

Set Asynchronous Balanced Mode Extension (SABM) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sabre

Fighter plane simulator. SABRE is an on-going game development for the Linux Operating System, worked on as a labor of love by flight-simulation enthusiasts. For now, SABRE is focusing on the older jets and piston-engined fighters of the Korean War / Cold War era. Featured are F-86 SabreJet, MiG-15, F-84 ThunderJet, F-51 Mustang, and Yak-9. All of the planes in the game can be flown by the player as well as the computer pilots. This package contains the svgalib binary. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SABRE

Semi-Automatic Business Related Environment (OS, IBM 7090) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sabre-common

Fighter plane simulator. SABRE is an on-going game development for the Linux Operating System, worked on as a labor of love by flight-simulation enthusiasts. For now, SABRE is focusing on the older jets and piston-engined fighters of the Korean War / Cold War era. Featured are F-86 SabreJet, MiG-15, F-84 ThunderJet, F-51 Mustang, and Yak-9. All of the planes in the game can be flown by the player as well as the computer pilots. This package contains binaries and data common to both svgalib and X version of sabre. Homepage: http://sabre.cobite.com/ From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sac

Login accounting Performs login accounting, just like the ac program but with totals, per day and per users. Also performs average usage and hourly profiling. Tons of other options. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SAC

Service / Special Area Code From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SAC

Single Attachment Concentrator (FDDI) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SAC

Strict Avalanche Criterion (cryptography) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SACCH

Slow Associated Control CHannel (GSM, DCCH, mobile-systems) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SACT

SPARC Application Conformance Test (SI, SPARC) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SAD

Serial Analog Delay From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SADF

Semi-Automatic Document Feeder From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SADT

Structured Analysis and Design Techniques (SA) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SAF

Service Access Facilities (Unix) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SAFE

Security And Freedom through Encryption [law] (USA, cryptography) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

safecat

safely copy stdin to a file safecat is a program which implements Professor Daniel Bernstein's maildir algorithm to copy stdin safely to a file in a specified directory. It can be used to write mail messages to a qmail-style maildir, or to write data to a "spool" directory reliably. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

safe_finger

finger client wrapper that protects against nasty stuff from finger servers From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SAFTE

SCSI Accessed Fault-Tolerant Enclose (SCSI, RAID, Intel, NStor), "SAF-TE" From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SAG

SQL Access Group (org., manufacturer, DB) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SAGE

Semi-Automatic Ground Environment system (OS, IBM AN/FSQ7, mil.) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SAGE

Software Aided Group Environment (GSS, NUS) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SAHF

Store AH Into Flags (assembler) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SAIL

Stanford Artificial Intelligence Laboratory [language] (USA) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SAL

Security Access List From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SAL

Semware Applications Language (Semware) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SAL

Symbolic Assembly Language (assembler) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SAL

System Abstraction Layer From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SALT

Script Application Language for Telix From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SALT

Suse Advanced Linux Technology (Suse, Linux) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SALU

Structured Assembly Language Utilities From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SAM

SCSI-3 Architecture Model From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SAM

Security Accounts Manager From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SAM

Sequential Access Method / Mode (SAM, DAM) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SAM

Sort And Merge From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SAM

System Activity Monitor From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sam

the plan9 text editor -- ed with a gui and multi-file editing sam -d can be used without X (with an ed-like interface -- but with more powerful regular expressions, the capacity to edit multiple files with a single command, and unlimited undo). Files can be added to an exiting sam session using the B command. sam without the -d option is an graphical editor with pop-up menus and a point+click interface. You'll want to read sam's manual page to use the full power of sam, but you can probably figure out how to do basic editing with a minimum of trial and error. If you have a Plan 9 terminal, you can use the Plan 9 terminal with sam to edit unix files, but not vice-versa; the Plan 9 authentication scheme does not honor remote execution requests from a non-Plan 9 system. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SAM (Security Access Monitor)

On Microsoft Windows 2000 (and Windows NT), all the user account information is stored within the SAM. It exists as a single file on the disk. The SAM is the primary target when hackers break into a system because it can be run through a password cracker. Key point: The SAM file is located in the path %systemroot%/system32/config/SAM However, a backup is also stored in the location %systemroot%/repair/sam._ as well as on any repair disk generated. (Note: if new repair disks haven't been created, then you'll likely only be able to see the Administrator's password there). Hackers usually go after the "repair" versions because they are not locked by the operating system. Tools: pwdump/pwdump2 Dumps the current password information using Windows registry calls. Must have administrative access for this to work. The data is written in a format for crack programs. samdump Reads the password information from the SAM file in a format suitable for inputting into crack programs. l0phtcrack The most popular utility for cracking Windows passwords. All these tools are available at http://www.l0pht.com/. History: The original version of WinNT allowed the password hashes to be easily retrieved, making cracking easy. In SP3, an optional utility called SYSKEY was added that encrypts the hashes. In order to decrypt them, the administrator needs to either type in the passphrase at boot time, store the passphrase on a floppy, or put the passphrase in the registry (dramatically reducing security, of course). Whatever way is used to boot the system, the keys are then stored in unencrypted format in memory, so administrative access can still read them (using the pwdump2 utility). SYSKEY is optional on WinNT, but is always running on Win2k. Key point: The PASSPROP and PASSFILT utilities can be used to enforce the choice of better passwords. From Hacking-Lexicon http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

Samba

A free software implementation of the server message block (SMB) network file sharing protocol. Samba is usually implemented on networks that have a mixture of UNIX, Linux, and Windows computers and is designed for interoperable file sharing. From Redhat-9-Glossary http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

samba

A LanManager like file and printer server for Unix. The Samba software suite is a collection of programs that implements the SMB protocol for unix systems, allowing you to serve files and printers to Windows, NT, OS/2 and DOS clients. This protocol is sometimes also referred to as the LanManager or NetBIOS protocol. This package contains all the components necessary to turn your Debian GNU/Linux box into a powerful file and printer server. Currently, the Samba Debian packages consist of the following: samba - A LanManager like file and printer server for Unix. samba-common - Samba common files used by both the server and the client. smbclient - A LanManager like simple client for Unix. swat - Samba Web Administration Tool samba-doc - Samba documentation. smbfs - Mount and umount commands for the smbfs (kernels 2.0.x and above). libpam-smbpass - pluggable authentication module for SMB password database libsmbclient - Shared library that allows applications to talk to SMB servers libsmbclient-dev - libsmbclient shared libraries winbind: Service to resolve user and group information from Windows NT servers It is possible to install a subset of these packages depending on your particular needs. For example, to access other SMB servers you should only need the smbclient and samba-common packages. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

Samba

A lot of emphasis has been placed on peaceful coexistence between UNIX and Windows. Unfortunately, the two systems come from very different cultures and they have difficulty getting along without mediation. ...and that, of course, is Samba's job. Samba <http://samba.org/> runs on UNIX platforms, but speaks to Windows clients like a native. It allows a UNIX system to move into a Windows ``Network Neighborhood'' without causing a stir. Windows users can happily access file and print services without knowing or caring that those services are being offered by a UNIX host. All of this is managed through a protocol suite which is currently known as the ``Common Internet File System,'' or CIFS <http://www.cifs.com>. This name was introduced by Microsoft, and provides some insight into their hopes for the future. At the heart of CIFS is the latest incarnation of the Server Message Block (SMB) protocol, which has a long and tedious history. Samba is an open source CIFS implementation, and is available for free from the http://samba.org/ mirror sites. Samba and Windows are not the only ones to provide CIFS networking. OS/2 supports SMB file and print sharing, and there are commercial CIFS products for Macintosh and other platforms (including several others for UNIX). Samba has been ported to a variety of non-UNIX operating systems, including VMS, AmigaOS, and NetWare. CIFS is also supported on dedicated file server platforms from a variety of vendors. In other words, this stuff is all over the place. From Rute-Users-Guide http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

Samba

a suite of programs which work together to allow clients to access to a server's filespace and printers via the SMB (Session Message Block) protocol. This means that you can redirect disks and printers to Unix disks and printers from Lan Manager clients, Windows for Workgroups 3.11 clients, Windows NT clients, Linux clients and OS/2 clients. From Linux Guide @FirstLinux http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

Samba

Samba adds Windows-networking support to UNIX. Whereas NFS is the most popular protocol for sharing files among UNIX machines, SMB is the most popular protocol for sharing files among Windows machines. The Samba package adds the ability for UNIX systems to interact with Windows systems. Key point: The Samba package comprises the following: smbd The Samba service allowing other machines (often Windows) to read files from a UNIX machine. nmbd Provides support for NetBIOS. Logically, the SMB protocol is layered on top of NetBIOS, which is in turn layered on top of TCP/IP. smbmount An extension to the mount program that allows a UNIX machine to connect to another machine implicitly. Files can be accessed as if they were located on the local machines. smbclient Allows files to be access through SMB in an explicity manner. This is a command-line tool much like the FTP tool that allows files to be copied. Unlike smbmount, files cannot be accessed as if they were local. smb.conf The configuration file for Samba. From Hacking-Lexicon http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

samba-client

Samba-client provides some SMB clients, which complement the built-in SMB filesystem in Linux. These allow the accessing of SMB shares, and printing to SMB printers. From Mandrake 9.0 RPM http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

samba-server

Samba-server provides a SMB server which can be used to provide network services to SMB (sometimes called "Lan Manager") clients. Samba uses NetBIOS over TCP/IP (NetBT) protocols and does NOT need NetBEUI (Microsoft Raw NetBIOS frame) protocol. Samba-2.2 features working NT Domain Control capability andincludes the SWAT (Samba Web Administration Tool) that allows samba's smb.conf file to be remotely managed using your favourite web browser. For the time being this is being enabled on TCP port 901 via xinetd. SWAT is now included init's own subpackage, samba-swat. Users are advised to use Samba-2.2 as a Windows NT4 Domain Controller only on networks that do NOT have a WindowsNT Domain Controller. This release does NOT as yet have Backup Domain control ability. Please refer to the WHATSNEW.txt document for fixup information. This binary release includes encrypted password support. Please read the smb.conf file and ENCRYPTION.txt in the docs directory for implementation details. From Mandrake 9.0 RPM http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SAMI

Synchronized Accessible Media Interchange (MS) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

saml

Simple Algebraic Math Library A C library for symbolic calculations, accompanied by some application programs (samuel, factorint, induce), and Python bindings. The library provides an object-oriented framework for defining and handling mathematical types, and implements the most common data types of computer algebra: integers, reals, fractions, complex numbers, polynomials, tensors, matrices, etc. The application programs consist of an interactive symbolic calculator (samuel), a programming language (induce) and a program to factorize integers (factorint). From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

Sampling rate

The frequency with which a recording device, such as a sound board, takes readings of the sound it is recording. High-quality sound boards, like the equipment used to record audio compact disks, hae sampling rates of 44.1 kilohertz (KHz) or higher. Although sound boards with lower sampling rates might be adequate for recording simple noises or even voice clips, they are not adequate for recording music. From QUECID http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SAN

Storage Area Networks From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sandbox

A "sandbox" is a mode of running a program that prevents it from having full access to the rest of the system. This is especially important for mobile code such as Java. A client can trust the code automatically downloaded from a web-site if the code runs in a sandbox and cannot harm the rest of the system. Key point: Sandboxes are being used more and more often for servers. This puts walls between different components that can help stop (or slow down) an intruder that has broken into one part of the system. The most important technique is to run services as a user account rather than an administrator/root account. For example, Microsoft's IIS creates a special user account (named "IUSR_XXXX" where XXXX is the system name) that the web-server runs under. When somebody breaks into the web-server, they still cannot gain control over the full system (unless they run some sort of local exploit in order to break out of this sandbox). Example: Example sandboxes are: user accounts As described above, running services under a user account prevents an intruder from gaining control over the entire machine. jail/chroot These utilities limit the view of the filesystem from a program. A program that runs under a chroot environment can only its own subdirectory, but no other parts of the filesystem. virtual machine The technique used by Java is to create an entirely separate "virtual" machine. A Java program has absolutely no access to the real machine except in a few places. A more extensive version of this is software like VMware or SoftPC that creates an entire virtual computer. Using VMware, you can boot a Linux or Windows virtual machine under the real machines. If an intruder compromises the virtual machine, he/she still cannot access the real machine. From Hacking-Lexicon http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sanduhr

an alarm clock, which is designed as a sand-glass Sanduhr is an alarm clock for the X Window System which uses (and requires) the GNOME desktop environment. It has an extensive manual and a complete CORBA interface. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SANE

Scanner Access Now Easy (Open-Source) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sane

Scanner graphical front-ends This package includes scanner graphical front-end xscanimage, and xcam, for acquiring images continuously from cameras. An alternative to xscanimage called xsane is packaged separately. The scanner front-ends use SANE. SANE stands for "Scanner Access Now Easy" and is an application programming interface (API) that provides standardized access to any raster image scanner hardware (flatbed scanner, hand-held scanner, video- and still-cameras, frame-grabbers, etc.). The SANE standard is free and its discussion and development is open to everybody. The current source code is written for UNIX (including Linux) and is available under the GNU public license (commercial application and backends are welcome, too, however). From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SANE

Standard Apple Numeric Environment (Apple) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sane-backends

SANE (Scanner Access Now Easy) is a sane and simple interface to both local and networked scanners and other image acquisition devices like digital still and video cameras. SANE currently includes modules for accessing a range of scanners, including models from Agfa SnapScan, Apple,Artec, Canon, CoolScan, Epson, HP, Microtek, Mustek, Nikon, Siemens, Tamarack, UMAX, Connectix, QuickCams and other SANE devices via network. For the latest information on SANE, the SANE standard definition, and mailing list access, see http://www.mostang.com/sane/ This package does not enable network scanning by default; if you wish to enable it, install the saned package and set up the sane-net backend. This package contains the backends for different scanners. From Mandrake 9.0 RPM http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sane-find-scanner

find SCSI and USB scanners and their device files From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

saned

SANE network daemon From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sanitizer

The Anomy Mail Sanitizer - an email virus scanner The Anomy sanitizer is what most people would call "an email virus scanner". That description is not totally accurate, but it does cover one of the more important jobs that the sanitizer can do for you - it can scan email attachments for viruses. Other things it can do: Disable potentially dangerous HTML code, such as javascript, within incoming email. Protect you from email-based break-in attempts which exploit bugs in common email programs (Outlook, Eudora, Pine, ...). Block or "mangle" attachments based on their file names. This way if you don't *need* to receive e.g. visual basic scripts, then you don't have to worry about the security risk they imply (the ILOVEYOU virus was a visual basic program). This lets you protect yourself and your users from whole classes of attacks, without relying on complex, resource intensive and outdated virus scanning solutions. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sanity check

Verifying data and/or code does not contain careless errors. In the computer world, this often refers to checking that the output of a program produces the expected results and not inaccurate results from careless programming. From LinuxDig.com http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

saoimage

A utility for displaying and processing astronomical images. SAOimage (pronounced S-A-0-image) is a utility for displaying astronomical images wich runs under the X11 window environment. Image files can be read directly, or image data may be passed through a named pipe (Unix) or a mailbox (VMS) from IRAF display tasks. SAOimage provides a large selection of options for zooming, panning, scaling, coloring, pixel readback, display blinking, and region specification. User interactions are generally performed with the mouse. Capability of reading IRAF 2.11 .imh files added. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SAP

Service Access Point (OSI) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SAP

Service Advertising Protocol (Novell, Netware, IPX) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SAP

Session Announcement Protocol (Internet, RFC 2974) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SAP

Symbolic Assembler Program (IBM, IBM 704) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SAP

SystemAnalyse und Programmentwicklung (manufacturer, predecessor) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SAP

Systems, Applications and Products [in data processing] [ag] (manufacturer) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sapphire

A minimal but configurable X11R6 window manager Sapphire is a window manager for X11R6. It is fairly minimal in what it provides on screen: one toolbar, the usual window borders and a popup menu from the root window. It supports themes as X resource files, and the menu is editable. If you install the 'menu' package, you'll get an automatically-updated 'Debian' submenu of installed programs. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SAR

Segmentation And Reassembly From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SAR

Store Address Register (IC) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SARAH

Standard Automated Remote-to-AUTODIN Host (AUTODIN, mil.) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sarien

An interpreter for AGI resources Sarien decodes and plays games written for the Sierra On-Line Adventure Game Interpreter (AGI) system, such as Leisure Suit Larry in the Land of the Lounge Lizards, Space Quest I and II, and King's Quest I to IV. Currently AGI versions 2 and 3 are recognized; support for older AGI v1 games is not available. You need the files from the original games. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SARPDU

Segmentation And Reassembly Protocol Data Unit (ATM, PDU), "SAR PDU" From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SART

Structured Analysis / Real Time (SA, CASE), "SA/RT" From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SARTS

Switched Access Remote Test System From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SAS

Session Active Screen (IBM) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SAS

Simulation Automation System From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SAS

Single Attachment Station (FDDI) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SAS

Statistical Analysis System From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SASE

Specific Application Service Element (ISO, OSI, CASE) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sash

Sash is a simple, standalone, statically linked shell which includes simplified versions of built-in commands like ls, dd and gzip. Sash is statically linked so that it can work without shared libraries, so it is particularly useful for recovering from certain types of system failures. Sash can also be used to safely upgrade to new versions of shared libraries. From Mandrake 9.0 RPM http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sash

Stand-alone shell. sash serves as an interactive substitute for /bin/sh, for use when /bin/sh is unusable. It's statically linked, and inludes many standard utilities as builtins (type "help" at the prompt for a reference list). If you've installed sash before rendering your system unbootable, and you have some knowledge of how your system is supposed to work, you might be able to repair your system using init=/bin/sash at the boot prompt. Some people also prefer to have sash available as the shell for a root account (perhaps an under an alternate name such as sashroot) Configuration support is included for people who want this. Note: sash is not intended to serve as /bin/sh, and has few of the interactive features present in bash or ksh. It's designed to be simple and robust, for people who need to do emergency repair work on a system. Also note: sash doesn't include a built-in fsck -- fsck is too big and complicated. If you need fsck, you'll have to get at least one partition or disk working well enough to run fsck. More generally, sash is but one tool of many (backups, backup recovery tools, emergency boot disks or partitions, spare parts, testing of disaster plans, etc.) to help you recover a damaged system. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SASI

Shugart Associates System Interface From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sasl-bin

Programs for manipulating the SASL users database This is the Cyrus SASL API implementation. It can be used on the client or server side to provide authentication. See RFC 2222 for more information. This package contains common binary files for plugin modules. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sasl2-bin

Programs for manupulating the SASL users database This is the Cyrus SASL API implentation, version 2. See package libsasl2 and RFC 2222 for more information. This package contains common binary files for plugin modules. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SAST

South Australia Standard Time [+0930] (TZ) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SAT

Standard AUTODIN Terminal (AUTODIN, mil.) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SAT

Summed Area Table (3D, MIP) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SATAN

Security Administrator Tool for Analyzing Networks (Internet) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SATAN (Security Administrator Tool for Analyzing Networks)

A vulnerability scanning tool designed to hunt for many ways into a system. Much hyped at the time; people feared that it would give a powerful tool into the hands of hackers everywhere. In practice, it was a dud: it was much to "noisy", was already outdated by the time it was released, was impossible to setup, and hasn't been really maintained. From Hacking-Lexicon http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SATAN (Security Administrator Tool for Analyzing Networks)

Program designed to assess the security status of a computer or local area network (LAN) connected to the Internet. The program determines whether Internet-related software is misconfigured in a way that could render the system vulnerable to a cracker. The program is controversial because intruders as well as system administrators can use it to find loopholes. The controversy deepened when the program's authors, Dan Farmer and Wietse Venema, made the program publicly available through the Internet. From QUECID http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SATCOM

SATellite COMmunications From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SATF

Shared Access Transport Facility From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SAU

Secure Access Unit From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sauce

SMTP defence software against spam SAUCE (Software Against Unsolicited Commercial Email) sits between the Internet and your existing Mail Transfer Agent (e.g. Exim). It does a number of checks on incoming mail, including being able to blacklist senders and their sites automatically when they mail special `spam bait' addresses. This is an ALPHA version and should be used by experts only. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

savant

The University of Cincinnati's free VHDL 93 Analyzer This is the analyzer and intermediate representation for a free VHDL simulation system from the University of Cincinnati's Experimental Computation Laboratory. "scram", SAVANT's analyzer, converts VHDL into the AIRE intermediate standard form. AIRE is designed to be extensible by the user so that they can easily insert their own back ends. SAVANT includes a VHDLpublishing back end and a C++ publishing back end. The generated C++ can be compiled and linked against the TyVis library to allow end to end sequential or parallel simulation of VHDL. This version of the Debian package supports only sequential simulation - future releases should support parallel simulation as well. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

save-session

Saves the current GNOME session (or terminates it) From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

savelog

save a log file From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sawfish

A highly configurable window manager for X11. Sawfish is an extensible window manager using an Emacs Lisp-like scripting language--all window decorations are configurable, the basic idea is to have as much user-interface policy as possible controlled through the Lisp language. This is no layer on top of twm, but a wholly new architecture. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sawfish-gnome

A highly configurable window manager for X11 and Gnome. Sawfish is an extensible window manager using an Emacs Lisp-like scripting language--all window decorations are configurable, the basic idea is to have as much user-interface policy as possible controlled through the Lisp language. This is no layer on top of twm, but a wholly new architecture. This package contains the capplets to configure Sawfish in the Gnome control center, and the Gnome support. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SAX

Simple API for XML (API, XML) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SAX

SUSE Advanced X [configuration tool] (SUSE, Linux) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

saxon-catalog

Catalog support and wrapper the Saxon XSLT Processor This package provides a simple front-end to Saxon for processing XML source files with XSL stylesheets. Catalog support is provided by an extension class to Norm Walsh's Arbortext Catalog Classes. A wrapper script for general saxon usage is also included. This package works well for processing DocBook XML sources. Author: Jirka Kosek <jirka@kosek.cz> Homepage: http://www.kosek.cz/xml/saxon/ From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

saydate

speaks the current date through your sound card Says the current date and uptime through your sound card. Requires you have a sound output device available. Also includes au2raw, a sox wrapper which converts a .au file to a .raw file. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

saytime

speaks the current time through your sound card Say the current time through your sound card. Requires you have a sound output device available. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SB

Sound Blaster [audio card] (audio) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SBA

SideBand Address [port / bus] (AGP) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SBA

Standards-Based Architectures From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SBA

Synchronous Bandwidth Allocation (SMT, FDDI) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SBA

System For Business Automation From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SBC

SCSI Block Commands (SAM) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SBC

Single Board Computer From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SBC

Small Business Computer From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SBCCS

Single Byte Command Code Set [protocol] From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sbcl

Steel Bank Common Lisp, a fork from CMUCL SBCL is a Common Lisp compiler with a transparent build process, that aims for correctness and ANSI compliance. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SBCS

Single Byte Character Set (ASCII, DBCS) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SBF

Sequential Block Filemanager (OS-9) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SBH

Secure Backbone Hub (Accton) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SBI

Storage Bus Interconnect From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SBI

Synchronous Bus Interface From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SBIS

Sustaining Base Information System From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SBL

Super BASIC Language (BASIC) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SBLC

Sustaining Base Level Computer From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sbm

Smart Boot Manager (SBM) is a full-featured boot manager. Smart Boot Manager (SBM) is an OS independent and full-featured boot manager with an easy-to-use user interface. The main goals of SBM are to be absolutely OS independent, flexible and full-featured. It has all of the features needed to boot a variety of OSes from several kinds of media, while keeping its size no more than 30K bytes. In another words, SBM does NOT touch any of your partitions, it totally fits into the first track (the hidden track) of your hard disk! It's capabilities: * Automatically searches drivers and partitions * Powerful Boot Schedule * Booting from CD-ROM * Swapping driver ID * Auto Delay Boot * Sending keystrokes to the operating system * Easy Customized Theme file * Password protection * Y2k bug work-around for old BIOSes From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SBMS

Southwestern Bell Mobile Service From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SBP

SCSI-3 serial Bus Protocol (SAM) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SBS

Small Business Server From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sbuild

Tool for building Debian binary packages from Debian sources sbuild builds binary packages from source. It can do its work in chroots so both stable and unstable environments can be used on the same machine. It's also useful for figuring out a package's build dependencies. sbuild is part of the wanna-build build system used by most architectures to build packages for Debian. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SBUS

Sun [i/o interface] BUS (Sun, SPARC), "SBus" From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SC

SubCommittee (ISO, TC, IEC, ...) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sc

Text-based spreadsheet with VI-like keybindings "Spreadsheet Calculator" is a much modified version of the public- domain spread sheet sc, which was posted to Usenet several years ago by Mark Weiser as vc, originally by James Gosling. It is based on rectangular table much like a financial spreadsheet. Its keybindings are familiar to users of 'vi', and it has most features that a pure spreadsheet would, but lacks things like graphing and saving in foreign formats. It's very stable and quite easy to use once you've put a little effort into learning it. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCA

Scalable Cooperative Architecture From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCA

Software Corporation of America (manufacturer, USA) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCA

Synchronous Clock Adjustment From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCAF

Service Control Agent Function (IN) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCAI

Scandinavian Conference on Artificial Intelligence (conference, FAIS, AI) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

Scalable font

A screen or printer font that you can enlarge or reduce to any size, within a specified range, without introducing unattractive distortions. Outline font technology is most commonly used to provide scalable fonts, but other technologies - including stroke fonts, which form characters from a matrix of lines - are sometimes used. From QUECID http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

scalable-cyrfonts

scalable Cyrillic fonts This package includes Cyrillic Type1 fonts for the following font families: Times, Helvetica, Courier, Avant Garde, Palatino, New Century Schoolbook, Bookman Light and Teams. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

scalable-cyrfonts-tex

scalable Cyrillic fonts for TeX This package makes the fonts from the package scalable-cyrfonts available to TeX. It installs all needed TeX font metric files, virtual fonts, font definitions and some style packages. Please read the file /usr/share/doc/scalable-cyrfonts-tex/README.Debian. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

scalable-cyrfonts-x11

scalable Cyrillic fonts for X This package makes the fonts from the package scalable-cyrfonts available to the X server or font server. For proper reencoding it needs capable X server or font server. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

scalapack-lam-test

Scalable Linear Algebra Package ScaLAPACK is the parallel version of LAPACK. It depends on PVM or MPI. This package provides the tester applications. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

scalapack-mpich-test

Scalable Linear Algebra Package ScaLAPACK is the parallel version of LAPACK. It depends on PVM or MPI. This package provides the tester applications. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

scalapack-pvm-test

Scalable Linear Algebra Package ScaLAPACK is the parallel version of LAPACK. It depends on PVM or MPI. This package provides the tester applications. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

scalapack-test-common

Test data for ScaLAPACK testers. The ScaLAPACK tester in scalapack-lam-test or scalapack-mpich-test need some data provided by this package. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

scalapack1-lam

Scalable Linear Algebra Package ScaLAPACK is the parallel version of LAPACK. It depends on PVM or MPI. This package provides the shared libraries, it depends on the LAM implementation of MPI. Also included: PBLAS, Parallel Basic Linear Algebra Subprograms. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

scalapack1-mpich

Scalable Linear Algebra Package ScaLAPACK is the parallel version of LAPACK. It depends on PVM or MPI. This package provides the shared libraries, it depends on the MPICH implementation of MPI. Also included: PBLAS, Parallel Basic Linear Algebra Subprograms. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

scalapack1-pvm

Scalable Linear Algebra Package ScaLAPACK is the parallel version of LAPACK. It depends on PVM or MPI. This package provides the shared libraries needed to run applications. Also included: PBLAS, Parallel Basic Linear Algebra Subprograms. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCAM

SCSI Configured AutoMatically (SCSI) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCAMC

Symposium on Computer Applications in Medical Care (conference) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCAN

Switched-Circuit Automatic Network From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

scan (scanner)

This word is overused to the point that it is frequently confusing what people are talking about. The problem is that a scanner can be either active or passive. Example: There are variations of virus scanners: background scanner Scans for viruses continuously in the background. on-access scanner Scans a file for viruses whenever it is accessed. on-demand scanner Scans the hard disk looking for viruses whenever told to by the user. From Hacking-Lexicon http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

scandetd

Portscan detector for Linux. Scandetd is a portscan detector. By default, it logs incoming TCP connections to the host. If a second connection happens within 1 second, it too is logged to syslog. If scandetd recognizes this pattern as a portscan and sends mail to (by default) root@localhost. Scandetd will also attempt to recognize OS fingerprinting probes. It will attempt to determine the tool being used, at this point Queso or NMAP. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

scanerrlog

Generate summaries from Apache error logs This program allows people to parse Apache error_log files from multiple sources and present a summary of the frequency of error messages in one of a variety of different formats (text, html, xml, pdf). From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

scanimage

scan an image From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

scanlogd

A portscan detecting tool Scanlogd is a daemon written by Solar Designer to detect portscan attacks on your machine. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

scanmail

Mail scanner for Postfix This program is invoked from the .forward file of a user and scans the incoming mails for .vbs .exe .com .bat, and similar attachments. If a message is clean, it is inserted into the users qmail-style Maildir or it is spooled to the users mbox. Otherwise, it is bounced. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

scanner

A peripheral that uses light receptors for reading printed material and digitally transferring the information as image objects into a computer system for processing. From Redhat-9-Glossary http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

scanpci

scan/probe PCI buses From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

scansort

A CSV-based image sorter and verifier ScanSort allows one to sort and verify images based upon information contained in comma-separated-value (CSV) files. It is designed for use by those who collect series of scans from Usenet, the WWW, etc for which a CSV file containing the image names, sizes, CRCs, etc is available. In addition to its image-sorting capabilities, ScanSort can also help manage CSV collections, create lists of images for trading, etc. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

scanssh

get SSH server versions for an entire network The scanssh protocol scanner scans a list of addresses and networks for running SSH protocol servers and their version numbers. The scanssh protocol scanner supports random selection of IP addresses from large network ranges and is useful for gathering statistics on the deployment of SSH protocol servers in a company or the Internet as whole. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

scantv

scan TV channels for stations This utility can scan a channel set for TV stations and write the ones found into a xawtv config file (which is also read by some other utilities like fbtv). It also tries to extract the station names from vbi data. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCB

Subsystem Control Block (OS/2, IBM) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCC

SCSI Controller Commands (SAM) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCC

Serial Communication Controller From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCC

Serial Controller-Chip (IC) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCC

Softarc Certified Consulter (SoftArc) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCC

Specialized Common Carrier From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCC

Standards Council of Canada (org., Canada) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCC

Storage Connecting Circuit From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCCP

Signaling Connection Control Part (MSC, GSM, mobile-systems) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCCS

Source Code Control System (Unix, AT&T, CM) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCCS

Specialized Common Carrier Service From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCCS

Switching Control Center System From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCD

SPARC Compliance Definition (SI, SPARC) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCDE

Significant CALS Data Elements From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCDMS

Society for Clinical Data Management Systems (org., USA) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCE

Structure Chart Editor From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCEF

Service Creation Environment Function (IN) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCEIO

Societe Canadienne pour l'Etude de l'Intelligence par Ordinateur (org., Canada, AI) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCF

Selective Call-Forwarding From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCF

Sequential Character Filemanager (OS-9) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCF

Service Control Function (IN) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCG

Security Classification Guide From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCH

Synchronization CHannel (GSM, mobile-systems) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

Scheme

A small, uniform Lisp dialect with clean semantics, developed initially by Guy Steele and Gerald Sussman in 1975. Scheme uses applicative order reduction and is lexically scoped. It treats both functions and continuations as first-class objects. From Linux Guide @FirstLinux http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCI

Scalable Coherent Interface (ANSI) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

scid

Chess database Shane's Chess Information Database is a chess database application with a graphical user interface. With it you can browse databases of chess games, edit games and search for games by various criteria. Scid uses its own compact and fast database format, but can convert to and from PGN. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCID

Service Channel IDentifier From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

scigraphica

Scientific graphics and data manipulation (Gtk version) SciGraphica is a scientific application for data analysis and technical graphics. It pretends to be a clone of the popular commercial (and expensive) application "Microcal Origin". It fully supplies plotting features for 2D charts. This package is non-Gnome version. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

scigraphica-common

Scientific graphics and data manipulation (shared files) SciGraphica is a scientific application for data analysis and technical graphics. It pretends to be a clone of the popular commercial (and expensive) application "Microcal Origin". It fully supplies plotting features for 2D charts. This package contains shared files, like pixmaps and examples. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

scigraphica-gnome

Scientific graphics and data manipulation (Gnome version) SciGraphica is a scientific application for data analysis and technical graphics. It pretends to be a clone of the popular commercial (and expensive) application "Microcal Origin". It fully supplies plotting features for 2D charts. This package is Gnome version. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sciplot1

widget for scientific plotting The SciPlot Widget is a widget capable of plotting cartesian or polar graphs, including logarithmic axes in cartesian plots. The widget is subclassed directly from the Core widget class, which means that it does not depend upon any other widget set. It may be freely used with Athena, Motif, or the Open Look/Xview widget sets. (There is optional Motif support that causes the widget to be subclassed from XmPrimitive. See the man page.) Features provided in the widget include automatic scaling, legend drawing, axis labeling, PostScript output, multiple plotted lines, color support, user font specification, dashed lines, symbols drawn at points, logarithmic scales on one or both axes in cartesian plots, and degrees or radians as angles in polar plots. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCIT

Semi-Conductor and Interconnect Technologies From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

scite

Lightweight GTK-based Programming Editor GTK-based Programming with with syntax highlighting support for many languages. Also supports folding sections, exporting highlighted text into colored HTML and RTF. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCL

System Control Language From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

scli

a collection of SNMP command line management tools The scli package was written in order to have small and efficient command line utility to monitor and configure network devices and host systems. The scli package is based on the SNMP management protocol and it utilizes a MIB compiler called smidump to generate C stub code. In fact, virtually no SNMP knowledge is required in order to extend the scli programs with new features. In other words, the slogan for this little package is: "After more than 10 years of SNMP, I felt it is time for really useful command line SNMP monitoring and configuration tools. ;-)" (description taken from upstream sources) scli replaces the stools package From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sclient

A gtk-based MUD-client. Sclient is a graphical MUD-client for X that tries to be small, fast, and to use as little CPU as possible. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCM

Segment Control Module From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCM

Service Circuit Modul Mil., Germany From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCM

Service Control Manager (Windows NT) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCM

Small Core Memory From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCM

Software Configuration Management From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCMP

Stream Control Message Protocol (ST2) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCMS

??? [scrambling] (DAT) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCMS

Serial Copy Management System From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

scmxx

Exchange data with Siemens mobile phones SCMxx is a console program that allows you to exchange certain types of data with mobile phones made by Siemens. Some of the data types that can be exchanged are logos, ring tones, vCalendars, phonebook entries, and SMS messages. It works with the S25, S35i, M35i and C35i, SL45, S45 and ME45 and probably others. You need a serial connection (either cable or infrared) to your mobile phone in order to use SCMxx. It basically uses the AT command set published by Siemens (with some other, additional resources). See the website http://www.hendrik-sattler.de/scmxx for details. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCN

Specifications Change Notice From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCNR

Sorry, Could Not Resist (slang, Usenet) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCO

Santa Cruz Operation (manufacturer, Unix) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCO Linux

The SCO Group was formerly known as Caldera International. The company now provides a variety of Linux and Unix solutions. SCO is the North American UnitedLinux partner. Caldera OpenLinux 3.1.1 was released January 2002. SCO Linux 4.0, Powered by UnitedLinux was released at the end of 2002. Now it is no longer available, and moved to the historical section on May 28, 2003. Distribution development is not all that active. From LWN Distribution List http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

scons

A replacement for Make Scons is able to build files from other files, based on the dependency DAG. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCOOPS

SCheme Object Oriented Programming System (OOP) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCOPE

SCalable Object Processing Environment (Creamware) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCOPE

Simple COmmunications Programming Environment (DFUe) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCOPE

Supervisory Control Of Program Execution (OS, CDC 6000) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

scottfree

Interpreter for Adventure International games ScottFree reads and executes TRS-80 format Scott Adams data files. It is possible to run other formats either by writing a loader for that format or a converter to TRS-80 format. Most Adventure International Games are distributed as shareware and are available from ftp://ftp.gmd.de/if-archive/scott-adams/ From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

scotty

The Scotty and Tkined Network Management Tools. Scotty is a set of Tcl extensions to retrieve status information about TCP/IP networks. The extensions include commands to send icmp packets a la ping, to lookup hostnames, to query the portmapper and mount daemons. Also included are generic tcp/udp extensions as well as commands to query the domain name service for a, ptr, hinfo, mx and soa records and commands to query ntp server. log messages can be written by using the syslog command. The perhaps most interesting extension is an interface to the SNMPv1, SNMPv2C and SNMPv3 protocols. Tkined is a small but nice network management station. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCP

Secondary Communications Processors From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

scp

secure copy (remote file copy program) From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCP

Service Control Point (OSI) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCP

Standard Configuration Profile (MODEM) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCP

System Control Program (OS) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCPC

Single Channel Per Carrier From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCPDOS

Seattle Computer Products Dis Operating System (OS, DOS, MS-DOS, predecessor), "SCP-DOS" From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCR

Selective Call Rejection From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCR

Sustainable Cell Rate (UNI, ATM, VBR) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

screaming tty

n. [Unix] A terminal line which spews an infinite number of random characters at the operating system. This can happen if the terminal is either disconnected or connected to a powered-off terminal but still enabled for login; misconfiguration, misimplementation, or simple bad luck can start such a terminal screaming. A screaming tty or two can seriously degrade the performance of a vanilla Unix system; the arriving "characters" are treated as userid/password pairs and tested as such. The Unix password encryption algorithm is designed to be computationally intensive in order to foil brute-force crack attacks, so although none of the logins succeeds; the overhead of rejecting them all can be substantial. From Jargon Dictionary http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

screem

A GNOME website development environment SCREEM is a tag-based Web page editor which aims not only to aid in creating Web pages, but also to provide useful site maintenance facilities, including automatic link updating and site upload facilities. SCREEM has more than just the usual HTML tags, with features for including Javascript, PHP, cascading style sheets, etc within your site. It is written for use with the GNOME (http://www.gnome.org) desktop environment From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

screen

A terminal multiplexor with VT100/ANSI terminal emulation. screen is a terminal multiplexor that runs several separate "screens" on a single physical character-based terminal. Each virtual terminal emulates a DEC VT100 plus several ANSI X3.64 and ISO 2022 functions. Screen sessions can be detached and resumed later on a different terminal. Screen also supports a whole slew of other features. Some of these are: configurable input and output translation, serial port support, configurable logging, multi-user support, and utf8 charset support. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

screen

n. [Atari ST demoscene] One demoeffect or one screenful of them. Probably comes from old Sierra-style adventures or shoot-em-ups where one travels from one place to another one screenful at a time. From Jargon Dictionary http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

screen

screen manager with VT100/ANSI terminal emulation From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

screen

The screen utility allows you to have multiple logins on just one terminal. Screen is useful for users who telnet into a machine or are connected via a dumb terminal, but want to use more than just one login. Install the screen package if you need a screen manager that can support multiple logins on one terminal. From Redhat 8.0 RPM http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

screen name

n. A handle sense 1. This term has been common among users of IRC, MUDs, and commercial on-line services since the mid-1990s. Hackers recognize the term but don't generally use it. From Jargon Dictionary http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCRI

Supercomputer Computations Research Institute (org., USA, HPC) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

scribe

Document Production System Scribe is a programming language designed for the production of electronic documents. With Scribe one can: - Produce HTML web pages. - Produce PS files. - Produce Info files (documentation files suitable for Emacs). - Produce man pages (Unix documentation format). One may also: - Translate Texinfo files into HTML. - Upload Scribe page on an Apache server and dynamically expanse it into HTML when loaded by client. (This feature is not built for the current Debian version.) Scribe is implemented in Bigloo Scheme. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

scribus

a free software desktop publishing program Scribus is a free software layout program for GNU/Linux similar to a couple of proprietary programs from Adobe and Quark. Unlike other programs Scribus uses only Type1 fonts of the X-Server. Therefore there is no fiddling around with installing extra fonts. For this reason the number of fonts is a little bit limited, but you can be sure that your monitor shows exactly the same as the printed output is. Documentation for this package is available in either French, German or English. Please choose your appropriate scribus-doc-XX documentation package. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

scribus-doc-de

German documentation for Scribus Scribus is a free software layout program for GNU/Linux similar to a couple of proprietary programs from Adobe and Quark. These are the documentation files in German. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

scribus-doc-en

English documentation for Scribus Scribus is a free software layout program for GNU/Linux similar to a couple of proprietary programs from Adobe and Quark. These are the documentation files in English. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

scribus-doc-fr

French documentation for Scribus Scribus is a free software layout program for GNU/Linux similar to a couple of proprietary programs from Adobe and Quark. These are the documentation files in French. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

Script

A set of commands stored in a file. Used for automated, repetitive, execution. (Also, see RC File.) From I-gloss http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

script

An executable plain text file; string of commands written to a file and run as one logical program. From Redhat-9-Glossary http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

script

make typescript of terminal session From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

scripts

Programs written to take advantage of a particular exploit. Key point: Elite hackers write scripts, script-kiddies run scripts. Misunderstanding: A lot of "scripts" are written in scripting languages like PERL, but a lot are distributed in C/C++ source form as well. Contrast: 0-day exploit. From Hacking-Lexicon http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

scrollkeeper

A free electronic cataloging system for documentation. It stores metadata specified by the http://www.ibiblio.org/osrt/omf/ (Open Source Metadata Framework) as well as certain metadata extracted directly from documents (such as the table of contents). It provides various functionality pertaining to this metadata to help browsers, such as sorting the registered documents or searching the metadata for documents which satisfy a set of criteria. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

scrollkeeper

ScrollKeeper is a cataloging system for documentation. It manages documentation metadata (as specified by the Open Source Metadata Framework (OMF)) and provides a simple API to allow help browsers to find, sort, and search the document catalog. It can also communicate with catalog servers on the Net to search for documents which are not on the local system. From Redhat 8.0 RPM http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

scrollz

An advanced ircII-based IRC client ScrollZ is advanced IRC client based on ircII code. It adds features normally found in ircII scripts like Toolz, PhoEniX, GargOyle or Lice. The main difference between these scripts and ScrollZ is the code. Where ircII scripts take a lot of disk and memory space and run slow, ScrollZ only takes a couple of extra kilobytes compared to stock ircII client yet runs faster than any ircII script. This was accomplished by using C code instead of ircII scripting language. This reduces memory and CPU usage and code tends to run way faster. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

scrot

command line screen capture utility scrot (SCReen shOT) is a simple commandline screen capture utility that uses imlib2 to grab and save images. Multiple image formats are supported through imlib2's dynamic saver modules. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

Scrudgeware

Scrudgeware is currently under development. As a GNU/Linux distribution, ScrudgeWare is being designed with several goals in mind. First and foremost is to be built 100% from GPL (or other freely licensed) software. Second, NO BLOAT. Scrudgeware will try to build a simple ("bare bones") system on which the user can add any software they choose. From LWN Distribution List http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCS

Silicon Controlled Switch From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCS

Singapore Computer Society (org., Singapur) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCS

Small Computer System From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCS

SNA Character String (IBM) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCS

Switch Control Software (ForeRunner, ATM) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCS

[systimax] Structured Cabling System (AT&T) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCSA

Signal Computing System Architecture From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCSA

Sun Common SCSI Architecture (Sun) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

scsh

A `scheme' interpreter designed for writing system programs. Scsh has a high-level process notation for doing shell-script like tasks: running programs, establishing pipelines and I/O redirection. Scsh embeds this process notation within a full Scheme implementation. The process notation is realized as a set of macro definitions, and is carefully designed to allow full integration with standard Scheme code. Scsh isn't Scheme-like; it is Scheme. At the scripting level, scsh also has an Awk design, also implemented as a macro that can be embedded inside general Scheme code. Scsh additionally provides the low-level access to the operating system normally associated with C. The current release provides full access to POSIX, plus important non-POSIX extensions, such as complete sockets support. "Complete POSIX" means: fork, exec & wait, sockets, full read, write, open & close, seek & tell, complete file-system access, including stat, chmod/chgrp/chown, symlink, FIFO & directory access, tty & pty support, file locking, pipes, select, file-name pattern-matching, time & date, environment variables, signal handlers, and more. Please be aware that several of the other scheme implementations being distributed as Debian GNU/Linux packages also provide much of the similar system programming functionality. It is wisest to try them all and explore. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCSI

see small computer systems interface (SCSI). From Redhat-9-Glossary http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCSI

Small Computer Systems Interface (SCSI) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCSI disks

SCSI (pronounced scuzzy) stands for Small Computer System Interface. SCSI is a ribbon, a specification, and an electronic protocol for communication between devices and computers. Like your IDE ribbons, SCSI ribbons can connect to their own SCSI hard disks. SCSI ribbons have gone through some versions to make SCSI faster, the latest ``Ultra-Wide'' SCSI ribbons are thin, with a dense array of pins. Unlike your IDE, SCSI can also connect tape drives, scanners, and many other types of peripherals. SCSI theoretically allows multiple computers to share the same device, although I have not seen this implemented in practice. Because many UNIX hardware platforms only support SCSI, it has become an integral part of UNIX operating systems. SCSIs also introduce the concept of LUNs (which stands for Logical Unit Number), Buses, and ID. These are just numbers given to each device in order of the SCSI cards you are using (if more than one), the SCSI cables on those cards, and the SCSI devices on those cables--the SCSI standard was designed to support a great many of these. The kernel assigns each SCSI drive in sequence as it finds them: /dev/sda, /dev/sdb, and so on, so these details are usually irrelevant. An enormous amount should be said on SCSI, but the bare bones is that for 90% of situations, insmod <pci-scsi-driver> is all you are going to need. You can then immediately begin accessing the device through /dev/sd? for disks, /dev/st? for tapes, /dev/scd? for CD-ROMs, or /dev/sg? for scanners. [Scanner user programs will have docs on what devices they access.] SCSIs often also come with their own BIOS that you can enter on startup (like your CMOS). This will enable you to set certain things. In some cases, where your distribution compiles-out certain modules, you may have to load one of sd_mod.o, st.o, sr_mod.o, or sg.o, respectively. The core scsi_mod.o module may also need loading, and /dev/ devices may need to be created. From Rute-Users-Guide http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

scsiadd

Add or remove SCSI devices by rescanning the bus. scsiadd allows you to add or remove SCSI devices without having to restart the computer. This is *NOT* a substitute for powering down to connect or disconnect hardware unless it's specifically designed to be hot swappable. Use it to enable the external SCSI drive you only use occasionally so is powered off when the machine first boots, or to rescan the bus after moving hot-swap drives around. scsiadd will also try to prevent you from doing anything to disrupt drive names that are in use. Similar functionality is available by echoing text to /proc/scsi/scsi From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

scsitools

Collection of tools for SCSI hardware management This package is a collection of tools for manipulating SCSI hardware: scsiinfo: displays SCSI drive low-level information and modifies SCSI drive settings, scsidev: makes permanent SCSI LUN -> devicename connections, scsifmt: low-level SCSI formatter, sraw: benchmarks raw SCSI I/O rates bypassing the buffer cache, scsistop: low-level SCSI drive start/stop program, scsi-spin: program to manually spin up and down a SCSI device. Be aware that these tools require some knowledge of what are they doing to be used properly, not causing damage to your system. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCSL

Sun Community Source License (Sun) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCSU

Standard Compression Scheme for Unicode (Unicode) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCT

Subroutine Call Table From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCTP

Stream Control Transmission Protocol (IETF) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCTS

Secondary Clear to Send From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCU

Selector Control Unit From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCU

System Control Unit (CPU, POWER) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SCX

Specialized Communications eXchange From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

Scyld Beowulf

The Scyld Beowulf Cluster Operating System software distribution is the second generation of Beowulf clustering. The system advances clustering technology, providing significant benefits over existing systems. A 'special purpose/mini' distribution. From LWN Distribution List http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SD

Self-Describing [file] (HP) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SD

Starting Delimiter (FDDI, Token Ring) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SD

Structured Design (CASE) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SD

Super Density [disk] (CD, Toshiba, Time Warner) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDA

Screen Design Aid (IBM, ADT) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDA

Shared Data Architecture From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDA

Software Design Automation From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDA

Source Data Automation From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDA

Swappable Data Area (DOS) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDA

System Display Architecture From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDAV

Systems Design Automation Vendor From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDC

Sample Data Collection From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDC

Secure Digital Card (PDA) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDC

Software Development Control [system] (CMU, CM) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDC

Software Distribution Center From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sdcc

Small Device C Compiler SDCC is a C compiler for the Intel MCS51 family, AVR and Z80 microcontrollers. The package includes the compiler, assemblers and linkers, and a core library. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sdcc-ucsim

Micro-controller simulator for SDCC uCsim is a microcontroller simulator. It is extensible to support different microcontroller families. Currently it supports Intel MCS51 family. Atmel AVR core is working now and Z80 support is under development. This package also include the source debugger for SDCC. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDCCH

Stand-alone Dedicated Control CHannel (GSM, DCCH, mobile-systems) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDCD

Secondary Data Carrier Detect From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDD

Software Design Document From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDD

Super Density Disk (Toshiba, Time Warner, ...) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDDAS

Southwest research Data Display and Analysis System From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDDI

Shielded Distributed Data Interface (FDDI, STP) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDE

Software Development Environment From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDF

Screen Definition Facility From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sdf

Simple Document Parser SDF (Simple Document Format) is a freely available document development system which generates high quality outputs in a variety of formats from a single source. The output formats supported include PostScript(tm), PDF, HTML, plain text, POD, man pages, LaTeX, MIF, SGML, Windows(tm) help, RTF, MIMS F6 help and MIMS HTX help. If the idea of specifying documents in a logical manner via a simple markup language sounds appealing, SDF may be useful to you. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDF

Standard Data Format From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDF

System Dialog Facility (BS2000) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDH

Synchronous Digital Hierarchy (FDDI, ATM) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDI

Single Document Interface From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDI

Slovensko Drustvo Informatika (org., Slowakien) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDI

Source Data Information From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDI

Standard Data Interface From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDI

Standard Disk Interconnect From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDI

Standard Disk Interface From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDI

Standard Drive Interface From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDI

Storage Device Interconnect From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDI

Storage Device Interface (Novell, Netware, SMS) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDI

Super Data Interchange From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sdic

Emacs-Lisp program to view dictionaries Sdic is an emacs interface to English-Japanese dictionaries and Japanese-English dictionaries. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sdic-gene95

GENE95 dictionaries for sdic (installer) This package installs the GENE95 English-Japanese dictionary to use with sdic. Although this package can install a Japanese-English dictionary derived the GENE95 English-Japanese dictionary, I would prefer to use the Japanese-English dictionary installed through sdic-edict. Before installing this package, you have to get gene95.lzh or gene95.tar.gz or gene95.tar.bz2. You can get these files from http://www-nagao.kuee.kyoto-u.ac.jp/member/tsuchiya/sdic/index.html From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDIF

SGML Document Interchange Format (SGML, ISO, IS 9069) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDIF

System Independent Data Format (Novell, SMS) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sdiff

find differences between two files and merge interactively From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDILINE

Selective Dissemination of Information onLINE From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDIMM

Single [RAS] Dual Inline Memory Module (DIMM, RAS), "S-DIMM" From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDIS

Switched Digital Integrated Service From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDK

Software Development Kit (MS) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDL

Simple Direct Media Layer (SDL) is a cross-platform multimedia library designed to provide fast access to the graphics frame buffer and audio device. From Redhat 8.0 RPM http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDL

Specification and Description Language (CCITT) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDL

System Design Language From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sdl-config

script to get information about the installed version of SDL From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDLC

Synchronous Data Link Control (IBM, SNA) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDLGR

Specification and Description Language / Graphical Representation, "SDL/GR" From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDLLC

Synchronous Data Link Control Conversion (SNA, IBM) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDLP

Standard Device Level Protocol From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDM

??? [benchmark] (DB, SPEC) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDM

Short Data Message From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDM

Spatial Data Management From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDMA

Storage Device Migration Aid From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDMI

Secure Digital Music Initiative (org.) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDMS

SCSI Device Management System (BIOS) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDN

Software Defined Network From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDN

Software Distribution Net (FidoNet) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDNS

Secure Data Network Service / System (USA, mil.) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDOC

Selective Dynamic Overload Controls From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDOS

Software Dynamics Operating System (OS) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDP

Service Delivery Point From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDP

Session Description Protocol (RFC 2327) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDP

Software Development Plan From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDP

Specialized Data Point (IN) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDP

Streaming Data Procedure From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sdr

An Mbone Conference Scheduling and Booking System.(SDR) Sdr is a Session Directory designed for announcing and scheduling multimedia conferences on the Mbone - the multicast backbone of the Internet. Sdr is loosely modelled on sd - LBL's Mbone Session Directory. Sdr extends the sd model in a number of ways, particularly in the degree of detail about the timing and resources required by a conference, and in the provision of a much more flexible interface for querying the existence of sessions or of any sessions that may potentially clash with a new session. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDR

Service DiRectory [tool] (SAP) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDR

Shared Data Research From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDR

Signal-to-Distortion Ratio From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDR

Single Data Rate (GDR) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDR

Store Data Register (IC) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDR

Streaming Data Request From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDR

System Design Review From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDRAM

Synchronous Dynamic Random Access Memory (RAM, DRAM, IC, Intel, Samsung) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDRP

Source Demand Routing Protocol From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDRSDRAM

Single Data Rate Synchronous Dynamic Random Access Memory (DRAM, RAM, IC), "SDR-SDRAM" From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDS

SubDivision Surfaces (3D) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDS

Switched Data Service From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDS

Synchronous Data Set From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDS

Sysops Distribution System (BBS) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDSAF

Switched Digital Services Applications Forum (org.) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDSC

San Diego Supercomputer Center (org., USA) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDSC

Synchronous Data Set Controller From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDSCNET

San Diego Supercomputer Center NETwork (network, USA), "SDSCnet" From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDSL

Single line Digital Subscriber Line (DSL) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDSMA

Slotted Digital Sense Multiple Access (MODACOM), "S-DSMA" From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDSN

Secure Data System Network From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDT

Software Development Tools From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDT

Source Data Terminal From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDT

Systems Development Tool From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDTP

[PPP] Serial Data Transport Protocol (PPP, RFC 1963) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDU

Service Data Unit (OSI) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDU

Software Distribution Utilities (IBM, HP) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDV

Switched Digital Video (VOD) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SDX

Storage Data ACceleration (ATAPI, WD, CD, DVD) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SE

Service / Systems Engineer From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SE

Software Engineering From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SE

Standard / Special Edition (IBM, OS/2) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SE

Switching Element From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SE

System Extension From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SEA

Self-Extracting Archive From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SEA

Society for Electronic Access (org.) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SEAC

Standards Eastern Automatic Computer From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

seahorse

A Gnome front end for GnuPG Seahorse is a Gnome front end for GnuPG - the Gnu Privacy Guard program. It is a tool for secure communications and data storage. Data encryption and digital signature creation can easily be performed through a GUI and Key Management operations can easily be carried out through an intuitive interface. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SEAL

Simple and Efficient Adaptation Layer (ATM) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SEAP

Service Element Access Point From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

Search Engine

A (usually web-based) system for searching the information available on the Web. Some search engines work by automatically searching the contents of other systems and creating a database of the results. other search engines contains only material manually approved for inclusion in a database, and some combine the two approaches. From Matisse http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

search path

A list of directories in which a given user's commands may be found. Each time the user enters a command at the keyboard, the shell searches the list to find the command. You can execute only those commands that belong to the directories in your search path. From Linux Guide @FirstLinux http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

searchandrescue

Fly aircraft to Search (for) and Rescue people in distress. Tired of scores indicating things destroyed or lives snuffed? Try something different -- fly a helicopter around and rescue people in distress. If you were in trouble wouldn't you want someone to rescue you? This game is intended for players of all audiences, but especially for mature players who want to get away from the violence and still retain a level of precise challenge. Flight difficulty can be lowered for beginners (regardless of mission type), and graphics minimized to suit slower computers (minimum Pentium 166 with no graphics acceleration). This package has been configured to depend on libjsw for joystick support and libY2 for sound support. However, neither a joystick nor sound support is necessary to enjoy the game. http://wolfpack.twu.net/SearchAndRescue/ From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

searchscripts

search Debian & Usenet archives & Packages files searchgoo searches Google's Usenet archives; similar in function to dejasearch. searchdeb & searchgeo search the Debian & Geocrawler mailing list archives. Geocrawler archives Debian mailing lists and many others. The advantage these have over the web page forms is they download message bodies unattended. ppack parses the Packages, available & status files to show orphans, packages that need updating, those that belong to a chosen maintainer, anomalies in package status, popcon results and more. Useful for keeping track of chroot status. diffdirs shows the files that are different in two directories, tarballs, zip files, debs or any combination of two of these. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SECAM

SEquentiel Couleur Avec Memoire From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SECB

Severely Errored Cell Block (UNI) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SECC

Single Edge Connector Case (CPU) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

secondary storage

A nonvolatile storage medium such as a disk drive that stores program instructions and data even after you switch off the power. Synonymous with auxiliary storage. See primary storage. From QUECID http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

secpanel

A Tcl/Tk GUI for SSH and SCP. SecPanel serves as a graphical user interface for managing and running SSH (Secure Shell) and SCP (Secure Copy) connections. SecPanel is not a new implementation of the Secure Shell protocol or the ssh software-suite. SecPanel sits on top of SSH software-suites and supports the commercial SSH and the OpenBSD's free SSH implementation. You may get information about these programs at http://www.ssh.com and at http://www.openssh.com respectively. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

secpolicy

PAM security policy configuration tool This tool allows you to manipulate the PAM configuration files for each "service" you have created to use PAM. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

secpolicy

Views and sets PAM security policies. From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

Sector

A segment of one of the concentric tracks encoded on a floppy or hard disk during a low-level format. In IBM PC-compatible computing, a sector usually contains 512 bytes of information. See cluster. From QUECID http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sector

The primary measuring unit of a storage disk upon which data is stored. From Redhat-9-Glossary http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

Secure Shell (SSH)

A protocol for secure terminal access to remote computer systems. SSH uses key-based cryptography to securely authenticate and transmit session data from client to host. From Redhat-9-Glossary http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

Securepoint Firewall & VPN Server

The Securepoint Firewall & VPN server is a high end firewall and VPN solution for protecting your Internet gateway. Securepoint can also be used with existing firewalls and to protect interconnected locations or divisions and lets you create and manage VPN tunnels. Languages supported: English, German, Russian, and Korean. A 'secured' distribution. From LWN Distribution List http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

Security Certificate

A chunk of information (often stored as a text file) that is used by the SSL protocol to establish a secure connection. From Matisse http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

security through obscurity

(alt. `security by obscurity') A term applied by hackers to most OS vendors' favorite way of coping with security holes -- namely, ignoring them, documenting neither any known holes nor the underlying security algorithms, trusting that nobody will find out about them and that people who do find out about them won't exploit them. This "strategy" never works for long and occasionally sets the world up for debacles like the RTM worm of 1988 (see Great Worm), but once the brief moments of panic created by such events subside most vendors are all too willing to turn over and go back to sleep. After all, actually fixing the bugs would siphon off the resources needed to implement the next user-interface frill on marketing's wish list -- and besides, if they started fixing security bugs customers might begin to expect it and imagine that their warranties of merchantability gave them some sort of right to a system with fewer holes in it than a shotgunned Swiss cheese, and then where would we be? Historical note: There are conflicting stories about the origin of this term. It has been claimed that it was first used in the Usenet newsgroup in comp.sys.apollo during a campaign to get HP/Apollo to fix security problems in its Unix-clone Aegis/DomainOS (they didn't change a thing). ITS fans, on the other hand, say it was coined years earlier in opposition to the incredibly paranoid Multics people down the hall, for whom security was everything. In the ITS culture it referred to (1) the fact that by the time a tourist figured out how to make trouble he'd generally gotten over the urge to make it, because he felt part of the community; and (2) (self-mockingly) the poor coverage of the documentation and obscurity of many commands. One instance of deliberate security through obscurity is recorded; the command to allow patching the running ITS system (escape escape control-R) echoed as $$^D. If you actually typed alt alt ^D, that set a flag that would prevent patching the system even if you later got it right. From Jargon Dictionary http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

secvpn

Secure Virtual Private Network (secvpn) builds a VPN based on ssh and ppp as described in the Linux VPN HOWTO. (Please look there for further informations) All necessary routing on the secvpn hosts will be done by secvpn. Secvpn will try to reestablish broken connections automatically. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sed

Sed (Stream EDitor) is a stream or batch (non-interactive) editor. Sed takes text as input, performs an operation or set of operations onthe text, and outputs the modified text. The operations that sed performs (substitutions, deletions, insertions, etc.) can be specified in a script file or from the command line. From Redhat 8.0 RPM http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SED

Stream EDitor (Unix) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sed

The GNU sed stream editor. sed reads the specified files or the standard input if no files are specified, makes editing changes according to a list of commands, and writes the results to the standard output. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SEDAS

Standardisiertes Einheitliches DatenAustauschSystem (EDI) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

see

execute programs via entries in the mailcap file From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SEE

Societe des Electriciens et Electroniciens (org., France) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SEE

Software Engineering Environments From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SEE

Systems Equipment Engineering From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

Seek

In a disk drive, to locate a specific region of a disk and to position the read/write head so that the computer can retrieve data or program instructions. From QUECID http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

seek time

In a secondary storage device, the time that it takes the read/write heads reach the correct location on the disk. See access time. From QUECID http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

seesat5

a satellite location program Seesat5 uses the NORAD sgp4 algorithm to compute the location of a satellite. Many different filtering methods are provided by Seesat5 so that only those satellites that might actually be viewed are presented in the report. This report includes bearing and elevation with respect to the observer's location as well as other information of interest to the observer. Although an observer would find no use for it, the program can be made to report the location even when it is below the horizon. For radio satellites like the Oscar series knowing when it comes above the horizon is some of the interesting information this program can provide. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SEF

Source Explicit Forwarding From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SEFS

Severely Errored Framing Seconds (DS1/E1, DS3/E3) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

segmentation fault

An error in which a running program attempts to access memory not allocated to it and core dumps with a segmentation violation error. From Linux Guide @FirstLinux http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

segmentation fault

n. [Unix] 1. [techspeak] An error in which a running program attempts to access memory not allocated to it and core dumps with a segmentation violation error. This is often caused by improper usage of pointers in the source code, dereferencing a null pointer, or (in C) inadvertently using a non-pointer variable as a pointer. The classic example is: int i; scanf ("%d", i); /* should have used &i */ 2. To lose a train of thought or a line of reasoning. Also uttered as an exclamation at the point of befuddlement. From Jargon Dictionary http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SEH

Structured Exception Header From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SEI

Software Engineering Institute From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sel

Fullscreen file-selection and execution tool sel displays a listing of files like a file-manager. You can move around using the arrow-keys and run a command given on the command-line on the selected file with the <RETURN> - key. If you've installed the terminfo- library delivered with ncurses, sel will use colors. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SEL

Software Engineering Laboratory From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SEL

Standard Elektrik Lorenz [ag] (manufacturer) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

select-xface

Insert X-Face mail header with viewing and selecting a bitmap. Insert X-Face Mail/News header with viewing and selecting a bitmap. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

selectwm

Select a window manager at X startup selectwm is a simple but robust program that will let you pick a window manager (or other executable) to run at X startup, and optionally after a window manager exits. It uses the GTK+ toolkit, and includes options like a timer to start the default window manager, and modification of the window manager list from within selectwm. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SELHPC

South East London - High Performance Computing [centre] (org.), "SEL-HPC" From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

selinux

Policy config files and management for NSE Security Enhanced Linux /etc/selinux contains the policy files, checkpolicy will check the policy. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SEM

Server Enhancement Module From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SEM

Standard Error of the Mean From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

semantic

A lexer, parser-generator, and parser written in elisp The Semantic Bovinator's goal is to provide an intermediate API for authors of language agnostic tools who want to deal with languages in a generic way. It also provides a simple way for Mode Authors, who are experts in their language, to provide a parser for those tool authors, without knowing anything about those tools. The Semantic Bovinator is made up of these important pieces: - lexer: Converts a language into a token stream - parser: Converts a token stream into a stream of nonterminals defined by the language. - parser-generator: Converts a language definition into a table usable by the parser. (Written using the Semantic Bovinator) - Language Definitions: Parsers already existing for the parser generator language (Bovine Normal Form), Emacs Lisp, and C. - speedbar browser: Code for browsing a generated nonterminal list with Speedbar. - Documentation generator: Identifies inline documentation in source code, and can convert it to texinfo. It can also create inline documentation. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

semi

Library to provide MIME feature for GNU Emacs. SEMI is a library to provide MIME feature for GNU Emacs. MIME is a proposed internet standard for including content and headers other than (ASCII) plain text in messages. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sendfile

Simple Asynchronous File Transfer Sendfile is an asynchronous file transfer service for the Internet, like the sendfile facility in Bitnet: Any user A can send files to another user B without B being active in any way. The existing standard file transfer (ftp) is a synchronous service: The user must have access to an account on the sending and on the receiving site, too. Sendfile for Unix, which is an implementation of the SAFT protocol (Simple Asynchronous File Transfer) now offers you a true asynchronous file transfer service for the Internet. Virtually any form of file can be sent, including encrypted ones. The SAFT protocol will be submitted as an RFC in the near future. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sendip

A commandline tool to allow sending arbitrary IP packets. SendIP has a large number of command line options to specify the content of every header of a RIP, TCP, UDP, ICMP or raw IPv4 and IPv6 packet. It also allows any data to be added to the packet. Checksums can be calculated automatically, but if you wish to send out wrong checksums, that is supported too. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sendmail

A powerful, efficient, and scalable Mail Transport Agent. Sendmail is an alternative Mail Transport Agent (MTA) for Debian. It is suitable for handling sophisticated mail configurations, although this means that its configuration can also be complex. Fortunately, easy thing can be done easily, and complex things are possible, even if not easily understood ;) Sendmail is the *ONLY* MTA with a Turing complete language under the covers ! Sendmail provides Security and SPAM/UCE/UBE protection via several means: - STARTTLS(SSL) RFC2487 encryption for mail reception/delivery. - STARTTLS(SSL) authentication (certificate based) for access/relay control. - SMTP AUTH (SASL/PAM) authentication for access/relay control. - ACCESS database (by IP/host) for access/relay control. - Use of varied Realtime Blackhole Lists (RBL) to prevent access. - Integration of LOGCHECK rules to fine-tune logging. - Inboard POSIX Regular Expression processing of *all* headers. - Ability (via MILTER) to scan/change headers *and* body of *ALL* mail A site may utilize zero, one, or more MILTERs. - Reduced SUID exposures by running SGID smmsp/mail where possible. Sendmail provides Performance and Scalability by: - Allowing multiple queues, with the ability to tune both interval and queue runners on a queue by queue basis. - Providing (a Debian exclusive) an easy to configure means of queue-aging to improve throughput by not continually retrying failed deliveries. - Allowing most all maps/databases to be obtained via LDAP; reducing the number of used databases and simplifying the maintenance of Sendmail. - Reducing the file I/O where possible by buffering files in memory. Sendmail provides site enhanced site configuration/customization by: - Allowing the listener (usually port 25) to run as a daemon or via INETD. - Allowing the queue runner (mail delivery) to run as a daemon or via CRON. - Automagically updating configuration and databases on upgrades. - Providing a Turing complete language for site customization of mail handling. - Providing a means (MILTER) for a site to scan/change all email - both incoming and outgoing. A site can write their own MILTER, or may use any of those found on internet. To write your own MILTER, you'll need to install the optional milter-dev package. - Providing extensive documentation via the sendmail-doc (optional) package. - Providing an inboard Mail Delivery Agent (MDA) (mail.local), but supporting procmail, mailagent, maildrop, or deliver automatically if installed. Sendmail will also deliver to anythings else (cyrus, etc) if asked to. Sendmail includes *no* Mail User Agents (MUA), you'll have to pick from the plethora of available MUAs (pine, mutt, vm, etc.) This package supports REGEX, DB, NIS, NIS+, LDAP, DNS, HESIOD maps, and has enabled TCPWrappers, IPv6, LockFile, SMTP AUTH(SASL), STARTTLS(SSL). From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sendmail

Sendmail is a popular e-mail server package. By most estimates, well over half of all e-mail flowing through the Internet goes through a Sendmail system. Sendmail is open-source software. Key point: Sendmail is an MTA (Message Transfer Agent). This means that Sendmail only transfers e-mail to other MTAs. Client programs (like Outlook, Eudora, Pine) will use SMTP to hand e-mail to Sendmail for transmission over the Internet, but they can't use SMTP to read e-mail. Instead, when Sendmail receives e-mail destined for the local machine, it must hand it off to some other software package. In the most common situation, Sendmail will save incoming messages in mbox format to /var/spool/mail for each user, and other programs will allow users to retrieve e-mail from those files. History: In 1989, Morris Worm exploited Sendmail bugs as one technique to spread itself. Sendmail is an ancient software package on the Internet, which results in a high-degree of complexity for backwards compatibility. From Hacking-Lexicon http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sendmail

Sendmail sends a message to one or more recipients, routing the message over whatever networks are necessary. Sendmail does inter-network forwarding as necessary to deliver the message to the correct place. Sendmail is not intended as a user interface routine; other programs provide user-friendly front ends; sendmail is used only to deliver pre-formatted messages. From Linux Guide @FirstLinux http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sendmail

The Sendmail program is a very widely used Mail Transport Agent (MTA). MTAs send mail from one machine to another. Sendmail is not a client program, which you use to read your email. Sendmail is a behind-the-scenes program which actually moves your email over networks or the Internet to where you want it to go. If you ever need to reconfigure Sendmail, you will also need to have the sendmail.cf package installed. If you need documentation on Sendmail, you can install the sendmail-doc package. From Redhat 8.0 RPM http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sendpage

An easy-to-use Unix tool for sending pages. Sendpage is a front end to the PET protocol used by many paging systems. PET is also knows as IXO or TAP. It can dial up your paging service and send alphanumeric pages. Other software (such as mon) can be set up to automatically send pages, email can be forwarded to your pager, etc. Sendpage is licensed under the GPL. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sensible-editor

sensible editing and paging From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sensible-pager

sensible editing and paging From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sensor-sweep-applet

GNOME applet displaying system's health status Sensor Sweep is a GNOME panel applet that monitors your computers sensors through the lm_sensors kernel modules. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sensord

Hardware sensor information logging daemon Lm-sensors is a hardware health monitoring package for Linux. It allows you to access information from temperature, voltage, and fan speed sensors. It works with most newer systems. This package contains a daemon that logs hardware health status to the system log with optional warnings on potential system problems. You will need lm-sensors and i2c kernel modules to use this package. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

Sentry Firewall

Sentry Firewall CD-ROM is a Linux based bootable CD-ROM suitable for use as an inexpensive and easy to maintain Firewall or IDS (Intrusion Detection System) Node. The system is designed to be immediately configurable for a variety of different operating environments via a configuration file located on a floppy disk or a local hard drive. Version 1.2.0 was released March 27, 2002. Version 1.4.0-beta2 was released October 25, 2002. A CD-based distribution. From LWN Distribution List http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SEP

Someone Else's Problem (slang, Usenet, IRC) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SEPP

Secure Electronic Payment Protocol (banking, IBM, Netscape, GTE) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

seq

prints a sequence of numbers From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SEQUEL

Structured English QUEry Language (IBM, DB, SQL, predecessor) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

ser2net

Allows network connections to serial ports This daemon allows telnet and tcp sessions to be established with a unit's serial ports. Combined with a terminal emulation like xterm or the Linux console, this can be a very simple means of communicating with routers, other systems' serial consoles and other equipment with a serial port. This is remarkably similar to some Cisco router's reverse telnet function. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

serial installation

An installation of Red Hat Linux done via serial communication port. From Redhat-9-Glossary http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

serial line internet protocol (SLIP)

A network connection standard that uses the Internet Protocol (TCP/IP) over a serial line. SLIP makes it possible for a computer to communicate with other computers via a dial-up connection. From Redhat-9-Glossary http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

serial mouse

A pointing device that connects to a serial port. From Redhat-9-Glossary http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

serial port

9-pin or 25-pin socket used to connect several devices, including mice and modems. From Redhat-9-Glossary http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

series

The series package is a general iteration library for Lisps. It can do anything loop can, but in a more functional way. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

Serif

Little hooks on the ends of characters. For example, the letter i in a font such as Times Roman has serifs protruding from the base of the i and the head of the i. Serif fonts are usually considered more readable than fonts without serifs. There are many different types of serif fonts. From Linux Guide @FirstLinux http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SERM

Structured Entity Relationship Model (DB, ERM) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

serpento

dict server with full unicode support serpento is a dict server written in python. If you want to run the server, you need also dictionary files. You can use those provided as debian packages (dict, dict-gcide, dict-wn, dict-jargon, dict-foldoc etc.) See /usr/share/doc/serpento/README.debian for info. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SERT

Security Emergency Response Team (org., Australia, Internet) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

server

A computer system that manages files, services, and access to resources on a network. From Redhat-9-Glossary http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

Server

A computer, or a software package, that provides a specific kind of service to client software running on other computers. The term can refer to a particular piece of software, such as a WWW server, or to the machine on which the software is running, e.g. "Our mail server is down today, that's why e-mail isn't getting out." A single server machine can (and often does) have several different server software packages running on it, thus providing many different servers to clients on the network. Sometimes server software is designed so that additional capabilities can be added to the main program by adding small programs known as servlets. From Matisse http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

server

A program which provides some service to other (client) programs. The connection between client and server is normally by means of message passing, often over a network, and uses some protocol to encode the client's requests and the server's responses. From Linux Guide @FirstLinux http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

server

n. A kind of daemon that performs a service for the requester and which often runs on a computer other than the one on which the requestor/client runs. A particularly common term on the Internet, which is rife with `web servers', `name servers', `domain servers', `news servers', `finger servers', and the like. From Jargon Dictionary http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

server message block (SMB)

A protocol developed to facilitate the sharing of files, printers, and other resources on a local network. Samba is a Linux-compatible implementation of the SMB protocol. From Redhat-9-Glossary http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

Server optimized Linux

SoL (Server optimized Linux) is a Linux distribution completely independent from other Linux distributions. It was built by antitachyon from the original source packages and is optimized for heavy-duty server work. It contains all common server applications, and features XML boot and script technology that makes it easy to configure and make the server work. SoL 13.37 was released April 22, 2002 (initial Freshmeat announcement). Version 16.00 was released March 17, 2003. A diskless version, SoL-diag 1.1, was introduced March 3, 2003. A desktop version, SoL-Desktop 0.2, was released March 27, 2003. From LWN Distribution List http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

Serverdisk diskette distro

Serverdisk diskette distro is a Linux floppy disk distribution which includes FTP and HTTP servers. Just a small server, not intended to be a rescue disk or standalone firewall. The initial version, 0.1, was released September 19, 2002. A floppy-based distribution. From LWN Distribution List http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

Servlet

A small computer program designed to be add capabilities to a larger piece of server software. Common examples are "Java servlets", which are small programs written in the Java language and which are added to a web server. Typically a web server that uses Java servlets will have many of them, each one designed to handle a very specific situation, for example one servlet will handle adding items to a "shopping cart", while a different servlet will handle deleting items from the "shopping cart." From Matisse http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SES

Security Enabling Services (IBM) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SES

Severely Errored Seconds (DS1/E1) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SESAM

Synergetische Erkennung mittels Standbild, Akustik und Motorik (IIS) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

Session

A complete interaction period between the user and the operating system, from login to logoff. From I-gloss http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

session

One complete interaction between a user and the Linux system, from login to logout. From Linux Guide @FirstLinux http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sessreg

manage utmp/wtmp entries for non-init clients From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SET

Secure Electronic Transactions (IBM, Visa, MS, IBM, Mastercard, Netscape, banking) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SET

Software Engineering Technology From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SET

Standard d'Echange et de Transfert (AFNOR, France) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

set6x86

Cyrix/IBM 5x86/6x86 CPU configuration tool Allows one to modify the internal configuration registers in the 5x86 and 6x86 CPU. These include specifying non-cacheable memory areas (important for e.g. graphics cards), I/O delays, cache write policy (WB/WT), write-gathering, and also enable an automatic standby mode where a CPU "halt" instruction cuts down power by a factor of 70 (from 20 Watts to 0.3 Watts for the 6x86 P133+) when the CPU is idle. Especially the CPU power reduction cuts down on most temperature-related problems on many motherboards. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SETA

Systems Engineering and Technical Assistance From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

setcd

Control the behaviour of your cdrom device This program allows you to control the behaviour of your Linux cdrom player. You'll need a cdrom device that complies to the new interface defined in linux/Documentation/cdrom/cdrom-standard.tex. For kernel 2.0 this is only the cm206 drive, for kernel 2.1 this includes IDE and SCSI drives. You can control: auto close, auto eject, medium type checking and tray locking. You can get information on the volume name of cdroms and other data, and you can set the speed of your drive and choose a disc from a jukebox. In order to fully exploit the possibilities, you'll need libc6 and a recent version of the the linux kernel, but you will get decent error behaviour in return. Expect a message "No medium found" if you attempt to mount an empty drive or "Wrong medium type" if you try to mount an audio disc, instead of a whole load of kernel error messages. The source of this package may be an example for cdrom player program developers that wish to exploit the features of the new cdrom interface. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

setfdprm

sets user-provided floppy disk parameters TQ From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

setiathome

SETI@Home Client (install package) SETI@home is a scientific experiment that harnesses the power of hundreds of thousands of Internet-connected computers in the Search for Extraterrestrial Intelligence (SETI). You can participate by running a free program that downloads and analyzes radio telescope data. There's a small but captivating possibility that your computer will detect the faint murmur of a civilization beyond Earth. SETI@Home is only distributed in binary form and the correct unix tar ball for your architecture has to be downloaded from http://setiathome.ssl.berkeley.edu/unix.html and placed in $TMPDIR (or /tmp if $TMPDIR is not defined). This installer package will automagically wget (if wget is installed) the right tarball and install the program, if the target debian linux architecture is one of the following: x86, alpha, sparc, powerpc or hppa. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

setkeycodes

load kernel scancode-to-keycode mapping table entries From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SETL

SEt Theory Language (New York Uni.), "SetL" From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

setleds

set the keyboard leds From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

setmetamode

define the keyboard meta key handling From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

setmixer

a command mode mixer. Got bored resetting soundcard manually after every reboot? Here is a small utility which can help you to avoid that. The whole source is setmixer.c. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SETP

Secure Electronic Transactions Process From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SETP

Stream Environment Transport Protocol From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

setpci

configure PCI devices From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

setserial

Controls configuration of serial ports. Set and/or report the configuration information associated with a serial port. This information includes what I/O port and which IRQ a particular serial port is using. This version has a completely new approach to configuration, so if you have a setup other than the standard ttyS0 and 1, you will have to get your hands dirty. By default, only COM1-4 are configured by the kernel, using IRQ 3 and 4. If you have other serial ports (such as an AST Fourport card), or if you have mapped the IRQs differently (perhaps COM3 and 4 to other IRQs to allow concurrent access with COM1 and 2) then you must have this package. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

setserial

get/set Linux serial port information From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

setsid

creates a session and sets the process group ID From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

setsid

run a program in a new session From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

setterm

set terminal attributes From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

setuid

sets the effective user ID of the current process. If the effective userid of the caller is root, the real and saved user ID's are also set. From Linux Guide @FirstLinux http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

setuid (SUID)

UNIX programs that can be run by a user, but which have root privileges. Key point: In theory, setuid programs can only be installed by root, and they are considered as part of the operating system, because they inherently bypass security checks and must verify security themselves. A typical example is the passwd command, which a user runs in order to change his/her password. It must be setuid, because it changes files only root has access to, but yet it must be runnable by users. Key point: In practice, setuid programs often have bugs that can be exploited by logged in users. Key point: As part of hardening a system, the administrator should scour the system and remove all unnecessary setuid programs. Linux find / -type f -perm +6000 -exec ls -l {} \; Solaris find / -type f \( -perm -4000 -o -perm -2000 \) -exec ls -l {} \; In order to remove the suid bit, you can use the command chmod -s filename. Removing the suid bit will disable a lot of programs. Two programs that really need to have this bit turned on are /usr/bin/passwd, which users run to change their passwords, and /bin/su, which elevates a normal user to super user (when given the correct password). Key point: Some programs are really setguid which only changes the group context rather than the user context. Key point: Windows doesn't have the concept of setuid. Instead, RPC is used whereby client programs (run by users) contact server programs to carry out the desired task. For example, in order to change the password, the client program asks the SAM to do it on behalf of the user. Thus, whereas UNIX requires a myriad of client programs to verify credentials and be written securely, Windows only requires a few server programs to do the same. Key point: A common way to backdoor a system is to place a SUID program in the /tmp directory. From Hacking-Lexicon http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

setuptool

Setuptool is a user-friendly text mode menu utility which allows youto access all of the text mode configuration programs included in the Red Hat Linux operating system. From Redhat 8.0 RPM http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

setxkbmap

set the keyboard using the X Keyboard Extension From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SEU

Software-Entwicklungs-Umgebung (CASE) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SEU

Source Entry Utility (IBM, ADT) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sex

Simple editor for X The Simple editor for X (SeX) is a relatively small, simple, not too slow editor for X. It has no text mode user interface. It doesn't have very many features. The primary attraction is the mouse language, which is almost identical to xterm's, but clicking the middle mouse button inside a selection cuts it instead of pasting it. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

seyon

Full-featured native X11 communications program. Seyon is a complete full-featured modem communications package for the X Window System. Some of its features are: - dialing directory - terminal emulation (DEC VT02, Tektronix 4014 and ANSI) - script language - Zmodem From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SF

Service Feature (IN) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SF

Sign Flag (assembler) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SF

Standard Form From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SF

Switching Fabric From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SFBI

Shared Frame Buffer Interconnect From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sfconvert

convert between various audio formats From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SFD

Simple Formattable Document (CCITT, MHS, X.420) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SFD

Start Frame Delimiter (ethernet) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SFD

Symbolic File Directory From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sfdisk

Partition table manipulator for Linux From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SFF

Small Form Factor [committee] (org.) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sfftw2

Library for computing Fast Fourier Transforms This library computes Fast Fourier Transforms (FFT) in one or more dimensions. It is extremely fast. This package contains the shared library version of the fftw libraries in single precision. To get the static library and the header files you need to install sfftw-dev. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sfinfo

display information about audio files From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sfio

Sfio is a library for managing I/O streams. It provides functionality similar to that of Stdio, the ANSI C Standard I/O library, but via a distinct interface that is more powerful, robust and efficient. From Mandrake 9.0 RPM http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sfio1999

Enhanced library for managing I/O streams. Sfio is a portable library for managing I/O streams. It provides similar functionality to the ANSI C Standard I/O functions known collectively as Stdio. However, it has a distinct interface and is generally faster and more robust than most Stdio implementations. Sfio also introduces a number of new features and concepts beyond Stdio stream I/O processing. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sfio2000

Enhanced library for managing I/O streams. Sfio is a portable library for managing I/O streams. It provides similar functionality to the ANSI C Standard I/O functions known collectively as Stdio. However, it has a distinct interface and is generally faster and more robust than most Stdio implementations. Sfio also introduces a number of new features and concepts beyond Stdio stream I/O processing. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SFMJI

Sorry For My Jumping In (slang, Usenet, IRC) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sformat

SCSI disk format and repair tool Sformat will let you low-level format and repair bad blocks on SCSI disks. It can help you get data off a failing disk and often resurrect an apparently-broken drive. Users of SunOS will recognise the features from Sun's format command. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SFP

System File Protection (MS, WIndows) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SFPRNSB

Select a File for Processing and Read Next Spool Buffer (IBM, VM/ESA, CP) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SFPS

Secure Fast Packet Switching (Cabletron) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SFQL

Structured Full-text Query Language From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sfront

MPEG 4 Structured Audio files decoder. Sfront compiles MPEG 4 Structured Audio (MP4-SA) bitstreams into efficient C programs that generate audio when executed. It supports real-time, low-latency audio input/output and MIDI input from soundcards. MP4-SA is a standard for normative algorithmic sound, that combines an audio signal processing language (SAOL) with score languages (SASL, and the legacy MIDI File Format). From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sfs

Self-Certifying File System common files SFS is a secure, global file system with completely decentralized control. It takes NFS shares exported from localhost and transports them securely to other hosts; NFS services do not need to be exposed to network. SFS features key management and authorization separated from filesystem with key revocation separated from key distribution. SFS requires solid NFSv3 support; Linux kernel version 2.2.18, 2.4.0 or greater is required (earlier versions need patching). SFS home page is at http://www.fs.net From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SFS

Shared File System (IBM. CMS, VM/ESA) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SFS

Stepless Frequency Selection From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SFS

Suomen Standardisoimisliitto [Standards Association of Finland] (org., Finland) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SFT

System Fault Tolerance (Novell) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SFT

System File Table (DOS) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SFTP

Screened Foiled Twisted Pair [cable] (UTP, TP) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sftp

Secure file transfer program From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SFTP

Simple File Transfer Protocol (RFC 913) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SFUG

Security Features User's Guide From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sg

Execute command as different group ID From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SG

Signal Ground (MODEM) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sg-utils

Utilities for working with generic SCSI devices. This package includes a number of utilities to manipulate the linux "sg" (version 2) device driver, and to a lesser extent, the version 1 driver found in the 2.0.x kernels. The version 2 driver is only found in 2.2.x linux kernels; if you are using 2.4, please install the sg3-utils package instead. The package includes: * isosize - gives the number of bytes in an iso9660 filesystem * scsi_inquiry - same as sg_inq, only uses SCSI_IOCTL_SEND_COMMAND * sg_dd - a variant of 'dd' that works with the sg interface * sg_debug - prints debug info for all open sg file descriptors * sg_inq - a utility for poking around with the SCSI INQUIRY command * sg_map - shows the mapping between SCSI devices and sg devices * sg_rbuf - tests SCSI bus speed * sg_readcap - prints the output of a READ CAPACITY command * sg_runt_ex - an example program to test the sg driver version * sg_scan - displays the SCSI bus on stdout * sg_start - spins up (or down) disks * sg_test_rwbuf - tests the SCSI host adapter * sg_turs - execute a TEST UNIT READY command on the given device * sg_whoami - displays information about the given sg device * sginfo - a re-porting of the 'scsiinfo' program to use sg devices * sgp_dd - like sg_dd, only multithreaded It also includes sg_simple1 and sg_simple2, which demonstrate calls to the SCSI INQUIRY and TEST UNIT READY commands. They only differ in their error processing: sg_simple1 uses sg_err.[hc] for error processing while sg_simple2 does its own more primitive checks. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SGA

Shared Global Array (DEC, VMS) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sgb

The Stanford GraphBase: combinatorial data and algorithms. A highly portable collection of programs and data for researchers who study combinatorial algorithms and data structures. The programs are intended to be interesting in themselves as examples of literate programming. Thus, the Stanford GraphBase can also be regarded as a collection of approximately 30 essays for programmers to enjoy reading, whether or not they are doing algorithmic research. The programs are written in CWEB, a combination of TeX and C that is easy to use by anyone who knows those languages and easy to read by anyone familiar with the rudiments of C. This package contains only the libraries and the demonstration programs; for the readable source code, which forms the documentation as well, see the sgb-doc package. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SGC

SCSI Graphic Commands (SAM) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SGI

Silicon Graphics Incorporated (manufacturer, SGI) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SGID

Set Group ID: a file attribute which allows a program to run with specific group privileges no matter who executes it. From Linux Guide @FirstLinux http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SGID (set group ID)

The SGID permission causes a script to run with its group set to the group of the script, rather than the group of the user who started it. It is normally considered extremely bad practice to run a program in this way as it can pose many security problems. Later versions of the Linux kernel will even prohibit the running of shell scripts that have this attribute set. http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SGM

SeGmentation Message From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SGML

Standard Generalized Markup Language (ISO 8879, JTC1, RFC 1874, SGML) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sgml

The ISO standardization organization has normalized a set of characters symbolic names ("character entities") used by SGML documents of many types. There are character entities for latin languages, math symbols, greek, cyrillic, etc. This package also includes very basic utilities to allow SGML catalogs manipulation. From Mandrake 9.0 RPM http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sgml-data

common SGML DTDs and entities This package includes Document Type Definitions for HTML Level 0, 1, 2, 3, 3.2, and 4.0, DTDs representing the capabilities for popular browsers, SGML and XML declarations, and popular XML DTDs. Also included are ISO standard entities (SGML and XML), HTML standard entities, and other generally useful sets of entities. Access to these data files is facilitated by the inclusion of an SGML catalog file which defines a default SGML declaration and a default DTD for documents whose DOCTYPE is 'html', and which links system identifiers to public identifiers for other SGML DTDs and entity sets. No setup is required by the user, due to the Debian SGML/XML common layer (see the sgml-base package) From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sgml2html

create HTML output from a LinuxDoc DTD SGML source file From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sgml2info

create GNU info output from a LinuxDoc DTD SGML source file From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sgml2latex

create LaTeX, DVI, PostScript or PDF output from a LinuxDoc DTD SGML source file From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sgml2lyx

create LyX output from a LinuxDoc DTD SGML source file From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sgml2rtf

create RTF output from a LinuxDoc DTD SGML source file From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sgml2txt

create plain text output from a LinuxDoc DTD SGML source file From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sgml2x

Generic formatter for SGML documents using DSSSL stylesheets sgml2x allows to easily format a SGML document using DSSSL stylesheets, and provides the following features: * Multiple possible stylesheets per document class * Easy integration of new stylesheets by adding a simple new definition file in a configuration directory * The caller can specify a PATH-like list of configuration directories, defaulting to a system-wide, a per-user, and a per-project configuration directories * Automatic selection of a default stylesheet to be used From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sgml2xml

convert SGML to XML From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SGMLB

Standard Generalized Markup Language - Binary version (SGML), "SGML-B" From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sgmlcheck

check the syntax of an LinuxDoc DTD sgml source file From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sgmldiff

Find differences in the markup of two SGML files From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sgmlnorm

normalize SGML documents From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sgmlpre

handle SGML conditionalization for SGML-tools From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sgmlsasp

translate output of sgmls using ASP replacement files From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sgmlspl

a simple post-processor for nsgmls From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sgmlspl

SGMLS-based example Perl script for processing SGML parser output This is an example of a Perl script to post-process SGML parser output using the SGMLS Perl modules. To make sensible use of this package you will need to install a suitable SGML parser as well. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sgmltexi

SGML typesetting system able to create Texinfo documents. Sgmltexi is a DTD with tools to get Texinfo. The idea is to have another way to write Texinfo documents, intended to be a little bit easier. Sgmltexi manages Texinfo nodes automatically, generating an Info menu at the Top node, and other menus if required. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sgmltools

process sgml files. From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sgmltools-2

Replaced by sgmltools-lite (dummy package for upgrade) sgmltools-2 is now obsoleted and replaced by sgmltools-lite. This is dummy package for automatic migration. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sgmltools-lite

convert DocBook SGML source into HTML using DSSSL A text-formatting package based on SGML (Standard Generalized Markup Language), which allows you to produce TeX/DVI/PS/PDF, HTML, RTF, and plain ASCII (currently via w3m by default) from a single source with other recommended and suggested packages; due to the flexible nature of SGML, many other target formats are possible. This tool can not handle DocBook XML yet. For DocBook SGML only. HTML can be generated without any other Debian text processing package, but for the other formats the appropriate packages have to be installed. You need to install lynx or w3m for ASCII text output (w3m is the default txt backend). Also jadetex is required for PS and PDF, and linuxdoc-tools for ld2db conversion. This system is tailored for writing technical software documentation, an example of which are the Linux HOWTO documents. However, there is nothing Linux-specific about this package; it can be used for many other types of documentation on many other systems. It should be useful for all kinds of printed and online documentation. The package was formerly called linuxdoc-sgml because it originates from the Linux Documentation Project (LDP). The name has been changed into sgmltools to make it clearer that there is no Linux-specific stuff included in this package. This is the latest version of the sgmltools series and the successor of sgmltools v2. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sgmlwhich

outputs system SGML catalog path From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SGMP

Simple Gateway Monitoring Protocol (RFC 1028) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SGRAM

Synchronous Graphics Random Access Memory (DRAM, RAM) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sgrep

a tool to search a file for structured pattern Sgrep (structured grep) is a tool for searching text files and filtering text streams for structured criteria. Sgrep implements a query language based on so called region expressions. Like grep, sgrep can be used for any kind of text files. However it is most useful for text files containing some kind of structured text. A file containing structured text could be defined as a file, which obeys some syntax. Examples of structured text files are SGML, HTML, C, Tex and mail files. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SGSN

Serving GPRS Support Node (GPRS, mobile-systems) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SGT

Surrounding Gate Transistor (IC) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SGTSI

Semi-Graphical Tree Structure Interface From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sh

GNU Bourne-Again SHell From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sh-utils

The GNU shell utilities are a set of useful system utilities that are often used in shell scripts. The sh-utils package includes basename (to remove the path prefix from a specified pathname), chroot (to change the root directory), date (to print/set the system time anddate), dirname (to remove the last level or the filename from a givenpath), echo (to print a line of text), env (to display/modify theenvironment), expr (to evaluate expressions), factor (to print primefactors), false (to return an unsuccessful exit status), groups (toprint the groups a specified user is a member of), id (to print the real/effective uid/gid), logname (to print the current login name),nice (to modify a scheduling priority), nohup (to allow a command to continue running after logging out), pathchk (to check a file name's portability), printenv (to print environment variables), printf (to format and print data), pwd (to print the current directory), seq (to print numeric sequences), sleep (to suspend execution for a specified time), stty (to print/change terminal settings), su (to become another user or the superuser), tee (to send output to multiple files), test(to evaluate an expression), true (to return a successful exit status), tty (to print the terminal name), uname (to print system information), users (to print current users' names), who (to print a list of the users who are currently logged in), whoami (to print the effective user id), and yes (to print a string indefinitely). From Redhat 8.0 RPM http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SHA

Secure Hash Algorithm (cryptography, NIST) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SHA

Super High Aperture [LCD] (LCD) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SHA-1 (United States Government Secure Hash Algorithm, FIPS 180-1, ANSI 9.30-2, ISO/IEC 10118-3)

SHA-1 is a popular hash algorithm. It converts an input file or message into a "unique" 160-bit fingerprint. This fingerprint is believed to be "unique"; while it is theoretically possible that two inputs could hash to the same fingerprint, it is nearly statistically impossible. Contrast: SHA-1 is currently (year 2001) considered to be the strongest hash function available. It has a larger size (160-bits vs. 128-bits) and has underground thorough scrutiny without discovery of weaknesses (such as MD5). On the other hand, it is one of the slower hash algorithms. History: SHA-1 is a slight variation of SHA. It adds a one-bit shift at one stage in order to overcome a theoretical weakness. SHA was based upon MD4, enhanced to overcome known weaknesses and increase the length to 160-bits. See also: integrity From Hacking-Lexicon http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

shadow-utils

The shadow-utils package includes the necessary programs for converting UNIX password files to the shadow password format, plus programs for managing user and group accounts. The pwconv command converts passwords to the shadow password format. The pwunconv command unconverts shadow passwords and generates an npasswd file (a standard UNIX password file). The pwck command checks the integrity of password and shadow files. The lastlog command prints out the last login times for all users. The useradd, userdel and usermod commands are used for managing user accounts. The groupadd, groupdel andgroupmod commands are used for managing group accounts. From Mandrake 9.0 RPM http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

shadowconfig

toggle shadow passwords on and off From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

shadowed passwords (/etc/shadow)

UNIX was designed around the concept of making the encrypted form of passwords readable by everyone. These passwords were stored in the /etc/passwd file, along with the full account information. It was thought to be secure because the passwords were stored in an encrypted format within this file. However, this is not secure in practice because users tend to choose easily guessable passwords. A program called crack was developed that would guess dictionary words (/usr/dict) and then attempt to brute force the passwords. On an average UNIX system, 90% of all passwords could be cracked with a few days worth of computing time. In order to solve this problem, a "shadow" password file was developed. The encrypted passwords are removed from the normal /etc/passwd and placed in a special file (usually /etc/shadow) that is only readable by root. The remaining account information is left in the original password file for backwards compatibility. Example: The following is a table of typical locations for the shadowed passwords: AIX 3 /etc/security/passwd or /tcb/auth/files// A/UX 3.0s /tcb/files/auth/?/ BSD4.3-Reno /etc/master.passwd ConvexOS 10 /etc/shadpw ConvexOS 11 /etc/shadow DG/UX /etc/tcb/aa/user/ EP/IX /etc/shadow HP-UX /.secure/etc/passwd IRIX 5 /etc/shadow Linux /etc/shadow OSF/1 /etc/passwd[.dir|.pag] SCO Unix #.2.x /tcb/auth/files// SunOS4.1+c2 /etc/security/passwd.adjunct SunOS 5.0 /etc/shadow System V Release 4.0 /etc/shadow System V Release 4.2 /etc/security/* database Ultrix 4 /etc/auth.dir or /etc/auth.pag UNICOS /etc/udb Key point: In the old days, most remote attacks against UNIX were directed at the /etc/passwd file. For example, the most common form of the phf would be to grab the password file. As password shadowing becomes more common, such attacks are increasingly being pointed at the shadow password file instead. From Hacking-Lexicon http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

shapecfg

The Shapecfg program configures and adjusts traffic shaper bandwidth limiters. Traffic shaping is setting parameters or limits on bandwidth consumption, to which network traffic should conform. To use Shapecfg,you must have also installed the kernel which supports the shaper module (kernel versions 2.0.36 or later and late 2.1.x kernels). From Redhat 8.0 RPM http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

shaper

Traffic Shaper for Linux The traffic shaper for Linux configures and adjusts traffic shaper bandwidth limiters. Traffic shaping means setting parameters or limits to which network traffic should conform - that is, setting limitations on bandwidth consumption. See README.shaper for more details. An init script which sets up traffic shaping using class-based queueing is also provided. This can be used to build smart bandwidth shapers which know about TCP/IP. See README.cbq for more details. The kernel support needed to use either of these facilities is described in README.Debian. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

shaperd

A user-mode traffic shaper for tcp-ip networks. Shaperd is a user-mode program that can shape traffic passing through a Linux box. As it runs as a normal daemon, some kind of packet-forwarding mechanism is needed. This can be done with the BSD divert sockets patch for Linux 2.2, or with netfilter's built-in libipq under Linux 2.4. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

shapetools

Configuration and Release management using AtFS. ShapeTools is a collection of programs to support software configuration management in an UNIX environment. It consists of a set of version and attribute control commands, and a configuration interpreter and build tool ("shape"). The toolkit is integrated on top of the Attributed File System (AtFS). ShapeTools is designed to live meaningfully together with any other UNIX tool operating on regular files. This distribution also contains a prototype for a comprehensive change control and release management system designed to manage the evolution of system releases in multi programmer software development efforts. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

shar

create shell archives From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sharchive

/shar'ki:v/ n. [Unix and Usenet; from /bin/sh archive] A flattened representation of a set of one or more files, with the unique property that it can be unflattened (the original files restored) by feeding it through a standard Unix shell; thus, a sharchive can be distributed to anyone running Unix, and no special unpacking software is required. Sharchives are also intriguing in that they are typically created by shell scripts; the script that produces sharchives is thus a script which produces self-unpacking scripts, which may themselves contain scripts. (The downsides of sharchives are that they are an ideal venue for Trojan horse attacks and that, for recipients not running Unix, no simple un-sharchiving program is possible; sharchives can and do make use of arbitrarily-powerful shell features.) Sharchives are also commonly referred to as `shar files' after the name of the most common program for generating them. From Jargon Dictionary http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

shared library

A library where the linker leaves a note in the output that says "when this is run, it will first have to load this library". Shared libraries tend to make for smaller executables than static library. On Linux they have names like libname.so.x.y.z From Linux Guide @FirstLinux http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

shared media

Networks like Ethernet whereby multiple computers connect to the same wire. Key point: In such systems, any computer on the wire can eavesdrop on its neighbors. Contrast: Most corporations are replacing their shared media nets with switched connections. From Hacking-Lexicon http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

shared memory

memory which can be access by more than one process in a multitasking operating system with memory protection From Linux Guide @FirstLinux http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

Shared memory pixmaps

They are 2 dimensional arrays of pixels in a format specified by the X server, where the pixmap data is stored in the shared memory segment. See MIT-SHM. From Linux Guide @FirstLinux http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

shared secret

The idea that many people share the same password or key. Shared secrets are widely use because they are easy: there is simply one password to give out. On the other hand, the more widely secrets are shared, the more likely it will become compromised. In fact, many people believe that even sharing a secret among two people is extremely risky, where the proper solution is using public keys to distribute a randomly generated key only valid for the particular message. Example: DVD movies are encrypted with a randomly generated key. This key is then is then encrypted multiple times with hundreds of different keys. Every DVD player vendor owns one of these keys and imbeds it in their device, thus allows that player to decrypt the movie. (Presumably, if one of the keys is compromised, future movies can be generated without the offending key, causing players based upon that key to become obsolete). However, there is no good way to protect these keys, even though they are in hardware. In late 1999, students in Europe where able to break one of these keys (the Xing software DVD player), and from there they were able to break the majority of the other keys. (These keys only used 40-bit encryption, so breaking one key in the software player allowed a known-plaintext attack). From Hacking-Lexicon http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

ShareTheNet

ShareTheNet lets you share your low cost Internet connection across your network. Using ShareTheNet, all of the computers on your network can do their own work on the Internet as though they have their own connection. ShareTheNet allows just about any network software to use the Internet and its ultra-secure. Distribution development is not all that active. From LWN Distribution List http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

shareware

/sheir'weir/ n. A kind of freeware (sense 1) for which the author requests some payment, usually in the accompanying documentation files or in an announcement made by the software itself. Such payment may or may not buy additional support or functionality. See also careware, charityware, crippleware, FRS, guiltware, postcardware, and -ware; compare payware. From Jargon Dictionary http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

Shareware

A form of commercial software, where it is offered as "try before you buy". If the customer continues to use the product after a short trial period, they are required to pay a specified, usually nominal, fee. (Also, see Open Source and Public Domain.) From I-gloss http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sharutils

shar, unshar, uuencode, uudecode `shar' makes so-called shell archives out of many files, preparing them for transmission by electronic mail services. `unshar' helps unpacking shell archives after reception. Other related utility programs help with other tasks. `uuencode' prepares a file for transmission over an electronic channel which ignores or otherwise mangles the eight bit (high order bit) of bytes. `uudecode' does the converse transformation. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sharutils

The sharutils package contains the GNU shar utilities, a set of tools for encoding and decoding packages of files (in binary or text format) in a special plain text format called shell archives (shar). This format can be sent through email (which can be problematic for regular binary files). The shar utility supports a wide range of capabilities (compressing, uuencoding, splitting long files for multi-part mailings, providing checksums), which make it very flexible at creating shar files. After the files have been sent, the unshartool scans mail messages looking for shar files. Unshar automatically strips off mail headers and introductory text and then unpacks the sharfiles. Install sharutils if you send binary files through email very often. From Mandrake 9.0 RPM http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SHED

Segmented Hypergraphics EDitor (MS, Windows, ADT) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

shell

A command interpreter that allows a user to run executable code. Shells also store and configure additional information about a user's executable paths, environment variables, and usability options. From Redhat-9-Glossary http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

Shell

A text-mode window containing a command line interface to the operating system. From I-gloss http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

shell

a utility program that enables the user to interact with the UNIX operating system. Commands entered by the user are passed by the shell to the operating system which carries them out. The results are then passed back by the shell and displayed on the user's display. From Linux Guide @FirstLinux http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

Shell

One of several command line interfaces available on Unix machines, some common shells include Bourne shell, ksh, and tcsh. From KADOWKEV http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

shell

The default command-line interface on UNIX systems. Key point: This is similar to the "Command Prompt" or incorrectly named "DOS Prompt" on Windows systems. Key point: Many systems pass filenames along with commands directly to the shell. Hackers can exploit this by sending special shell characters (like the pipe | character) as part of filenames in order to execute their own commands. This is an example of an input validation exploit. Examples of this are web-servers, PERL scripts, and CGI scripts. Key point: The most popular shell among hackers is probably "bash", the shell from GNU that ships with Linux. (Culture: The original shell on UNIX is known as the "Bourne Shell", named for its creator. The acronym "bash" means "Bourne Again SHell", reflecting that fact that it is a rewrite of that shell). Key point: Retrieving someone's .bash_history file is a common attack against UNIX machines. Several embedded systems have shipped such that the file http://raq.robertgraham.com/~root/.bash_history could be retrieved via the web. Key point: The holy grail of UNIX hacking is to somehow obtain (or re-obtain) a root shell. In other words, the hacker wants to get a command-line on the victim system in order to carry out any task. For this reason, buffer overflow exploits often contain what is called "shell code". When the victim process is running with root privileges, the buffer-overflow will cause that process to begin running a shell. For example, an exploit might send a long password containing the shell code to an FTP server, converting the TCP connection to the FTP server into a full command-prompt from which any program can be launched. From Hacking-Lexicon http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

shell

[orig. Multics n. techspeak, widely propagated via Unix] 1. [techspeak] The command interpreter used to pass commands to an operating system; so called because it is the part of the operating system that interfaces with the outside world. 2. More generally, any interface program that mediates access to a special resource or server for convenience, efficiency, or security reasons; for this meaning, the usage is usually `a shell around' whatever. This sort of program is also called a `wrapper'. 3. A skeleton program, created by hand or by another program (like, say, a parser generator), which provides the necessary incantations to set up some task and the control flow to drive it (the term driver is sometimes used synonymously). The user is meant to fill in whatever code is needed to get real work done. This usage is common in the AI and Microsoft Windows worlds, and confuses Unix hackers. Historical note: Apparently, the original Multics shell (sense 1) was so called because it was a shell (sense 3); it ran user programs not by starting up separate processes, but by dynamically linking the programs into its own code, calling them as subroutines, and then dynamically de-linking them on return. The VMS command interpreter still does something very like this. From Jargon Dictionary http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

shell out

vi. [Unix] To spawn an interactive subshell from within a program (e.g., a mailer or editor). "Bang foo runs foo in a subshell, while bang alone shells out." From Jargon Dictionary http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

shell prompt

a character at the start of the command line which indicates that the shell is ready to receive your commands. The character is usually a '%' (percent sign) or a $ (dollar sign). It may be different on your system. From Linux Guide @FirstLinux http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

shell prompt

An application that offers interactive console or terminal access to a computer system. From Redhat-9-Glossary http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

Shell Prompt

The user input area of a shell. Whereas in a DOS shell the command prompt is designated by a Greater Than (>) symbol, in Linux it is usually a Percent (%) symbol, Dollar sign ($) or other special character, depending on the shell used. (Also, see Command Prompt.) From I-gloss http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

shell script

A program written to be interpreted by the shell of an operating system such as Linux. From Linux Guide @FirstLinux http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

Shell Script

A script designed to be run automatically when a shell is started. From I-gloss http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

Shell Scripting

Shell Scripting and hence computer programming is merely the idea of getting a number of commands to be executed, that in combination do some unique powerful function. From Rute-Users-Guide http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

shellcode

When a hackers successfully exploit vulnerabilities like buffer overflows, they will typically open a shell at the end of the exploit. With a command-line shell, the hacker will then be able to carry out any task they desire. However, opening shells within buffer overflow exploits can be difficult. Therefore, hackers often maintain libraries of "shellcode": code fragments for various operating systems that can be pasted into buffer overflow exploits. Key point: One of the difficulties in writing shellcode is that need to pass through filters. For example, when exploiting a bug in an SMTP server, you may find that the server strips the high-order bit from all bytes (i.e. will pass text but not binary). Therefore, all bytes between 0x00-07F will pass through, but not 0x80-0xFF. Alternately, a big limitation is systems that won't pass nul characters (0x00) because they terminate strings in functions like strcpy(). Therefore, when a hacker picks shellcode to append to their script, they must be fully aware of the limitations of the system they are dealing with. Key point: When creating new shellcode, create a C program that calls something like "system("/bin/sh");" or "execve("/bin/sh",0,0);" and grab the assembly output. At that point, pare it down to what you need. This requires extensive knowledge of assembly, needless to say. Key point: Sometimes you won't be able to grab a shell, so you have to create the exploit script to run a command. Typical choices of commands would be those that change passwords, add accounts, or in some fashion open up some other hole on the system. Key point: The vast majority of buffer overflow attacks will execute /bin/sh. Therefore, by simply removing this program (or replacing it with something that double-checks what's being done), you can protect yourself against many 0-day exploits. From Hacking-Lexicon http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

shellutils

The GNU shell programming utilities. The utilities: basename chroot date dirname echo env expr factor false groups hostid id logname nice nohup pathchk pinky printenv printf pwd seq sleep stty tee test true tty uname users who whoami yes. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SHF

Super-High Frequency From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

shhmsg

library for displaying messages - runtime This is Sverre H. Huseby's library for displaying messages in terminal based programs. It can treat the verbosity level and prepend the program name if necessary. This package contains what you need to run programs that use this library. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

shhopt

Command line option parser - runtime This is Sverre H. Huseby's library for parsing command line options. Both traditional one-character options and GNU-style --long-options are supported. This library does a little more than standard getopt. This package contains what you need to run programs that use this library. upstream webpage: http://shh.thathost.com/ From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

shift left (or right) logical

[from any of various machines' instruction sets] 1. vi. To move oneself to the left (right). To move out of the way. 2. imper. "Get out of that (my) seat! You can shift to that empty one to the left (right)." Often used without the `logical', or as `left shift' instead of `shift left'. Sometimes heard as LSH /lish/, from the PDP-10 instruction set. See Programmer's Cheer. From Jargon Dictionary http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

shoop

The SHell Object Oriented Programming library Every language under the sun these days is Object Oriented. In an effort to make POSIX shell more buzzword compliant, and to show that it's really not a big deal for a language to lack built-in OO support, we have added object orientation to plain old shell script. Specifically, we have implemented classless OO with introspection, finalization, serialization, and multiple inheritance. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

shoop-modules

A collection of shoop modules This package includes various modules for shoop, such as introspect, prettyprint, serialize, and some others. It is a good idea to have these at hand! From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

shorewall

Shoreline Firewall (Shorewall) The Shoreline Firewall (Shorewall) is an iptables based firewall that can be used on a dedicated firewall system, a multi-function masquerade gateway/server or on a standalone Linux system. Shorewall supports these features: * Customizable using configuration files. * Supports status monitoring with an audible alarm when an "interesting" packet is detected. * Include a fallback script that backs out the installation of the most recent version of Shoreline Firewall and an uninstall script for completely uninstalling the firewall. * Static NAT is supported. * Proxy ARP is supported. * Provides DMZ functionality. * Support for IPSEC, GRE and IPIP Tunnels. * Limited support for Traffic Control/Shaping From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

shortcut

An object that simplifies the process of accessing a file or running a program. A desktop icon is an example of an application shortcut. From Redhat-9-Glossary http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

shoulder surfing

Slang for watching somebody type their password on their keyboard. In much the same way that hackers teach themselves to read upside-down (in order to read documents when seated in front of a desk), hackers can also practice watching people type on the keyboard. Analogy: Crooks often steal credit card numbers in the same way. They stand behind people in line and read their credit cards as they sit on the countertop during handling. From Hacking-Lexicon http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

showcfont

displays all characters in the current screen-font. From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

showfont

displays all characters in the current screen-font. From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

showfont

font dumper for X font server From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

showimg

A feature-rich image viewer ShowImg is a feature-rich image viewer which can display numerous formats, including JPEG, PNG, GIF (animated) and MNG. It consists of a tree view frame, a directory/preview frame, and a view frame. The (larger) view frame can be exchanged with the (smaller) directory/preview frame. It can preview and display images from multiple directories and search for identical images. ShowImg also features a full-screen mode, zooming, sorting, drag'n'drop with Konqueror, and support for images in compressed archives (.zip). From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

showkey

examine the scan codes and keycodes sent by the keyboard From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

showmount

A tool for scanning a UNIX NFS servers to see what directories it is sharing/exporting and to whom. There are two basic forms of this command: showmount victim Shows which machines are logged onto the victim NFS server. showmount -e victim Shows which directories are being exported, and which groups can log on. Entries marked as (everyone) allow anybody to log on. Key point: This command used the rpc.mountd protocol (RPC program number 100005). On most systems, these commands do not require authentication, which means that anybody can run them. The showmount command with no arguments equates the MOUNTPROG_DUMP procedure, whereas the -e option equates to the MOUNTPROG_EXPORT procedure. This protocol is extremely light-weight, only two packets in each direction are needed: one for the portmap, and one for the procedure call. Contrast: Similar capabilities exist on Windows for Microsoft's SMB protocols. The net view \\victim command on Windows will view the shares that the victim is exporting. From Hacking-Lexicon http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

showmount

show mount information for an NFS server From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

showrgb

uncompile an rgb color-name database From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

shred

delete a file securely, first overwriting it to hide its contents From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

shtool

GNU Portable shell tool GNU shtool is a tool for developers of software programs. It is a compilation of small but very stable and portable shell scripts into a single shell tool. All ingredients were in successful use over many years in various free software projects. The compiled shtool program is intended to be used inside the source tree of other free software packages. There it can overtake various (usually non-portable) tasks related to the building and installation of such a package. It especially can replace the old mkdir.sh, install.sh and related scripts. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SHTSI

Somebody Had To Say It (slang, Usenet) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SHTTP

Secure HyperText Transfer Protocol (HTTP), "S-HTTP" From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SHTTP

Secure hypertext transfer protocol - developed by Enterprise Integration Technologies to ensure security with commercial transactions on the Internet. From Linux Guide @FirstLinux http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SHTTP (Secure Hyper Text Transport Protocol)

A secure, encrypted version of HTTP used for financial transactions and other private information sent via the Internet. From I-gloss http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SHTTP (Secure Hypertext Transport Protocol)

An extension of the World Wide Web's HyperText Transport Protocol (HTTP) that supports secure commercial transactions on the Web. Secure HTTP provides this support in two ways by assuring vendors that the customers attempting to buy the vendors' wares are who they say they are (authentication) and by encrypting sensitive information, such as credit-card numbers , so that it cannot be intercepted while en route. Secure HTTP was developed by Enterprise Integration Technology (EIT) and the National Center Supercomputing Applications (NCSA), with subsequent commercial development by Terisa system. Netscape communications developed a competing security technology , the Secure Sockets Layer (SSL) protocol. The two security protocols are incompatible, and for a time it was feared that no single widely accepted security protocol would emerge. In early 1995, however Netscape invested heavily in Terisa Systems and announced that it would integrate Secure HTTTP and SSL to provide the Web community with a single security protocol that will work with any security-capable browser. From QUECID http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

shutdown

bring the system down From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

shutdown

brings the system down in a secure way. All logged in users are notified that the system is going down, and login(1) is blocked. It is possible to shut the system down immideately, or after a delay. All processes are first notified that the system is going down by the signal SIGTERM. This gives programs like vi(1) the time to save the file being editted, mail and news processing programs a chance to exit cleanly, etc. Shutdown does its job by signalling the init process, asking it to change the runlevel. Runlevel 0 is used to halt the system, runlevel 6 is used to reboot the system and runlevel 1 is used to put to system into a state where administrative tasks can be performed. From Linux Guide @FirstLinux http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

shutdown

shut down part of a full-duplex connection From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SHV

Standard High Volume [motherboard] (SMP, Intel) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

shx

a console hotline client Used to connect to Hotline servers. See http://www.BigRedH.com/ for more information about Hotline. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

si

/proc system information viewer si (System Information Viewer) is a Linux application that displays information about the local computer from data gathered from the /proc filesystem, a readable interface to kernel memory. si displays information related to the CPU, hardware, memory, kernel, filesystems, network and running processes. Information is presented in a plain-text dump, colorized-pages, or process-information interface. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SI

Schweizer Informatikergesellschaft (org., Switzerland) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SI

Sk?rslutaeknifelags Islands (org., Iceland) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SI

Source Index [register] (CPU, Intel, assembler) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SI

SPARC International (org., manufacturer) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SI

System Information From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SIA

Semiconductor Industry Association (org., USA) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

siag-common

Common files for all versions of the Siag spreadsheet. These are the scheme library files for siag, and examples sheets. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

siagoffice-common

Common files for Siag Office Siag Office is a bundle of the following programs: * siag [Scheme In A Grid], a spreadsheet * pw [Pathetic Writer], a word-processor * egon, an animation program * xfiler, a file manager From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

siagoffice-plugins

Plugins for Siag Office These are the standard plugins for use with Siag Office. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SIAM

Society for Industrial and Applied Mathematics (org., USA) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SIB

Service Independent building Block (IN) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SIBO

SIxteen Bit Organizer or SIngle Board Organizer (Psion, PDA) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SIC

Silicon Integrated Circuit From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SIC

Standard Industry Classification From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SIC

Subject Indicator Code From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SICE

??? (org.) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SICS

Swedish Institute of Computer Sciences (org., Sweden) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SID

Security IDentifier From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SID

Signaling IDentifier From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SID

Society for Information Displays (org.) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SID

SWIFT Interface Device (SWIFT) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SID

System IDentification From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SIDF

System Independent Data Format (Novell, SMS) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SIDM

Serial Impact Dot Matrix [printer] From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sidplay-base

Music player for tunes from C64 and C128 (console) This is a simple music player for C64 and C128 tunes, also known as SID tunes. The package includes a program (sid2wav) for creating .wav files. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SIDR

Service Independent Data Requester (Novell, Netware) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

siege

Http regression testing and benchmarking utility Siege is an regression test and benchmark utility. It can stress test a single URL with a user defined number of simulated users, or it can read many URLs into memory and stress them simultaneously. The program reports the total number of hits recorded, bytes transferred, response time, concurrency, and return status. Siege supports HTTP/1.0 and 1.1 protocols, the GET and POST directives, cookies, transaction logging, and basic authentication. Its features are configurable on a per user basis. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

siege-ssl

Http/https regression testing and benchmarking utility Siege is an regression test and benchmark utility. It can stress test a single URL with a user defined number of simulated users, or it can read many URLs into memory and stress them simultaneously. The program reports the total number of hits recorded, bytes transferred, response time, concurrency, and return status. Siege supports HTTP/1.0 and 1.1 protocols, the GET and POST directives, cookies, transaction logging, and basic authentication. Its features are configurable on a per user basis. This version of siege package includes HTTPS support. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SIETEM

Siemens TTCN Test Manager (TTCN, Tektronix, SNI) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SIF

Significant Pel Field (MPEG) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SIFT

Software Implemeted Fault Tolerance (HIFT) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SIFTUFT

Sender-Initiated File Transfer/Unsolicited File Transfer (RFC 1440), "SIFT/UFT" From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SIG

/sig/ n. (also common as a prefix in combining forms) A Special Interest Group, in one of several technical areas, sponsored by the Association for Computing Machinery; well-known ones include SIGPLAN (the Special Interest Group on Programming Languages), SIGARCH (the Special Interest Group for Computer Architecture) and SIGGRAPH (the Special Interest Group for Computer Graphics). Hackers, not surprisingly, like to overextend this naming convention to less formal associations like SIGBEER (at ACM conferences) and SIGFOOD (at University of Illinois). From Jargon Dictionary http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SIG

Special Interest Group From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sig block

/sig blok/ n. [Unix; often written `.sig' there] Short for `signature', used specifically to refer to the electronic signature block that most Unix mail- and news-posting software will automagically append to outgoing mail and news. The composition of one's sig can be quite an art form, including an ASCII logo or one's choice of witty sayings (see sig quote, fool file); but many consider large sigs a waste of bandwidth, and it has been observed that the size of one's sig block is usually inversely proportional to one's longevity and level of prestige on the net. See also doubled sig. From Jargon Dictionary http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SIGART

[ACM] Special Interest Group on ARTificial intelligence (org., ACM, AI) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SIGBIT

Special Interest Group on Business Information Technology From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SIGCAT

Special Interest Group for CD-ROM Applications Technology (CD) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SIGCPR

Special Interest Group on Computer Personal Research (org., ACM) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SIGCSE

Special Interest Group on Computer Science Education (org., ACM) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SIGDA

Special Interest Group on Design Automation (org., ???) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SIGG

SIGnaturGesetz DFUe, Germany, "SigG" From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SIGL

SIGnal Line (REXX) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SIGMA

Software Industrialized Generator and Maintenance Aids system (MITI) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

signal

Software interrupts sent to a program to indicate that an important event has occurred. The events can vary from user requests to illegal memory access errors. Some signals, like the interrupt signal, indicate that a user has asked the program to do something that is not in the usual flow of control. http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

Signals

used to inform processes of unexpected external events such as a time out or forced termination of a process. A signal consists of prescribed message with a default action embedded in it. Each signal has a unique number associated with it. An example is SEGV, segmentation violation. From Linux Guide @FirstLinux http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

signature

In anti-virus and intrusion detection systems, a signature is a pattern that the system will look for when scanning files or network traffic. (Note: this term is unrelated to digital signatures). Key point: Marketing forces often mean that companies have to fill their products with useless signatures. Don't be impressed because one product has more signatures than another. Key point: One of the key goals of hacking is to evade signature detection. Virus writers attempt to encrypt their viruses, whereas remote hackers attempt to alter the networking protocol so that it has the same effect, but a different pattern on the wire. From Hacking-Lexicon http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SIGNC

Special Internet Group Name Cache From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

signify

Automatic, semi-random ".signature" rotator/generator Signify is a neat little program that allows a random signature to be generated from a set of rules. Each "section" can be one of an unlimited number of possibilities, each with its own weighting so those really cool quotes can appear more often than others. Sections can also be placed next to each other vertically to create columns. Each section can be formatted independently as left/right/center and top/bottom/vcenter. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

signing-party

Scripts and docs useful for keysigning parties To improve the web of trust, so-called signing parties are held at various occasions From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SIGPLAN

Special Interest Group for Programming LANguages From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sigrot

Signature file rotation program. Rotates your .signature file every time the sigrot is run. Includes an option for a non-rotating header and/or footer with a rotating middle. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SIGV

SIGnaturVerordnung (DFUe), "SigV" From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SIGWEB

Special Interest Group on the world wide WEB (org., UK) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SII

Static Invocation Interface From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SIIA

Software and Information Industry Association (org., USA) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sillypoker

A poker game silly Poker is an advanced poker game with support for a single player against 1-4 computer opponents in five card draw, five card stud, and seven card stud poker games. The program in this package contains support for the standard text interface and the curses interface. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SILS

Secure Interoperable LAN/MAN Standard (LAN, MAN) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SILS

Standard for Interoperable LAN Security (LAN) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SIM

Signal Interface Module From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SIM

Subscriber Identity Module (GSM, mobile-systems) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SIMD

Single Instruction [stream], Multiple Data [stream] (CPU) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SIMDIS

SIMulation DISposition (MBAG) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

simgear0

Simulator Construction Gear -- shared libraries SimGear is a collection of libraries useful for constructing simulation and visualization applications such as FlightGear or TerraGear. This package contains the shared libraries. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SIMIS

SIcheres MIkroprozessor System (SNI) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SIMM

Single Inline Memory Module (IC) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SIMNET

SIMulation NETwork (network) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

simph323

Simple example from the OpenH323 project The OpenH323 project aims to create a full featured, interoperable, Open Source implementation of the ITU H.323 teleconferencing protocol that can be used freely by everybody. This protocol is most used for Voice over IP (VoIP) conferencing. For more information on the OpenH323 project visit them at http://www.openh323.org/ From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

simple mail transfer protocol (SMTP)

A protocol for delivering email; the standard email protocol used on the Internet, SMTP is also used in other TCP/IP networks. From Redhat-9-Glossary http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

Simply GNUstep

Simply GNUstep is a Linux/GNU distribution aimed at providing an OpenStep feeling from bootup on. This is a stripped down distribution, providing ease of use. (Think OS X for x86). InterimDeveloperRelease-1 came out on August 14, 2002. Version 1 was released September 9, 2002. From LWN Distribution List http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

simulpic

Microchip PIC device simulator This software allows to simulate the execution of any program on a Microchip family microcontroller device. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

since

A tail(1) work-alike that saves and uses state information. since is a tail(1) work-alike that remembers how much of a file you have viewed and displays only what's new when you next view that file. Ideal for viewing log files (it'll only show what's new in the file since the last time it was run). From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sinek

GTK+ video/audio player, an alternative frontend to xine Sinek is a GTK+ video/audio player, capable of supporting all formats xine supports. At the moment, this includes: * Audio MPEG layers 1, 2, and 3, * Vorbis (.ogg), * pcm, * Video MPEG 1 and 2, * MPEG 4 (aka OpenDivX), * MS MPEG 4 (aka DivX), * motion jpeg. One of the main differences between Sinek and other popular multimedia players is that it doesn't use skins; instead, it has a standard GTK+ interface. In other words, it doesn't clash with your GTK+ theme. :) From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sing

A fully programmable ping replacement. Sing is a little tool that sends ICMP packets fully customized from command line. The main purpose is to replace/complement the niceful ping command with certain enhancements as: - Send fragmented packets (Linux and BSD). - Send monster packets > 65534 (Linux and BSD). - Send/read spoofed packets.(Libpcap included in distribution). - Send many ICMP Information types in addition to the ECHO REQUEST type sent by default as Address Mask Request, Timestamp, Information Request, - Router Solicitation and Router Advertisement. - Send many ICMP error types: Redirect, Source Quench, Time Exceeded, Destination Unreach and Parameter Problem. - Send to host with Loose or Strict Source Routing. - Use little fingerprinting techniques to discover Window$ or Solaris boxes. - Send ICMP packets emulating certain OS: Cisco, Solaris, Linux, Shiva, Unix and Window$ at the moment. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

single user mode

a system mode created for administrative and maintenance activities demand complete control of the system. When the system is in this state whoever is logged in becomes root. This is however, a minimal system startup state. Only the root partition is mounted so only commands that reside in the root filesystem are available. From Linux Guide @FirstLinux http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

single-click

To tap a mouse button one time. From Redhat-9-Glossary http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SIO

Simultan Input Output (QMS) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sip

Python/C++ Bindings Generator SIP is a tool for generating bindings for C++ classes with some ideas borrowed from SWIG, but capable of tighter bindings, because it's specific to C++ and Python. SIP was originally designed to generate Python bindings for KDE and so has explicit support for the signal slot mechanism used by the Qt/KDE class libraries. Features: - connecting Qt signals to Python functions and class methods - connecting Python signals to Qt slots - overloading virtual member functions with Python class methods - protected member functions - abstract classes - enumerated types - global class instances - static member functions. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SIP

SCSI-3 Interlocked Protocol (SAM) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SIP

Session Initiation Protocol (IETF, VOIP) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SIP

Simulated Input Processor From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SIP

SMDS Interface Protocol (SMDS) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SIP

Strategische InformationsPlanung (IM) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SIP

Symbolic Input Program From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SIPC

Simply Interactive Personal Computer From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SIPO

Serial In Parallel Out From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sipp

create and render 3-d scenes This is SIPP, the SImple Polygon Processor, version 3.1. SIPP is a library for creating 3-dimensional scenes and rendering them using a scan-line z-buffer algorithm. A scene is built up of objects which can be transformed with rotation, translation and scaling. The objects form hierarchies where each object can have arbitrarily many subobjects and subsurfaces. A surface is a number of connected polygons which are rendered with either Phong, Gouraud or flat shading. An image can also be rendered as a line drawing of the polygon edges without any shading at all. The library supports texture mapping with textures in up to 3-dimensions and automatic interpolation of texture coordinates. Simple anti-aliasing can be performed through oversampling. A scene can be illuminated by an arbitrary number of light sources and a number of different light sources are availaible. The light from some of them are capable of casting shadows of objects. A basic shading algorithm is provided with the library, but the user can also use his own shading algorithms for each surface to produce special effects. Objects can have varying degree of transparency, controlled by the shader. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SIPP

Simple Internet Protocol Plus (IP, IPV6, RFC 1710, Internet) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SIPP

SImple Polygone Processor (Unix) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SIPP

Single Inline Package Pin (IC) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SIPRNET

Secret IP Router NETwork (DISN, mil.) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SIQ

Single Input Queue (IBM, OS/2) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SIR

Save Instruction Recognition From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SIR

Selective Information Retrieval From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SIR

Serial InfraRed (HP) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SIR

Sicherheit im Rechenzentrum (TPS) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SIR

Statistical Information Retrieval From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SIR

Sustained Information Rate (SMDS) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sirc

The full-featured Perl IRC client sirc, the Perl IRC client, is a full-featured package to let you chat with anyone, anywhere in the world. sirc has all the features you need in an IRC client -- DCC, logging, and a huge ability to be customized are all part of the package. With Perl, it's quite simple to extend sirc's capabilities -- the programming interface is well-documented and well-developed. Several example scripts are included in /usr/lib/sirc. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SIRENE

Supplementary Information REquest at the National Entry (SIS, Europe) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SIS

Schengen Information System (police, Europe) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SIS

Silicon Integrated Systems [corp.] (manufacturer, Taiwan) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SIS

Software Information Services From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SIS

Stellen-Informations-Service (WWW) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SIS

Strategic Information System From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SISAL

Streams and Iteration in a Single-Assignment Language From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SISD

Single Instruction [stream], Single Data [stream] (CPU) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SIT

institut fuer SIchere Telekommunikation (GMD, org.) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SITD

Still In The Dark (slang) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sitecopy

A program for managing a WWW site via FTP, DAV or HTTP sitecopy is for copying locally stored websites to remote ftp servers. With a single command, the program will synchronize a set of local files to a remote server by performing uploads and remote deletes as required. The aim is to remove the hassle of uploading and deleting individual files using an FTP client. sitecopy will also optionally try to spot files you move locally, and move them remotely. sitecopy is designed to not care about what is actually on the remote server - it simply keeps a record of what it THINKS is in on the remote server, and works from that. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sitescooper

retrieves stories from websites for your Palm Pilot Sitescooper automatically retrieves the stories from several news websites, trims off extraneous HTML, and converts them into formats you can read on your Palm computing device for later reading on-the-move. It maintains a cache, and will avoid stories you've already read. It can handle 1-page sites, 1-page with diffing, 2-level and 3-level sites, and it's very easy to add a new site to its list. Even if you don't have a Palm handheld, it's still handy for simple website-to-text conversion. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sitescooper-sites

retrieves stories from websites for your Palm Pilot Sitescooper automatically retrieves the stories from several news websites, trims off extraneous HTML, and converts them into formats you can read on your Palm computing device for later reading on-the-move. It maintains a cache, and will avoid stories you've already read. It can handle 1-page sites, 1-page with diffing, 2-level and 3-level sites, and it's very easy to add a new site to its list. Even if you don't have a Palm handheld, it's still handy for simple website-to-text conversion. This package contains sample sites files. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SIWPS

Simple Internet White Pages Service (Internet) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SIZ

Sparkassen-Informatik-Zentrum (org., banking) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

size

list section sizes and total size. From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SJF

Shortest Job First From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sjog

A program to use the "Jog Dial" on Sony Vaio Laptops S-Jog is a program that uses the Sony Vaio laptops Jog Wheel to do various things: * Launch applications * Adjust screen brightness * Adjust volume * Act like a mousewheel S-Jog pops up when you click the Jog Wheel then disappears after 3 seconds of idle time. The mousewheel feature is turned on when S-Jog is hidden. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sketch

Interactive vector drawing program for X11 Sketch is an interactive vector drawing program, comparable to CorelDraw. It currently support drawing primitives like rectangles, ellipses, Bezier curves, bitmap and EPS images and text. All objects can be rotated, scaled and sheared. Primitives can have fill and line properties. A number of special effects like blend groups, text to Bezier and text along a path are provided. Sketch supports an unlimited undo history. Import of XFig, AI, WMF, CMX and SVG files. Exports to EPS, AI and SVG. Sketch is written in Python with an Tkinter GUI. User scripts can be written in Python. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SKIA

Secure Key Issuing Authority (TESS) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

skill

report process status From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SKIP

Simple Key-management for Internet Protocols (Internet, cryptography, Sun) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

skk

Simple Kana to Kanji conversion program SKK is a very fast and efficient Japanese input system written entirely in emacs lisp. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

skkdic

SKK Dictionary (SKK-JISYO.L) This package contains SKK-JISYO.L. SKK-JISYO.[SM] and other dictionaries are provided in skkdic-extra. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

skkfep

skk Japanese input method front end skk Japanese input method front end. It's usable on console. (not XIM) From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

skkinput

X input method for Japanese for SKK method. skkinput is application to input Japanese for X application using protocols such as kinput2/XIM/Ximp protocol. skkinput communicates with skkserv using Berkeley Socket. Without skkserv, local dictionary files is used. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

skksearch

A SKK dictionary server handling multiple dictionaries. Skksearch is an alternative to skkserv. Unlike skkserv, it can deal with more than one dictionary. In addition, it supports three types of dictionaries, that is, plain, Berkeley DB 2.x, and cdb format. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

skkserv

SKK Dictionary server Skkserv is a dictionary server for SKK. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

skktools

SKK dictionary maintenance tools This package provides tools to maintain SKK dictionaries. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

Skolelinux

Skolelinux is a Norwegian distribution for educational use, as a server with thin clients. From LWN Distribution List http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

skyutils1

Many useful functions for the web like smssend This library contains functions about chained lists, string manipulation, socket and HTTP protocol. It's used in gsmssend and smssend. This package contains the files needed for running such applications. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sl

Correct you if you type `sl' by mistake Sl is a program that can display animations aimed to correct you if you type 'sl' by mistake. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sl2h

simple latex to HTML converter From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SLA

Service Level Agreement From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

Slackware Linux

The Slackware project is volunteer based and well established, with a loyal following. Supports x86 only. Slackware 9.0 was released March 19, 2003. From LWN Distribution List http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

Slackware Live CD

Slackware Live CD is a bootable CD containing a Linux operating system. It runs Linux directly from CDROM without installing. The live CD described here is based on Slackware Linux distribution and is downloadable as an ISO. There are also all the scripts and source code needed to build your own live CD. Version 2.9.0.16 was released June 1, 2003. A CD-based distribution. From LWN Distribution List http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SLAM

Simulation Language for Alternative Modeling From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

slang

S-lang is a C-like programming language, designed to be embedded in programs. It provides standard screen handling functions and can provide access to program internals, allowing program users to create customized procedures. From Redhat 8.0 RPM http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

slang1

The S-Lang programming library - runtime version. S-Lang is a C programmer's library that includes routines for the rapid development of sophisticated, user friendly, multi-platform applications. This package contains only the shared library libslang.so.* and copyright information. It is only necessary for programs that use this library (such as jed and slrn). If you plan on doing development with S-Lang, you will need the companion -dev package as well. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

slang1-ja

The S-Lang programming library with Japanese patch, runtime version. S-Lang is a C programmer's library that includes routines for the rapid development of sophisticated, user friendly, multi-platform applications. This package contains only the shared library libslang-ja.so.* and copyright information. It is only necessary for programs that use this library (such as jed and slrn). If you plan on doing development with S-Lang, you will need the companion -dev package as well. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

slang1-pic

The S-Lang programming library, shared library subset kit. This is used to develop subsets of the S-Lang shared libraries for use on custom installation floppies and in embedded systems. Unless you're making one of those, you won't need this package. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

slang1-utf8-pic

The S-Lang programming library, shared library subset with utf8 support. This is used to develop subsets of the S-Lang shared libraries for use on custom installation floppies and in embedded systems. Unless you're making one of those, you won't need this package. This packages has wide character support. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

slang1a-utf8

The S-Lang programming library with utf8 support S-Lang is a C programmer's library that includes routines for the rapid development of sophisticated, user friendly, multi-platform applications. This package contains only the shared library libslang.so.* and copyright information. It is only necessary for programs that use this library (such as jed and slrn). If you plan on doing development with S-Lang, you will need the companion -dev package as well. This packages has wide character support. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

slapd

OpenLDAP server (slapd). This is the OpenLDAP (Lightweight Directory Access Protocol) standalone server (slapd). The server can be used to provide a standalone directory service and also includes the slurpd replication server and centipede. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

slash

The / character Linux uses in path names. A / by itself, or at the beginning of a pathname, means the root directory of the file system. Slashes are used also between one directory name and the next, and between the directory name and the filename in long path names. From Linux Guide @FirstLinux http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

Slash (/)

The symbol used in file pathnames, instead of the backslash (\) used in the DOS/Windows and OS/2 operating systems. From I-gloss http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

slashem

A variant of Nethack Super Lotsa Added Stuff Hack - Extended Magic (SLASH'EM) is a role-playing game where you control a single character. The interface and gameplay are similar in style to Rogue, ADOM, Angband and, of course, Nethack. You control the actions through the keyboard and view the world from an overhead perspective. The problem: The Amulet of Yendor has been stolen. Not only that but it appears that the Wizard of Yendor (not a nice person), who took the amulet, is hiding in the Dungeons of Doom (not a friendly place). Enhancements over Nethack includes: - New roles - New skill system - Riding pets - New special levels From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

slatec

numerical computation library slatec is a fortran library of over 1400 routines for numerical tasks. Some of the subjects covered are: Arithmetic, error analysis, Elementary and special functions, Linear Algebra, Interpolation, Solution of nonlinear equations, Optimization, Differentiation, integration, Differential and integral equations, Integral transforms, Statistics, probability, and Data handling. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

slattach

attach a network interface to a serial line From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

slave

In hard drive technology, a non-bootable drive that is used mostly for system and file storage; is controlled by the master drive. From Redhat-9-Glossary http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

slay

kills all of the user's processes Slay provides you with a way to quickly get rid of all processes selected user owns. Very useful if you want to harm somebody. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SLC

Service Level Contract From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SLC

Simple Line Code [modulation] From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SLD

Second Level DOMAIN (Internet, ICANN) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SLDC

Synchronous Data Link Control From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SLDRAM

SyncLink Dynamic Random Access Memory (DRAM, RAM) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SLE

Screen List Editing From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SLED

Single Large Expensive Drive From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sleep

delay for a specified amount of time From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sleep

Pertaining to a UNIX process, to suspend execution until some event takes place or for a specific period of time. Processes automatically sleep while waiting for results from peripherals. From Linux Guide @FirstLinux http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sleep

Sleep for the specified number of seconds From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sleepd

puts a laptop to sleep during inactivity This is a daemon to force laptops to enter apm sleep after some period of inactivity. This is useful if your laptop does not automatically go to sleep when you aren't using it, and, like me, you often forget to shut it off. The daemon can also be configured to put a laptop to sleep if its battery nearly runs out of power. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SLFP

Shared Frame Buffer Interconnect (ATI, Intel) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SLI

Scan Line Interleave (3D) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SLI mode

SLI means "Scanline Interleave"In this mode, two Pixelfx are connected and render in alternate turns, one handling odd, the other handling even scanlines of the actual output. From Linux Guide @FirstLinux http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

slib

Portable Scheme library. SLIB is a portable scheme library meant to provide compatibility and utility functions for all standard scheme implementations. SLIB includes initialization files for Chez, ELK 2.1, GAMBIT, MacScheme, MITScheme, scheme->C, Scheme48, T3.1, and VSCM. SCM also supports SLIB. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SLIC

Serial Link and Interrupt Controller (TSMP, Wyse) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SLIC

Subscriber Line Interface Circuit (PBX) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

slice

Extract out pre-defined slices of an ASCII file The slice program reads an input file and divide its prepared ASCII contents into possibly overlapping slices. These slices are determined by enclosing blocks which are defined by begin and end delimiters which have to be already in the file. The final output gets calculated by a slice term consisting of slice names, set theory operators and optional round brackets. For more information, please visit http://www.engelschall.com/sw/slice/ From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SLIP

Acronym for Serial Line Internet Protocol, SLIP is a serial packet protocol used to connect a remote computer to the Internet using modems or direct serial lines, SLIP requires an Internet provider with special SLIP accounts or a shell account a SLIP emulator such as TIA(tm) or SLiRP. From KADOWKEV http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SLIP

see serial line internet protocol (SLIP). From Redhat-9-Glossary http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SLIP

Serial Line Internet Protocol (Internet, RFC 1055), "SL/IP" From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SLIP

Serial Line Internet Protocol - A communication method that allows a personal computer to connect directly to the Internet using a standard telephone line. It preceded PPP as the means through which access to the Internet could be achieved. From Linux Guide @FirstLinux http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SLIP (Serial Line Internet Protocol)

A standard for using a regular telephone line (a serial line) and a modem to connect a computer as a realInternet site. SLIP has largely been replaced by PPP. From Matisse http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SLIP (Serial Line Internet Protocol)

Allows a computer to connect to the Internet using a modem and telephone line--similar to PPP. Users then navigate the Internet using software on their own computer. This is in contrast to using a dialup teminal connection, where a user is forced to navigate the Net using a text-based set of menus. From Glossary of Distance Education and Internet Terminology http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SLIP (Serial Line Internet Protocol)

Predecessor of PPP. Allows a user to connect to the Internet directly over a high-speed modem. From Glossary of Distance Education and Internet Terminology http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SLIP (Serial Linux Internet Protocol)

One of two standards specifying how a workstation or personal computers can link to the Internet by means of a dialup connection (the other standard is the Point-to-Point Protocol [PPP] . SLIP defines the transport of data packets through an asynchronous telephone line. Therefore, SLIP enables computers not directly connected to local area networks (LANs) to be fully connected to the Internet. This mode of connectivity is far superior to shell access (a dialup, text-only account on a UNIX computer) because it enables you to use the Internet tools of your choice (such as a graphical Web browser to run more than one Internet application at a time and to download data directly to your computer, with no intermediate storage required. From QUECID http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

slirp

SLIP/PPP emulator using a dial up shell account Slirp is a TCP/IP emulator which turns an ordinary shell account into a (C)SLIP/PPP account. This allows shell users to use all the funky Internet applications like Netscape, Mosaic, CUSeeMe, etc. Please note that maybe your ISP really doesn't like you using slirp, because they want to charge more for a ppp connection, so use it at your own risk. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

slmon

A simple S-Lang based system performance monitor SLmon is a tool for monitoring system's performance. It displays results using a nice and readable text-based UI, providing either figures or a graph. It currently monitors: - CPU load (SMP is supported) - memory and swap load - uptime, date and time - number of logged in users From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SLMR

Silly Little Mail Reader From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

slocate

a secure locate replacement This locate should show only the files on your system that you have access to. Note: If your computer is not up 24/7 you should consider installing anacron since the database is only updated once a night. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

slocate

Slocate is a security-enhanced version of locate. Just like locate, slocate searches through a central database (which is updated nightly) for files that match a given pattern. Slocate allows you to quickly find files anywhere on your system. From Redhat 8.0 RPM http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sloccount

Programs for counting physical source lines of code (SLOC) SLOCCount (pronounced "sloc-count") is a suite of programs for counting physical source lines of code (SLOC) in potentially large software systems (thus, SLOCCount is a "software metrics tool" or "software measurement tool"). SLOCCount can count physical SLOC for a wide number of languages; listed alphabetically, they are: Ada, Assembly, awk, Bourne shell, C, C++, C shell, Expect, Fortran, Java, lex/flex, LISP (including Scheme), Modula3, Objective-C, Pascal, Perl, PHP, Python, sed, TCL, and Yacc. SLOCCount can automatically determine if a file is a source code file or not, and if so, which language it's written in. As a result, you can analyze large systems completely automatically. SLOCCount also includes some report-generating tools to collect the data generated and present it in several different formats. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

slogin

OpenSSH SSH client (remote login program) From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SLP

Service Location Protocol (IP) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SLP

Service Logic Program (IN) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SLP

Symposium on Logic Programming (conference) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

slpd

OpenSLP Server (slpd) SLPv2 (RFC 2608) is a IETF standard protocol that is used to discover/advertise services on the network. You can use SLP for anything from locating a suitable printer on your floor to discovering what LDAP directories are available in your organization. This package provides slpd, the OpenSLP daemon, which provides an SLPv2 compliant Service Agent and Directory Agent. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

slpim

Personal Information Manager for the console slpim is a Personal Information Manager. It can keep an addressbook with pre-defined fields. slpim can export the addressbook database to many formats, like mutt-alias file, html file, pine format, plain-text, etc. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SLQ

Super Letter Quality [fonts] (Star) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SLR

Scalable Linear Recording (Streamer, Tandberg) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

slrn

threaded news reader (fast for slow links) Slrn is a threaded news reader with color support that is designed to read news fast over slow links. Slrn can read news via NNTP or directly from a local news spool. Slrn can be heavily customized from its rc file, and even includes a built in macro language. There is also support for killfiles and article scoring. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

slrn-ja

threaded news reader (fast for slow links), Japanese version Slrn is a threaded news reader with color support that is designed to read news fast over slow links. Slrn can read news via NNTP or directly from a local news spool. Slrn also has GroupLens support. Slrn can be heavily customized from its rc file, and even includes a built in macro language. There is also support for killfiles and article scoring. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

slrnface

Shows X-Faces from slrn in an X11 terminal emulator The slrnface helper utility can be used from the slrn news reader to show X-Faces in Usenet articles when slrn is run from an X11 terminal emulator. It is not intended to be run directly from the command line. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

slrnpull

pulls a small newsfeed from an NNTP server Slrnpull pulls a small newsfeed from an NNTP server, to a local news spool directory. The news spool can be used by news readers (such as slrn), which can read a local news spool without a NNTP server. Slrnpull also has the ability to killfile articles so that they will not be downloaded from the server. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SLS

Softlanding Linux System (Linux) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SLS

Storage Library System From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

slsc

S-Language port of the classic SC spreadsheet The slsc spreadsheet is a much modified version of the public domain spreadsheet sc, posted several years ago by Mark Weiser as vc and originally by James Gosling. slsc is based on Robert Bond's sc 6.1 whereas the latest version of sc is 6.21. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SLSI

Super Large Scale Integration From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SLT

Solid-Logic Technology From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SLU

Secondary Logical Unit From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SLU

Serial Line Unit From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SM

Smart Media [card] From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SM

Sparse Mode (PIM, Multicast) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMA

Shared Memory Architecture From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMA

Standardization Management Activity From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMAE

System Management Application Entity (OSI) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMAF

Service Management Agent Function (IN) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

smail

Electronic mail transport system. Smail is a mail transport agent (MTA). An MTA is the innards of the mail system - it takes messages from user-friendly mailer programs and arranges for them to be delivered locally or passed on to other systems as required. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

small computer systems interface (SCSI)

A high-speed interface that can connect to computer devices such as hard drives, CD-ROM drives, and tape drives. SCSI is pronounced as "Scuzzy." From Redhat-9-Glossary http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

Small Linux

A Small Kernel Project; Small Linux has been used (console based) on a 386 laptop with 2 meg of ram and a 40 meg hard drive. Small Linux 0.8.1 is the current version, released December 6, 2001. From LWN Distribution List http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

smalledit

Stripped down version of Cooledit. Only a few of cooledit's commandline options are supported by smalledit. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

smalleiffel

The GNU Eiffel Compiler SmallEiffel is a compiler for the Eiffel language, which is a pure object-oriented language providing strong type-checking and based on the concept of 'design by contract'. It allows multiple inheritance and does it well. Design-by-contract means that a class guarantees that certain conditions will always hold, and that a routine guarantees certain results given certain specified inputs. The rules for inheritance mean that contracts can be relied on even when classes are reused through inheritance. The Eiffel language is described and defined in the book "Eiffel: The Language" by Bertrand Meyer. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SmallTalk

A high-level declarative programming language and programming environment that treates computations as objects that send messages to one another. SmallTalk encourages the programmer to define objects in terms relevant to the intended application. The language is highly extensible because it enables you to create objects, which can be reused, quite easily. SmallTalk inspired HyperTalk, the software command language of HyperTalk, an application provided with every Macintosh produced since 1987. In this new guise, SmallTalk fulfills its goal of making programming more accessible; tens of thousand of Macintosh users have learned how to program in HyperTalk. See object-orientated-programming language. From QUECID http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMAP

System Management Application Process (OSI) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMART

Self-Monitoring, Analysis and Reporting Technology (HDD, IDE, Conner, IBM, Quantum, Seagate, WD), "S.M.A.R.T." From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

smart card

A smart-card looks like a credit-card but contains an embedded microprocessor. The gold contact pad with roughly 8 contact points is visible on the outside of the card. As of the year 2000, typical circuits consisted of an 8-bit microprocessor running at 5MHz, 1K of RAM, and 16K of ROM with a 9.6-kbps half-duplex interface. (Much of the design of AES focused on being able to run within these stringent requirements). Key point: Whereas the data on the magnetic strip of a credit-card can be easily read or changed, smart-cards are designed to be tamper proof. Example: All Germans have a smart-card for health insurance. As of 2001, smart-cards have been popular in Europe for about a decade, but are still mostly unknown in the United States. Example: The tamper-proof features make it popular for authentication in both physical security and infosec uses. From Hacking-Lexicon http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

smart terminal

n. 1. A terminal that has enough computing capability to render graphics or to offload some kind of front-end processing from the computer it talks to. The development of workstations and personal computers has made this term and the product it describes semi-obsolescent, but one may still hear variants of the phrase `act like a smart terminal' used to describe the behavior of workstations or PCs with respect to programs that execute almost entirely out of a remote server's storage, using local devices as displays. 2. obs. Any terminal with an addressable cursor; the opposite of a glass tty. Today, a terminal with merely an addressable cursor, but with none of the more-powerful features mentioned in sense 1, is called a dumb terminal. There is a classic quote from Rob Pike (inventor of the blit terminal): "A smart terminal is not a smartass terminal, but rather a terminal you can educate." This illustrates a common design problem: The attempt to make peripherals (or anything else) intelligent sometimes results in finicky, rigid `special features' that become just so much dead weight if you try to use the device in any way the designer didn't anticipate. Flexibility and programmability, on the other hand, are really smart. Compare hook. From Jargon Dictionary http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

smartcard

A smartcard utility for Linux `smartcard' allows you to control a smart card reader from the command line. Currently, it supports just a few basic commands which only work on plain I2C memory cards. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

smartlist

Versatile and Intelligent List Processor SmartList is a mailing list manager built on top of the procmail mail processing package. Some features: * Enough intelligence to overcome the ignorance of some subscribers (will direct subscribe and unsubscribe requests away from the regular list and automatically onto the -request address). * No hardwired format for (un)subscribe requests (i.e. new subscribers need not be educated, unsubscribing users do not need to remember any particular syntax). *Intelligent* automatic removal of addresses from the list that cause too many bounces. * Duplicate submissions are eliminated automatically. * You can set up a mailing list to function as a standalone mail archive server. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

smartsuite

SMART suite - SMART utility suite for Linux SMART suite controls and monitors storage devices running the Self-Monitoring, Analysis and Reporting Technology System (S.M.A.R.T.) build into ATA and SCSI Hard Drives. This is used to check the reliability of the hard drive and predict drive failures. The suite contains two utilities: smartctl is a command line utility designed to perform simple smart tasks; smartd is a daemon that periodically monitors smart status and reports errors to syslog. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMASE

System Management Application Service Element (OSI) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMB

Introduction This is the SMB HOWTO. This document describes how to use the Server Message Block (SMB) protocol, also called the Session Message Block, NetBIOS or LanManager protocol, with Linux using Samba. Although this document is Linux-centric, Samba runs on most Unix-like operating systems. This document is maintained by David Wood ( dwood@plugged.net.au). Additions, modifications or corrections may be mailed there for inclusion in the next release. Much more Samba documentation is available at the Samba Web site, located at http://www.samba.org/. There is a tremendous amount of information there; please have a look before asking for help! You also might try the comp.protocols.smb newsgroup. The SMB protocol is used by Microsoft Windows 3.11, NT and 95/98 to share disks and printers. Using the Samba suite of tools by Andrew Tridgell ( Andrew.Tridgell@anu.edu.au), UNIX (including Linux) machines can share disk and printers with Windows hosts. The smbfs tools by Paal-Kr. Engstad ( engstad@intermetrics.com) and Volker Lendecke ( lendecke@namu01.gwdg.de) enable Unix machines to mount SMB shares from Windows or Samba hosts. There are four basic things that one can do with Samba: Share a Linux drive with Windows machines. Access an SMB share with Linux machines. Share a Linux printer with Windows machines. Share a Windows printer with Linux machines. All of these are covered in this document, plus a few other odds and ends. Disclaimer: The procedures and scripts either work for the author or have been reported to work by the people that provided them. Different configurations may not work with the information given here. If you encounter such a situation, please e-mail the author with suggestions for improvement in this document. Please note that for Windows 3.x machines to access SMB shares, they must have a TCP/IP stack and the Win32s DLLs. Both of these are available on Microsoft's Web site ( http://www.microsoft.com). As of the writing of this version of the HOWTO, Microsoft are reportedly requiring a subscription to the Microsoft Software Developers Network (MSDN) to download the TCP/IP-32 stack for Windows 3.x from their Web site. Since this software used to be free, many older copies are in existance and may be acquired from friends and user group contacts. From SMB-HOWTO http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMB

Server Message Block [protocol] (IBM, Intel, MS) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMB

Small Medium Business and enterprise [market] From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMB

SMB is the protocol used by Microsoft for file and print sharing. SMB stands for Server Message Block, though that doesn't really mean anything. SMB runs on top of NetBIOS, though in Win2k it can bypass NetBIOS. History: SMB was originally developed for DOS machines. It was later upgraded so that OS/2 machines could act as servers for DOS machines. The protocol was later upgraded for Windows (Wfw = Windows for Workgroups) and Windows NT. Still later upgrades have been added for Windows 2000. This constant evolution and need for backwards compatibility has led to many security holes within the protocol. The most severe is the need for "LAN Manager" authentication. Key point: SMB is an application layer protocol and can run over many different transports, including TCP/IP. A common problem is that home-users enable SMB over TCP/IP, allowing anybody on the Internet to access their hard-disk. They should instead install a local-only transport such as NetBEUI for SMB, which will allow file access among local machines, but not remote machines across the Internet. Key point: SMB-sniffers can read the encrypted password info off the wire and send them to password crackers. From Hacking-Lexicon http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMB

Standards Managing Board (PIMA, I3C) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMB

System Management Bus From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

smb2www

A Windows Network client that is accessible through a web browser. With this package you will be able to browse a Windows Network using a standard web browser. It is based upon the samba package. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMBA

Shared Memory Buffer Architecture (Intel) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

smbcacls

Set or get ACLs on an NT file or directory names From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

smbclient

A LanManager like simple client for Unix. The Samba software suite is a collection of programs that implements the SMB protocol for unix systems, allowing you to serve files and printers to Windows, NT, OS/2 and DOS clients. This protocol is sometimes also referred to as the LanManager or NetBIOS protocol. This package contains some client components of the Samba suite. In particular it includes the command line utilities smbclient, smbtar, and smbspool. If you want to mount shares exported from Microsoft Windows machines or a Samba server you must install the smbfs package. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

smbclient

ftp-like client to access SMB/CIFS resources on servers From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

smbcontrol

send messages to smbd or nmbd processes From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

smbd

server to provide SMB/CIFS services to clients From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

smbfs

mount and umount commands for the smbfs (for kernels >= than 2.2.x) Smbfs is a filesystem which understands the SMB protocol. This is the protocol Windows for Workgroups, Windows NT or LAN Manager use to talk to each other. It was inspired by samba, the program by Andrew Tridgell that turns any unix site into a file server for DOS or Windows clients. If you want to use command-line utilities like smbclient, smbtar and/or smbspool just need to install the smbclient package. Starting with the Debian Samba packages version 2.2.0-1, the old smbfs utilities for 2.0.x have been removed. There are no wrapper scripts that call a specific smbmount/smbumount depending on the kernel version. If you are using a 2.0.x kernel please upgrade or use the latest Samba 2.0.7 Debian package. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

smbmnt

helper utility for mounting SMB filesystems From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

smbmount

mount an smbfs filesystem From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMBP

Sever Message Block Protocol From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

smbpasswd

change a user's SMB password From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

smbpasswd

The Samba encrypted password file From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

smbspool

send print file to an SMB printer From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

smbstatus

report on current Samba connections From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

smbtar

shell script for backing up SMB/CIFS shares directly to UNIX tape drives From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

smbumount

smbfs umount for normal users From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMC

SCSI-3 Medium changer Commands (SAM, SCSI) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMC

Standard Microsystems Corporation (manufacturer) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMD

Storage Module Device From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMD

Surface Mounted Device From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMD

System Management Bus (Intel) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMDAC

Single MAC Dual Attached Concentrator (FDDI, DAC, MAC) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMDI

Storage Module Disk Interconnect From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMDL

Standard Music Description Language (ISO, IEC, CD 10743) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMDR

Station Message Detail Recording From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMDR

Storage Management Data Requester (Novell, Netware, SMS) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMDS

Switched Multimegabit Data Service (BELLCORE) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMDS (Switched Multimegabit Data Service)

A standard for very high-speed data transfer. From Matisse http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMDSCNM

SMDS Customer Network Management (SMDS), "SMDS CNM" From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SME

Society of Manufacturing Engineering (org., USA) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SME

Storage Management Engine (Novell, Netware, SMS) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SME Server

Once known as e-smith, this server and gateway distribution is now owned by Mitel Networks, and called SME Server. Mitel released version 5.5 of the SME Server on July 3, 2002. The SME Server version 5.6 developer release came out January 15, 2003. SME Server 6.0 Beta 2 developer release came out June 20, 2003. From LWN Distribution List http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMF

Service Management Function (IN) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMF

Single Mode Fiberoptic cable (FDDI) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMF

Standard MIDI File (MIDI) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMFA

Special / System Management Functional Area (OSI) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMFF

Script Mathematical Formula Formatter From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMG

Special Mobile Group (GSM, org., mobile-systems) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMI

Structure and identification of Management Information (OSI, RFC 1155/1902) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMI

Sun Microsystems Inc. (manufacturer) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMI

System Management Interrupt (SMB) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMI

System Monitoring Interface (Informix, DB) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMIL

Synchronized Multimedia Integration Language (W3C, WWW) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMIME

Secure/Multipurpose Internet Mail Extensions (MIME, MS, Lotus, Qualcomm, RSA, cryptography), "S/MIME" From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMIS

Service-Marketing-InformationsSystem (MBAG) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMIT

System Management Interface Tool (IBM, AIX) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMK

Software Migration Kit From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMK

Structured Meta-Knowledge From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SML

Service Management Layer (TMN) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SML

Shared Memory Link (TCP/IP) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SML

Siemens Modular Link From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SML

Standard Machine Language From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SML

Standard Meta Language From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sml-mode

A major Emacs mode for editing Standard ML. It provides syntax highlighting and automatic indentation and comes with sml-proc which allows interaction with an inferior SML interactive loop. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMLNJ

Standard Meta Language / New Jersey, "SML/NJ" From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMM

System Management Mode (CPU) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMM

System Manager's Manual (BSD, Unix) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

smokeping

A latency logging and graphing system. SmokePing is a latency logging and graphing system. It consists of a daemon process which organizes the latency measurements and a CGI which presents the graphs. With SmokePing you can measure latency and packet loss in your network. SmokePing uses RRDtool to maintain a longterm datastore and to draw pretty graphs giving up to the minute information on the state of each network connection. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SmoothWall

SmoothWall was first released to the world in July 2000 as a hardened internet firewall device. Products include Smoothwall Server and Smoothwall GPL. Smoothwall GPL 2.0 beta1 (metro) was released August 28, 2002. Smoothwall GPL 1.0 was released December 10, 2002. Smoothwall 2.0 beta 4 was released January 24, 2003. A 'secured' distribution. From LWN Distribution List http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMP

see symmetric multi-processing (SMP). From Redhat-9-Glossary http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMP

Software Motion Picture (DEC) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMP

Symmetric MultiProcessor [system] (SMP) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMP

Symmetrisches MultiProzessor [system] From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMP

System Modification Program From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMP (Symmetric Multi-Processing)

From Linux Guide @FirstLinux http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMPC

Shared Memory Parallel Computer (HPC) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

smpeg-config

script to get information about the installed version of SMPEG From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

smpeg-gtv

SMPEG GTK+ MPEG audio/video player SMPEG (SDL MPEG Player Library) is a free MPEG1 video player library with sound support. Video playback is based on the ubiquitous Berkeley MPEG player, mpeg_play v2.2. Audio is played through a slightly modified mpegsound library, part of splay v0.8.2. SMPEG supports MPEG audio (MP3), MPEG-1 video, and MPEG system streams. This package contains a GTK+ player called gtv. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

smpeg-plaympeg

SMPEG command line MPEG audio/video player SMPEG (SDL MPEG Player Library) is a free MPEG1 video player library with sound support. Video playback is based on the ubiquitous Berkeley MPEG player, mpeg_play v2.2. Audio is played through a slightly modified mpegsound library, part of splay v0.8.2. SMPEG supports MPEG audio (MP3), MPEG-1 video, and MPEG system streams. This package contains a command line player called plaympeg. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

smpeg-xmms

SDL MPEG Player Library - XMMS plugin SMPEG (SDL MPEG Player Library) is a free MPEG1 video player library with sound support. This package contains an XMMS plugin for playing MPEG movies. It supports hardware acceleration, seeking in movies, fullscreen mode, a resizeable window and VideoCD support. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

smproxy

Session Manager Proxy From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMPTE

Society of Motion Picture and Television Engineers (org.) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMPU

Switch Module Processor Unit From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMR

Source Maintainability and Reliability From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMR

Specialized Mobile Radio [systems] From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

smrsh

SendMail Restricted SHell: the shell that Sendmail uses to execute programs. smrsh puts restrictions on the programs that can be run to make it safer than using a regular shell such as the Bourne Shell. From Linux Guide @FirstLinux http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMRT

Signal Message Rate Timing From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMS

Service Management System From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMS

Short Message Service (GSM, mobile-systems) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMS

Storage Management Services (Novell, Netware) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMS

System Management Server (MS) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMS

System-Managed Storage From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sms-pl

Send SMs via Polish GSM operators This program allows you to send SMs (Short Messages - incorrectly being called SMSes) to mobile phones operated by three Polish GSM operators: Era, Plus and Idea. It sends the messages via web-to-SMS gateways by spoofing a web browser. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMSAC

Society of Management Science and Applied Cybernetics (org., India) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMSC

Short Message Service Center (SMS, GSM, mobile-systems) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMSCB

Short Message Service Cell Broadcast (SMS), "SMS CB" From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMSCEMI

Short Message Service Center External Machine Interface [protocol] (SMS) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

smsclient

A program for sending short messages (SM / SMS) smsclient is a tool for sending short messages (SM - often false named SMS). SM can be sent to mobile phones. Additional some paging systems are supported by this tool. smsclient supports the common protocols UCP, TAP and some other. Out of the box there is preconfigured support for many local services, but smsclient can be easily extended to support other systems. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMSP

Storage Management Services Protocol (Novell, SMS) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

smssend

Utility to send SMS messages to GSM mobile phones smssend is a small command line utility to send SMS messages to GSM mobile phones via a web to SMS gateway. Web to SMS gateways are scriptable. this package includes scripts for many common sms web gateways. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

smstools

SMS Server Tools for GSM modems The SMS Server Tools make your server into a central SMS gateway. You can send and receive SM using a simple file-based interface. This Software was made for users who send less than 20 000 messages each month. There is an event-handler option that allows you to call your own programs or scripts after sent or received SM. The SMS Server Tools use one or more (max. 32) GSM modems to send and receive SM. You can equip some modems with Vodafone SIM cards and other with Telmi SIM cards (for example), to save money. All SM are sorted in queues by provider. If one modem fails it will be deactivated for one hour before the software retries. The other modems run without any restriction. You can log status information and alarms using the syslog daemon of your operating system. Upstream URL: http://www.isis.de/members/~s.frings/smstools/ From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMT

Segment Table Map From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMT

Shared Memory Transport (X-Windows) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMT

Station ManagemenT (FDDI) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMT

Surface-Mount Technology From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMTA

Subordinate Message Transfer Agent (MTA) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

smtm

Show Me The Money is a configurable Perl/Tk stock ticker program smtm, which is a not overly clever acronym for Show Me The Money, is a simple stock ticker application. It creates and automatically updates a window with stock quotes from Yahoo! Finance. When called with one or several stock symbols, it displays these selected stocks, and also records the symbols for later use. When smtm is called without arguments, it reads the symbols tickers from a (default or specified) file. This file can be created explicitly by calling the Save option from the File menu, or implicitly whenever smtm is called with one or more symbols. smtm is fully configurable -- it can display the stock symbol and the full name of the company, the price change, the percentage change, the volume traded, the profit or loss, the value of the holding, the length of the holding period as well as annualised percentage returns. The display can be sort on almost any of the columns. Losers are flagged in red. smtm can be used for North American equities, as well as European and Australian/NZ ones. It should work for other markets supported by Yahoo! Finance. The quotes are delayed, typically 15 minutes for NASDAQ and 20 minutes otherwise, see Yahoo! Finance for details. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMTP

An acronym for Simple Mail Transport Protocol, which defines the mechanism for exchanging mail across a network. This protocol is described in RFC number 821. From KADOWKEV http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMTP

see simple mail transfer protocol (SMTP). From Redhat-9-Glossary http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMTP

Simple Mail Transfer Protocol (RFC 821, TCP/IP) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMTP (Simple Mail Transfer Protocol)

Key point: Virtually all e-mail exchanged on the Internet is through SMTP. Key point: The most common exploits for SMTP involve spammers trying to relay mail through high-speed mail servers. From Hacking-Lexicon http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMTP (Simple Mail Transfer Protocol)

SMTP is the Internet standard for the transferring of electronic mail messages. An SMTP server acts as a central 'post office' for addressing mail to all users within wide area and local area networks. From Faculty-of-Education http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMTP (Simple Mail Transfer Protocol)

The main protocol used to send electronic mail from server to server on the Internet. SMTP is defined in RFC 821 and modified by many later RFC's. From Matisse http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

smtp-refuser

Simple spam-block with refusal message Smtp-refuser can be configured to reject mail from specific hosts (or that satisfy other tcpd hosts.allow or similar rules), returning a meaningful message including the reason it was bounced and a local phone number. Because spam often has a bad envelope-from, (and because this is more efficient), we bounce it with an error message during the SMTP transaction, rather than send bounce mail later. This SMTP refuser is used along with "tcpd" or (another TCP security daemon) to bounce messages from the IP addresses of known spammers. The advantage of this over just blocking the connection is that the remote SMTP server will not retry, and a legitimate e-mail sender will get a polite message telling them why their mail was blocked and whom to call to get around the blocking. Mail that is not blocked by smtp-refuser is delivered to your standard mail transport agent. Other, more automated solutions such as RBL and ORBS (supported by most of the mail transfer agents), have become available since smtp-refuser was written, but this may still be of interest to you. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

smtpd

Mail proxy for firewalls with anti-spam and anti-relay features Smtpd uses two programs, smtpd which listens for incoming mail and places it in a private queue, and smtpfwdd, which invokes sendmail to deliver messages from the queue. The configuration file for smtpd has powerful features for controlling the acceptance of incoming mail. It is particularly useful for firewall sites, where the policy aspects of which mail should be accepted (in smtpd's configuration file) are clearly separated from the routing and other aspects of the mail configuration (which remain in the sendmail configuration file) It can be used with any mail-transport-agent which can be invoked as sendmail but is intended to integrate with the Debian sendmail package, which recognises when smtpd has been installed. If you are attempting to use it with an MTA other than sendmail then you will need to be prepared to modify the MTA configuration. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

smtpfeed

SMTP feed -- SMTP Fast Exploding External Deliver for Sendmail Smtpfeed is a SMTP delivery agent which is called by sendmail, and it improves required time to complete delivery of copies of a message to recipients of huge number. Note that smtpfeed still in ALPHA testing release. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMUG

Seldom Met Users Group [book] (HP, HP 3000) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

smurf

A SoundFont editor for Linux / *nix Smurf is a sound font editor. Sound font files are a collection of audio samples and other data that describe instruments for wavetable sound cards. Smurf currently supports the AWE 32/64 and has limited support for the GUS/SoftOSS driver which can use any OSS supported 16 bit sound card. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

smurf

An exploit that sends a ping to a broadcast address using a spoofed source address. Everyone on the target segment responds to the source address, thereby flooding it with traffic. From Hacking-Lexicon http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SMUX

SNMP MUltipleXing protocol (SNMP, MUX, RFC 1227) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SN

Sequence Number From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SN

Serial Number From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sn

Small NNTP server for leaf sites sn is a small news system for small sites serving perhaps a few dozen newsgroups, and with a slow connection to the internet. It is similar to leafnode (ftp.troll.no, by Arnt Gulbrandsen). The target user is a home or SOHO with a single modem connection to the Internet, maybe running IP masq or similar, and serving a few workstations. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SN

Subscriber Number (MS-ISDN, GSM, mobile-systems) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SNA

Systems Network Architecture (IBM) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

snac

A relatively complete algebraic calculator for GNOME. SNAC is a calculator for X using the GNOME libraries. It provides a decent set of functions, similar to what you would find on a low-end scientific calculator. While not very complex it's quite useful and is the best simple calculator I've found for X using the GNOME libraries. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SNAC

SNA Network Access Controller (SNA, SDLC, IDS) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SNAC

SubNetwork ACcess [functions] From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

snacc

ASN.1 to C or C++ or IDL compiler Snacc is short for "Sample Neufeld ASN.1 to C Compiler" and ASN.1 stands for Abstract Syntax Notation One (ITU-T X.208/ISO 8824). Snacc supports a subset of ASN.1 1988. If you need features of ASN.1 1992 or later, snacc is not for you. Given an ASN.1 source file(s) snacc can produce: 1. C routines for BER encoding, decoding, printing and freeing. 2. C++ routines for BER encoding, decoding, and printing. 3. A type table that can be used with C driver routines for BER encoding, decoding, printing and freeing. If you want to build snacc based applications, you want to install the libsnacc-dev package, too. Your application will then depend on the snacc libraries, you find in the libsnacc0 package. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SNACP

SubNetwork ACcess Procedure (ISO, IS 8648, SNAC), "SNAcP" From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SNACP

[PPP] Systems Network Architecture Control Protocol (PPP, SNA, RFC 2043) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SNADS

Systems Network Architecture Distribution Service (IBM, CCS) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SNAFU

Situation Normal All Fouled Up (slang) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SNAIP

[advanced] Systems Network Architecture/Internet Protocol (SNA, IP, RFC 1538), "SNA/IP" From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

snake4

Snake game This is a basic but nice implementation of the snake game. The objective is to "snake around" and eat fruit, while avoiding the evil headbanger and not crashing into your tail. Features five levels of difficulty and a site-wide high score list. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

snap

A Perl-based console Napster client Snap is a small, Perl-based, command-line Napster client written with the Perl Curses bindings. It is designed to be small yet fully functional, while providing a powerful scripting environment through the use of Perl. Snap supports full song searching/browsing with regular expression filtering, multiple simultaneous uploads and downloads with upload speed throttling, resume support, chatting, hotlists, all Napster admin commands including Opennap extensions, alternate server and metaserver support, and much more. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SNAP

SubNetwork Access Protocol (LAN, ethernet) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SNAP

SubNetwork Attachment Point (IEEE 802.1a) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SNAP

System and Network Administration Program From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SnapGear Embedded Linux

SnapGear Embedded Linux is a 100% free distribution supporting several processors (with an emphasis, perhaps, on MMU-less processors - the principal developers of uClinux are at SnapGear). SnapGear adds development expertise, toolchain, library and multi-architecture support to create a complete embedded development environment. The initial release is dated April 16, 2003. From LWN Distribution List http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

snappea

A program for creating and studying hyperbolic 3-manifolds. SnapPea is Jeff Weeks' computational tool for mathematicians working in low-dimensional topology. It is used for creating and studying hyperbolic 3-manifolds, and is accessible via Python scripts as well as through a traditional graphical user interface. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

snarf

A command-line URL grabber Snarf is a utility retrieve files via the http and ftp protocols. It supports http redirect, http and ftp resume, http and ftp authentication, and other neat things. Its functionality is similar to that of wget, but with a much smaller binary. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SNCP

Single Node Control Point (IBM, SNA) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

snd

Sound file editor Snd is a powerful sound file editor that can be customized and extended using the Scheme programming language. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SNDC

SubNetwork Dependent Convergence [functions] (OSI) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sndconfig

Easy soundcard configuration Sndconfig is a utility that lets you configure your soundcard easily. It was written originally for RedHat Linux, but now it is available for Debian GNU/Linux, too. Sndconfig uses isapnp to detect common soundcards and writes a isapnp configuration to and module control lines for use with your sound card. It requires a kernel with OSS sound modules to be present. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SNDCP

SubNetwork Dependent Convergence Procedure (ISO, IS 8648, OSI, SNDC) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SNEPS

Semantic NEtwork Processing System (GNU, LISP), "SNePS" From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SNF

Server Natural Format (Fonts, X) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SNF

Shared Network Facilities From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SNG

Satellite News Gathering From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SNI

Siemens Nixdorf Informationssysteme [AG] (manufacturer) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SNI

SNA Network Interconnection (IBM, VTAM, SNA) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SNI

Subscriber Network Interface (SMDS) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SNIA

Storage Networking Industry Association (org., NAS, SAN) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SNIC

SubNetwork Independent Convergence [functions] (OSI) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

snice

report process status From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SNICP

SubNetwork Independent Convergence Procedure (ISO, IS 8648, OSI, SNIC) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sniff

v.,n. 1. To watch IP packets traversing a local network. Most often in the phrase `packet sniffer', a program for doing same. 2.Synonym for poll. From Jargon Dictionary http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sniffer (sniffing, packet sniffer)

A wiretap that eavesdrops on computer networks. Key point: You have be between the sender and the receiver in order to sniff traffic. This is easy in corporations using shared media, but practically impossible with an ISP unless you break into their building or be an employee. Key point: Sniffers are frequently used as part of automated programs to sift information off the wire, such as clear-text passwords, and sometimes password hashes (to be crack). Further reading: http://www.robertgraham.com/pubs/sniffing-faq.html. From Hacking-Lexicon http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sniffit

packet sniffer and monitoring tool sniffit is a packet sniffer for TCP/UDP/ICMP packets. sniffit is able to give you very detailed technical info on these packets (SEC, ACK, TTL, Window, ...) but also packet contents in different formats (hex or plain text, etc. ). From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SNL

Sandia National Laboratories (org., USA) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

snmp

NET SNMP (Simple Network Management Protocol) Apps. The NET SNMP applications allow querying the NET and other SNMP agents. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SNMP

Simple Network Management Protocol (RFC 1157/1902, TCP/IP, IETF) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SNMP

Simple Network Management Protocol. An Internet protocol. Allows nodes to determine which services another nodes offer. From Linux Guide @FirstLinux http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SNMP (Simple Network Management Protocol)

A method for keeping track of various hardware devices, such as printers, connected to a network. SNMP can tell network administrators when printers are low on paper or toner, or when a paper jam has occurred. SNMP seems destined to be replaced by die Microsoft at Work standard or the Desktop Management Interface (DMI) standard. From QUECID http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SNMP (Simple Network Management Protocol)

A set of standards for communication with devices connected to a TCP/IP network. Examples of these devices include routers, hubs, and switches. http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SNMP (Simple Network Management Protocol)

The Internet infrastructure is composed of lots of hardware scattered around the place. SNMP is the method that allows someone to "manage" all that equipment. By the word "manage" I mean do things like monitor the amount of traffic flowing through the equipment, trigger when faults occur, change the configuration of equipment remotely, and so forth. Key point: Most equipment comes with default passwords (aka. community strings) of public and private. These allow you to read information from the device (traffic, temperature, voltage, etc.) and re-configure it. Key point: A common technique is to traceroute to a victim's dial-up machine thereby discovering the IP address of the hardware they've dialed into. Then, you can send SNMP commands with the "private" community strings telling the hardware to hang-up on the victim. Also, spammers have used this technique to find the true login name of the user. From Hacking-Lexicon http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SNMP is defined in RFC 1089. From Matisse

http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

snmpd

NET SNMP (Simple Network Management Protocol) Agents. The NET SNMP agent allows remote monitoring of various network and system information. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

snmptrapfmt

A configurable snmp trap handler daemon for snmpd. This package contains a configurable snmp trap handler daemon for snmpd. The output of this trap handler daemon may be specified via a configuration file and written to a logfile or to the syslog daemon. During installation of this package, the configuration file for the snmptrapd daemon is changed (old version is saved) to activate the trap handler. The snmpd and snmptrapd daemons are restarted. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SNNS

Stuttgart Neural Network Simulator (IPVR, NN) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SNOBOL

StriNg Orientated symBOlic Language From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

snooper

Captures communication between two external serial devices Snooper passes data transparently between two serial (RS232C) devices, capturing and logging the data and occasional comments you want to insert into the logs. It is useful for debugging or analyzing the communications protocol between two devices that would normally be connected directly to each other, e.g. a digital camera and a personal computer. By sitting "in the middle" (after you connect the two devices to serial ports on your Linux machine) snooper is able to capture data traveling in either direction while also passing it unmodified to the other device. It is also possible to operate with a single serial device, using your console and keyboard as the second device. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

snoopy

An execve() wrapper and logger snoopy is merely a shared library that is used as a wrapper to the execve() function provided by libc as to log every call to syslog (authpriv). system administrators may find snoopy useful in tasks such as light/heavy system monitoring, tracking other administrator's actions as well as getting a good 'feel' of what's going on in the system (for example apache running cgi scripts). From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

snort

Flexible NIDS (Network Intrusion Detection System) Snort is a libpcap-based packet sniffer/logger which can be used as a lightweight network intrusion detection system. It features rules based logging and can perform content searching/matching in addition to being used to detect a variety of other attacks and probes, such as buffer overflows, stealth port scans, CGI attacks, SMB probes, and much more. Snort has a real-time alerting capability, with alerts being sent to syslog, a separate "alert" file, or even to a Windows computer via Samba. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

snowflake

An interactive snowflake generator. In addition to generating pretty snowflake patterns, the code for this program, as originally conceived by Raph Levien was an exercise in cryptography. The bit pattern from an ordinary ASCII string or a hexadecimal key can be used to generate a unique snowflake. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SNP

SubNetwork Protocol From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SNPA

Sub-Network Point of Attachment From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SNPP

Simple Network Paging Protocol (RFC 1861, SMS) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SNR

Serial NumbeR (IMEI, GSM, mobile-systems) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SNR

Signal-to-Noise Ratio From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SNRM

Set Normal Response Mode (SDLC, HDLC, ADDCP, LAPB) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SNRME

Set Normal Response Mode Extension (SNRME) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SNS

Secure Network Server From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sntop

A curses-based utility that polls hosts to determine connectivity. Simple network top (sntop) is a curses-based console utility, in the spirit of top, that polls network hosts at a regular interval to determine their connectivity and displays the results in a pretty format. Advanced features, such as automatic HTML generation of results, secure terminal mode, execution of external file on connectivity change, and user/system configure files, are supported. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SNTP

Simple Network Time Protocol (RFC 2030) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SOA

Start Of Authority record (DNS) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SOA

State Of the Art (slang) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SOA (Start of Authority)

In DNS, the SOA record is the "root" record for a domain (or "zone"). Hack: If you control the SOA for a reverse mapping, you can spoof the reverse lookup for an IP address. Let's say that you controlled the DNS server for 132.2.0.192.in-addr.arpa, you can choose to return any domain name you want. This can be used to subvert a number of systems that rely upon reverse lookups, such as older /etc/hosts.equiv files (specifically, the older istrusted() function call). From Hacking-Lexicon http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SOAP

Simple Object Access Protocol (W3C, XML, HTML) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SOAP

Symbolic Optimizer and Assembly Program From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SOB

Start Of Block From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SOC

System-On-a-Chip From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SOC

Systems and Option Catalog From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

social engineering (con, human engineering)

Social engineering is a form of hacking that targets people's minds rather than their computers. A typical example is sending out snail mail marketing materials with the words "You may already have won" emblazoned across the outside of the letter. As you can see, social engineering is not unique to hackers; it's main practitioners are the marketing departments of corporations. Key point: The classic example is to pretend to be from a company's computer department and call up a user asking for their password. Sophisticated hacks will first try to make the victim uncomfortable (i.e. "We've detected improper use of your account..."), then offer them the opportunity to be very helpful ("I'm sure we can check this out now and not involve your boss."). The technique often works well in reverse: call up the computer support department and tell them you've lost your password. This works especially well in companies that have policies requiring you to change your password -- people forgetting passwords on really old accounts are frequent, so support departments are deluged with such requests, so it's easy to slip one past them. Key point: Know as much about your victim as possible. If you are emulating something, try to find the answers to typical questions you will be asked. Key point: If all else fails, try stupidity. If you are a foreigner, pretend not to speak the language well. Likewise, females have certain advantages in male-dominated cultures. Example: For members-only access, please create an account: Username: Password: Confirm: People often choose the same password for everything. For example, put in your website the prompt shown to the right. A lot of users will use the same username/password for this that they use for websites like Hotmail, Yahoo mail, or Netscape mail. This will therefore sift valid e-mail accounts from people who visit your site. In a similar manner, these passwords might be useful within the companies they work for as well. Key point: Newbies are favorite victims of social-engineering attacks in chat rooms. Hackers go after people who appear to be unsure of themselves online. Key point: Many hackers do not consider social-engineering a "real" attack because it doesn't require extensive technical knowledge in order to pull off. From Hacking-Lexicon http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

Socket

An Internet address that combines an IP address (the four-part numerical addrss that uniquely identifies a prticular computer on the Internet) and a port number (which identifies a prticular Internet application, such as File Transfer Protocol [FTP], Gopher, or the World Wide Web [WWW]). See well-known port. From QUECID http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

socket

Multi purpose socket tool The socket program is a simple tool for socket based connections. It can be used to create simple daemons (in both standalone and inetd mode), to connect to other daemons or to redirect ports. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sockets / WinSock

In programming, the "sockets" interface is the most common way that coders use to access the network. Sockets works by creating a "file handle" that when written to, sends data over the network rather than to a file on the hard-disk. Contrast: Other interfaces programmers could use are higher-level abstractions like RPC, or lower-level "raw" interfaces like libnet. Contrast: Sockets originally came from UNIX, but has been ported to other platforms. In particular, the "WinSock" variant for Windows includes both the UNIX-style functions as well as the Windows-style functions. It is possible to write sockets-based programs that compile for both platforms. Key point: The name "sockets" comes from the TCP/IP term "socket". A socket is minimum information necessary needed to communication on the network: the source/destination IP address, the source/destination port, and the transport protocol (UDP or TCP). From Hacking-Lexicon http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SOCKS

SOCKet Secure From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SOCKS

SOCKS is a service that allows internal machines behind a firewall/proxy/gateway access to the Internet. Rather than talking to the target machine, clients communicate with the SOCKS server and ask it to relay data to the target machine out on the Internet. Most web-browsers and FTP clients have SOCKS support built in; SOCKS clients can also be installed on client computers to automatically redirect traffic through the socks gateway. Key point: SOCKS servers are frequently misconfigured allowing both outside and inside people to use them. This means that if a hacker wants to hide where they come from, the hacker scans the Internet for SOCKS proxies, then funnel their data through the proxies they find. When victims trace back to the hacker's IP address, they find the open SOCKS server instead. Key point: Abuse through SOCKS servers has become so common on IRC networks that many of them (dalnet, undernet) have begun scanning clients to see if they are running an open SOCKS proxy. They deny access to anybody coming into the networks through such a proxy. Note that users can still use closed proxies (i.e. those available only to internal users). Key point: SOCKS servers listen by default on TCP port 1080. Real world: Most browsers support SOCKS, which you can see in the "proxy" settings configuration tab. You can download generic SOCKS clients and servers from http://www.socks.nec.com/. SOCKS v5 is specified in RFRC 1928. From Hacking-Lexicon http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

socks4-clients

Socks4 enabled clients as rtelnet, rftp, ... This is version 4.3 of SOCKS, a package that allows Unix hosts behind a firewall to gain full access to the internet without requiring direct IP reachability. It does require a SOCKS server program being run on a hosts that can communicate directly to hosts behind the firewall as well as hosts on the Internet at large. It is based on the original SOCKS written by David Koblas <koblas@netcom.com>. This package includes SOCKSified client programs of finger, ftp, telnet, and whois. A few other SOCKSified clients may be found on ftp.nec.com, in directory /pub/security/socks.cstc. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

socks4-server

SOCKS4 server for proxying IP-based services over a firewall This is version 4.3 of SOCKS, a package that allows Unix hosts behind a firewall to gain full access to the internet without requiring direct IP reachability. It does require a SOCKS server program being run on a hosts that can communicate directly to hosts behind the firewall as well as hosts on the Internet at large. It is based on the original SOCKS written by David Koblas <koblas@netcom.com>. This package includes the SOCKS server. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SOCO

Service Office/Central Office, "SO/CO" From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SODA

Simplified OS for Distributed Applications (OS) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SODA

System Optimization and Design Algorithm From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SODIMM

Small Outline Dual Inline Memory Module (DRAM, DIMM) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sodipodi

Vector based drawing program. It loads and saves subset of SVG (Scalable Vector Graphics) format, a standard maintained by the WWW consortium. Sodipodi user interface should be familiar from CorelDraw and similar drawing programs. There are rectangles, ellipses, text items, bitmap images and freehand curves. As an added bonus both vector and bitmap objects can have alpha transparency and can be arbitrarily transformed. Sodipodi supports multiple opened files and multiple views per file. Graphics can be printed and exported to png bitmaps. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SODIS

SOftware Dokumentations- und InformationsSystem From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SOE

Standard Operating Environment From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SOE

Standards of Excellence From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

soelim

interpret .so requests in groff input From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SOEP

Secondary Operand Execution Pipeline (Motorola, CPU), "sOEP" From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SOFABED

[davenport] Standard Open Formal Architecture for Browsable Electronic Documents From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

Soft Links

To demonstrate a soft link, try the following: touch myfile; ln -s myfile myfile2; ls -al; cat > myfile; a few lines of text; ^D; cat myfile; cat myfile2; Notice that the ls -al listing has the letter l on the far left next to myfile2, and the usual - next to myfile. This indicates that the file is a soft link (also known as a symbolic link or symlink) to some other file. A symbolic link contains no data of its own, only a reference to another file. It can even contain a reference to a directory. In either case, programs operating on the link will actually see the file or directory it points to. One of the common uses of symbolic links is to make mounted (see Section 19.4) file systems accessible from a different directory. For instance, you may have a large directory that has to be split over several physical disks. For clarity, you can mount the disks as /disk1, /disk2, etc., and then link the various subdirectories in a way that makes efficient use of the space you have. Another example is the linking of /dev/cdrom to, say, /dev/hdc so that programs accessing the device file /dev/cdrom (see Chapter 18) actually access the correct IDE drive. From Rute-Users-Guide http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

software bloat

n. The results of second-system effect or creeping featuritis. Commonly cited examples include ls(1), X, BSD, Missed'em-five, and OS/2. From Jargon Dictionary http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SOH

Section OverHead From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SOH

Start Of Header From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SOHO

Small Office / Home Office [market] From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SOI

Silicon-On-Insulator [technology/wafer] (IC, IBM) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SOIF

Summary Object Interchange Format (WWW) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SOJ

Small-Outline J-lead [chip] (IC, DRAM) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SOL

Simulation-Oriented Language From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

solarwolf

Collect the boxes and don't become mad Solarwolf is an action/arcade game written entirely in Python, featuring amazing graphics and cool music. It is is originally based on the SolarFox game on the Atari 2600. All this, yet the best feature of all is; it is a hecka lotta fun! The point of the game is to scramble through 48 levels of patterns, collecting all the boxes. The part that makes it tricky is avoiding the relentless hailstorm of fire coming at you from all directions. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

solfege

Ear training program for GNOME GNU Solfege is an ear training program for X Window written in python, using the GTK+ and GNOME libraries. Ear training is a big subject with many connections to music theory and performance of music, so I won't even try to make "a complete computer-based eartraining course". But I hope someone find this software useful. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

solid-pop3d

POP3 server supporting Maildir, PAM, vhosting The Solid POP3 Server is an implementation of a Post Office Protocol version 3 server that has flexibility as its main goal. The server is easily configurable and has support for features such as: - APOP authentication scheme - virtual hosting - maildir and mailbox handling - bulletins - expiration of messages From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SOLSA

Support of Localized Service Areas (ETSI), "SoLSA" From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SOM

Self-Organizing Machine From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SOM

Structured Object Method From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SOM

System Object Model (IBM, ORB, CORBA) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SONDS

Small Office Network Data System From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SONET

Synchronous Optical NETwork (FDDI, ATM) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sonicmail

email notifier GNOME applet Sonicmail is a POP3 email notifier GNOME applet. It will notify you when you receive new emails by displaying a selectable icon in the applet. Also, optionally, a sound may be played. Sonicmail is fully configurable. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SOP

Standard Operating Procedure From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

Sorcerer

This distribution was created by the original Sorcerer GNU/Linux author, Kyle Sallee. Sources are downloaded directly from software authors' homepages and mirrors. Then, they are compiled with the architecture and optimizations that the system administrator specifies. Finally, it is installed, tracked, and archived for easy removal and upgrades. Sorcerer has both both command line and menu driven package mangement programs. A public beta, not backward compatible with previous releases of SGL, was made available April 14, 2002. From LWN Distribution List http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

Sort

An operation that rearranges data so it is specified ascending or descending order, usually alphabetically or numerical. From QUECID http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sort

sort lines of text files From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sortmail

a simple mail sorter sortmail is a simple mail sorter you can use in your .forward to sort your mail into folders automatically, delete unwanted mail, etc. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SOS

Share Operating System (OS) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SOS

Sophisticated Opearting System (OS, Apple) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SOS

Standards and Open Systems From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SOS

Support On Site From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SOS

Symbolic Operating System (OS) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SOSP

System Operational and Support Plan From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SOT Linux

SOT Finnish Software Engineering Ltd. provides a very popular distribution (once known as Best Linux) with excellent language support for many languages. SOT Linux 2002 was released April 24, 2002. From LWN Distribution List http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SOTA

State of the Art (slang) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sound-recorder

Direct-to-disk recording and play-back programs. sound-recorder is a direct-to-disk recording program. It uses the recording input from the mixer on your soundcard and records it to a file cdsound-recorder is an enhancement to sound-recorder which makes it easy to record tracks or samples from a cdrom to a file. With the play-sample program you can play the recorded audio or play all other non-compressed and compressed wave-files. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

soundgrab

play a raw audio file and interactively select and save pieces From the perl department of the Maximegalon museum of diseased imaginings. soundgrab is a script that lets you interactively select and save your favorite parts of a raw audio file to other files via a command line interface. It does this by providing you with the basic commands you would expect from an audio cassette deck (play, stop, ff, rw) plus some additions: mark, which places a marker at the current position of the head, and export, which saves the audio data between the mark and the current head position to a file you specify in wav, cdr (cd mastering), raw data, flac, or ogg format. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

soundmodem

Sound Card Amateur Packet Radio Modems This package contains the driver and diagnostic utility for the userspace SoundModem suite by Thomas Sailer. This package allows you to use any soundcard supported by the kernel as an Amateur Packet Radio modem. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

soundtracker

Sound module editor/player. Supports .xm modules, .xi instruments. Soundtracker is a module tracker for the X Window System and Gnome similar to the DOS program `FastTracker', i.e. the user creates music by rearranging sound samples into `tracks'. For more information about tracking, see http://www.united-trackers.org/ From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

source

n. [very common] In reference to software, `source' is invariably shorthand for `source code', the preferred human-readable and human-modifiable form of the program. This is as opposed to object code, the derived binary executable form of a program. This shorthand readily takes derivative forms; one may speak of "the sources of a system" or of "having source". From Jargon Dictionary http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

Source code

In a high-level programming language, the typed program instructions that progammers write before the program is compiled or interpreted into machine language instructions the computer can execute. From QUECID http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

Source Code

Programming commands in their raw state as input by a programmer. Some programming languages allow the commands to be executed on the fly by a program interpreter. Other languages require the commands to be compiled into executable programs (binaries) before they can be used. In the UNIX/Linux world, some software is distributed as source code only; other packages include both source and binaries; still others are distributed in binary format only. From I-gloss http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

source code

Specially written instructions by a software programmer to create executable programs when run through a compiler or language interpreter. From Redhat-9-Glossary http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

source code

The form in which a computer program is written by the programmer. Source code is written in some formal programming language which can be compiled automatically into object code or machine code or executed by an interpreter. From Linux Guide @FirstLinux http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

Source Mage GNU/Linux

Currently called Source Mage GNU/Linux, this project was created by members of the Sorcerer GNU/Linux team after that project was pulled by its creator in March 2002. Sorcery 0.1.3 was released into cvs on March 26, 2002. An up-to-date, working test ISO was released May 30, 2002. Sorcery version 0.8.0.1 was released August 25, 2002. From LWN Distribution List http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

source route

In network network protocols, source routing is the capability whereby the sender can specify the route a packet should take. Analogy: Somebody asks you how to get to the freeway. You can give them two responses: You tell them to drive a little further on, and there will be signs pointing to the freeway. You tell them just to follow the signs. This is normal routing: you simply hand the packet off to the routers, and let them worry about which direction the packet takes. You tell them to drive up 3 blocks, turn left, then go 2 blocks, then turn right, then go one more block and bear left onto the onramp. This is source routing: you tell the packet every hop it should take through the network. Key point: The hacker can give the packets routes that go around firewalls. From Hacking-Lexicon http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SourceForge

A new phenomenon in the free software community is the SourceForge web site, http://www.sourceforge.net/. Developers can use this service at no charge to host their project's web site, FTP archives, and mailing lists. SourceForge has mushroomed so rapidly that it has come to host the better half of all free software projects. From Rute-Users-Guide http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sourceforge

Integrated development project framework This package provides many services a development project can use, such as bug-tracking, task management, mailing-lists, CVS repository, forums, support request helper, web page / FTP hosting, release management, etc. All these services are integrated into one web site. They are managed via a nice web interface. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sourcenav

Source code analysis, editor, browser and build tool. Source-Navigator is a source code analysis tool which lets users to edit, browse and build their projects. With it, you can edit your source code, display relationships between classes and functions and members, and display call trees. You can also build your projects, either with your own makefile, or by using Source-Navigator's build system to automatically generate a makefile. Source-Navigator works with the Insight GUI interface for GDB. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sox

A universal sound sample translator. SOX (SOund eXchange) is a generic utility for translating sound files from one format to another, possibly performing a sound effect at the same time. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SOX

Sound EXchange [software] From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sox

SoX (Sound eXchange) is a sound file format converter for Linux, UNIX and DOS PCs. The self-described 'Swiss Army knife of soundtools,' SoX can convert between many different digitized sound formats and perform simple sound manipulation functions, including sound effects. Install the sox package if you'd like to convert sound file formats or manipulate some sounds. From Mandrake 9.0 RPM http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sp

James Clark's SGML parsing tools This package is a collection of SGML/XML tools called SP. These tools are used to parse, validate, and normalize SGML and XML files. The central programs included in this package are 'nsgmls', which replaces sgmls, 'spam', 'spent', 'sgmlnorm', and 'sgml2xml'. Author: James Clark <jjc@jclark.com> Homepage: http://www.jclark.com/sp/ From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SP

Service Pack (MS, Windows NT) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SP

Service Provider (DMI) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SP

Signal Processor From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SP

SPare (IMEI, GSM, mobile-systems) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SP

Speculative Precomputation From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SP

Speech Processing From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SP

Stack Pointer [register] (CPU, Intel, assembler) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SP

Structured Programming From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SP

System Product From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SPA

Software Publishers Association (org., USA) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

space-orbit

A 3D space combat simulator Orbit is a 3D space combat simulator. It features realistic Newtonian physics and actual images of the planets. In Orbit, you can fly your space ship to explore the planets and moons of the solar system, or if you're feeling like some action, you can hunt down and destroy alien invaders. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

spacechart

Star map viewer and navigator SpaceChart is a program to display 3d maps of stars and move freely around it. It is capable of showing only a subset of the stars in a given data file, and only those within a given distance of the center of the display. Also, it shows lines between stars that are closer than a given distance. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SPADE

Statistical Packet Anomaly Detection Engine (Snort, IDS) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SPAG

[european] Standards Promotion and Application Group (org., manufacturer, Europe) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

Spaghetti code

A poorly organised prorgam that results from excessive use of GOTO statements, making the program almost impossible to read and debug. The cure is to use a well-structured programming language, such as QuickBASIC, C, or Pascal, that offers a full set of control structures. See structured programming From QUECID http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

spam

A popular canned meat product. Also, sending unwanted messages to a public forum, possibly a reference to the famous Spam sketch Spam Sketch by Monty Python. From KADOWKEV http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

spam

an SGML markup stream editor From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

spam

Most spam comes through open SMTP relays. Spam is generally sent through the SMTP mail transfer protocol, though spammers are increasingly making use of web-based e-mail. A big source of spam comes from people who spider websites looking for web-pages that contain e-mail addresses. Since a lot of a web-sites will archive mailing lists and USENET groups, posting to a "private" list will often still expose your e-mail address. The SirCam worm of 2001 spidered the HTML files on the local web-browser cache to forward e-mail, creating a hugely effective manner for discovering new e-mail addresses. Spammers will usually spoof their e-mail address -- you can virtually never reply to the "sender" e-mail address. Netiquette: Use Bcc to send to multiple recipients rather than Cc: or To: fields in order to avoid exposing friends e-mail addresses to potential spammers. Firewalls don't block spam. The @Home cable modem ISP now regularly scans its customers for open USENET relays that spammers often hijack in order to forward spam on newsgroups. Some people are so emotionally against spam that they will will completely shun all access from networks known to be sources of spam. Websites will sometimes scan clients with SNMP or NetBIOS in order to discover their login name. Likewise, some websites sift HTTP fields for usernames (though virtually all web-browsers have disabled this feature). A Rumpelstiltskin attack is where a spammer sends e-mail to all possible names (a@example.com, b@example.com, c@example.com, ...) at a domain. This is similar to a brute-force attack. From Hacking-Lexicon http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SPAM

see superfluous pieces of additional mail (SPAM). From Redhat-9-Glossary http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SPAM

Send Phenomenal Amounts of Mail (Usenet, EMP, slang) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SPAM

Spiced Pork and hAM (Usenet, EMP) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

spam

vt.,vi.,n. [from "Monty Python's Flying Circus"] 1. To crash a program by overrunning a fixed-size buffer with excessively large input data. See also buffer overflow, overrun screw, smash the stack. 2. To cause a newsgroup to be flooded with irrelevant or inappropriate messages. You can spam a newsgroup with as little as one well- (or ill-) planned message (e.g. asking "What do you think of abortion?" on soc.women). This is often done with cross-posting (e.g. any message which is crossposted to alt.rush-limbaugh and alt.politics.homosexuality will almost inevitably spam both groups). This overlaps with troll behavior; the latter more specific term has become more common. 3. To send many identical or nearly-identical messages separately to a large number of Usenet newsgroups. This is more specifically called `ECP', Excessive Cross-Posting. This is one sure way to infuriate nearly everyone on the Net. See also velveeta and jello. 4. To bombard a newsgroup with multiple copies of a message. This is more specifically called `EMP', Excessive Multi-Posting. 5. To mass-mail unrequested identical or nearly-identical email messages, particularly those containing advertising. Especially used when the mail addresses have been culled from network traffic or databases without the consent of the recipients. Synonyms include UCE, UBE. 6. Any large, annoying, quantity of output. For instance, someone on IRC who walks away from their screen and comes back to find 200 lines of text might say "Oh no, spam". The later definitions have become much more prevalent as the Internet has opened up to non-techies, and to most people senses 3 4 and 5 are now primary. All three behaviors are considered abuse of the net, and are almost universally grounds for termination of the originator's email account or network connection. In these senses the term `spam' has gone mainstream, though without its original sense or folkloric freight - there is apparently a widespread myth among lusers that "spamming" is what happens when you dump cans of Spam into a revolving fan. Hormel, the makers of Spam, have published a surprisingly enlightened position statement on the Internet usage. From Jargon Dictionary http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

Spam (or Spamming)

An inappropriate attempt to use a mailing list, or USENET or other networked communications facility as if it was a broadcast medium (which it is not) by sending the same message to a large number of people who didn?t ask for it. The term probably comes from a famous Monty Python skit which featured the word spam repeated over and over. The term may also have come from someone?s low opinion of the food product with the same name, which is generally perceived as a generic content-free waste of resources. (Spam. is a registered trademark of Hormel Corporation, for its processed meat product.) From Matisse http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

spamassassin

Perl-based spam filter using text analysis This package contains a script that is designed to be called from a user's .forward or .procmailrc file, and acts to filter out all junk or spam e-mail. It also contains a daemon and client (written in C) designed for high load servers, reducing loading overhead. It includes automatic white-listing, RBL testing, and header and body testing for common spam contents. With librazor-perl, it also checks messages against an online collaborative database. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

spamfilter

Filter spam from incoming mail This package contains a framework to make it easy to filter spam (i.e. junk email) from your incoming mail. It is intended as a user-controlled filter instead of being attached to the MTA as would otherwise be required. All a user has to do is run "spamfilter" and edit one file to set personal information (email addresses, etc.) to have a fully functional spam filter on their incoming mail. Once installed, the filter is infinitely customizable by the user via the rules of procmail. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SPANS

Simple Protocol for ATM Network Signalling (ForeRunner, ATM) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SPAP

Secure Password Authentication Protocol From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SPAP

Shiva Password Authentication Protocol (PAP, 3Com) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SPARC

Scalable Processor ARChitecture (Sun) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SPARC

Standard Planning And Requirement Committee (ANSI, org.) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SPAT

Speech Pronounciation Analysis Training (Uni Mainz), "S.P.A.T." From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

spawg

a simple TeX DVI previewer with a simple GTK+ UI spawg is a simple TeX DVI(DeVice Independent) file previewer for the X Window System. It has no color support, but anti-aliasing is still supported. Unlike spawx11, it has a humble but comfortable GTK+ frontend. No-anti-aliasing version (spwg) is also included, too. This is a part of the TeX-Guy distribution. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

spawn

to create a child process in a multitasking operating system. Eg. Linux's fork system call. From Linux Guide @FirstLinux http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

spawx11

a simple TeX DVI previewer for X11 spawx11 is a simple TeX DVI(DeVice Independent) file previewer for the X Window System. It has no color support, but anti-aliasing is still supported. No-anti-aliasing versions (spwx11 and spx11) are also included, too. This is a part of the TeX-Guy distribution. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SPC

SCSI-3 Primary Commands (SAM, SCSI) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SPC

Solution Partner Center (IBM) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SPC

Stored Program Command From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SPC

Stored Program Control From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SPCF

Service Point Command Facility (IBM) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SPCS

Stored Program Control Systems From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SPD

Serial Presence Detect (EEPROM, SDRAM) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SPD

Software Product Description From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SPD

Software Products Division From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SPDEEPROM

Serial Presence Detect - Electronical Erasable Programmable Read Only MemorySerial Presence Detect (EPROM, IC, ROM), "SPD-EEPROM" From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SPDIF

Sony/Philips - Digital Interface Format (audio, Sony, Philips), "S/P-DIF" From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SPDL

Standard Page Description Language (ISO, IEC, IS 10180) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SPDN

Shared Private Data Network From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SPDU

Session Protocol Data Unit (OSI, PDU, OSI/RM) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SPE

Symbolic Programming Environment From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SPE

Synchronous Payload Envelope From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

speaker

Tcl/Tk speaker-phone application speaker is a speaker-phone application for US Robotics and Rockwell voice modems. If your modem has a speaker-phone feature implemented in hardware, then you can use speaker to control your modem. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SPEC

System Performance Evaluation Corporation (org., RISC) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

spec-helper

Tools to ease the creation of rpm packages for the Mandrake Linux distribution. Compress man pages using bzip2, strip executables, convert links... From Mandrake 9.0 RPM http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

special characters

Non-alphanumeric characters such as !, @, ^, *. From Redhat-9-Glossary http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

specspo

The specspo package contains the portable object catalogues used to internationalize Red Hat packages. From Redhat 8.0 RPM http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

spectemu-common

Fast 48k ZX Spectrum Emulator (common files) Spectemu emulates the 48k ZX Spectrum, which uses the Z80 microprocessor. This package contains common configuration files and utilities which are or can be used by either the X11 or the SVGAlib frontend. It emulates the Z80 processor as well as the 48k Spectrum's other hardware: keyboard, screen, sound, tape I/O. The emulation is very close to the real thing, but it is still quite fast (It was reported to be working well on a laptop with 486 at 25MHz!). On the other hand, the user interface is not the best. Features include: - Sound support through Linux kernel sound-card driver. - Snapshot saving and loading (.Z80 and .SNA format) - Tape emulation: loading from tape files (.TAP and .TZX format) - Optional quick loading of tapes. - Saving to tape files. - Separate utility to save tape files to real tape - Configurable with config files and from command line From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

Spectra Linux

Finnish company Probatus Oy makes Spectra Linux. Designed for workstation and server use, this distribution comes with lots of extras, including the Probatus Spectra SDK application development environment, which supports all most common operating systems. Initial public release on April 17, 2002. From LWN Distribution List http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

speech-tools

Edinburgh Speech Tools - user binaries This package contains the various highly useful (to speech scientists, at least) utility programs that use and accompany the Edinburgh Speech Tools Library. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

speedbar

Dired on steroids Speedbar is an Emacs Lisp program which allows you to create a special skinny frame with a specialized directory listing in it. This listing will have both directories and filtered files in it. You can then load files into your emacs frame, or expand the files to display all the tags that are in them and jump to those tags. You can also expand multiple directories into your speedbar frame. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

speedy-cgi-perl

speed up perl scripts by making them persistent. SpeedyCGI is a way to run perl scripts persistently, which usually makes them run much more quickly because it avoids the overhead of starting up a new perl interpreter and compiling the perl code. It is most often used for CGI scripts but it can be used to speed up most perl programs. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

spell

GNU Spell, a clone of Unix `spell' GNU Spell is a spell checking program which prints each misspelled word on a line of its own. It is designed as a clone of the standard Unix `spell' program, and implemented as a wrapper for Ispell. Spell accepts as its arguments a list of files to read from. Within that list, the magical file name `-' causes Spell to read from standard input. In addition, when called with no file name arguments, Spell assumes that it should process standard input. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

spellcast

The classic hand-waving multi-player X game of spellcasting. Spellcast is a classic game of might and magic for the X Windowing System. Two or more wizards duke it out with spells, summons, and plain old poking with fingers. Good for hour[s] of fun. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

spellutils

Utilities to spell-check selectively Spellutils is a suite of programs which are used to isolate some parts from various types of files and hand them over to another program which may change the texts; it is typically a spell checker. Afterwards the possibly changed text parts are copied back in place in the original file. The newsbody program is intended for use on mail and news messages; it can e.g. ignore headers, quoted material and signatures. The pospell program is for use on translated strings in .po files. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

spent

print SGML entity on the standard output From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SPF

Structured Programming Facility From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sphinx2-bin

speech recognition utilities Sphinx 2 is a real-time, speaker-independent speech recognition system. This package contains examples and utilities that use Sphinx. It also includes a sample language model that is capable of recognizing simple commands like "go forward ten meters" and other commands one might use to tell a robot where to move. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sphinx2-hmm-6k

speech recognition library - default acoustic model Sphinx 2 is a real-time, speaker-independent speech recognition system. This package contains an acoustic model for Sphinx-II trained for close-talking microphones. It is the default acoustic model used by the demos, and should provide adequate performance for most desktop applications. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SPI

SCSI-3 Parallel Interface (SAM, SCSI) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SPI

Security Parameter Index From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SPI

Serial Peripheral Interface From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SPI

Service Provider Interface (WOSA) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SPI

Software Products International (manufacturer) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

spicctrl

Sony Vaio controller program to set LCD backlight brightness spicctrl is a small program that can use the Sony Programmable I/O Control device (SPIC), which is part of Sony Vaio's, to do a few simple things. Currently, it can only be used to control the brightness on the LCD backlight, and print out some information about the battery. You need a kernel with the sonypi module (and a Vaio laptop..) to use this program. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SPICE

Scalable Parallel Intelligent Communications Engine From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SPICE

Simulation Program with Integrated Circuit Emphasis From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SPICS

Spare Parts Inventory Control System (MBAG) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SPID

Service Profile IDentifier (ISDN) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SPID

Service Protocol IDentifier From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

spider

A two deck solitaire game for the X Window System. Spider is delivered in two forms: small.spider is for systems without high resolution screens so the board will fit on the screen; round.spider has prettier card backs but takes up more room on the screen. The default is round.spider. If you wish to use small.spider, either call it directly, or change the link /usr/X11R6/bin/spider to point to small.spider instead of round.spider. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

spider

An automated program that reads webpages from a website, then follows the hypertext links to other pages. If the Internet is a "web", then a spider is something that follows the strands of the web. Key point: A website can use the file "robots.txt" to give hints to spiders what they should, or should not, index. A big problem with websites is that spiders are really good at finding webpages, even those that website operators don't care to be exposed. However, users can still find these pages due to hits from search engines. Website operators can therefore "hide" pages by listing them in "robots.txt". However, hackers will therefore read "robots.txt" in order to find webpages that website operators want hidden. Example: Spammers use spiders to sift through web pages looking for e-mail addresses. For example, if you have a link that looks like <A HREF="mailto:spexamp@reckoning.robertgraham.com">me</A> then the spam spider will find the address and funnel spam to you. A partial defense against this is to URL-encode your e-mail address, which hides it from most spam spiders, but works in most browsers. See the page at http://www.robertgraham.com/tools/mailtoencoder.html for an example. Contrast: A spider pulls information inward; a worm pushes itself outward to other systems. A spider is a type of 'bot, rather than infectious malware like viruses, trojans, or worm. From Hacking-Lexicon http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SPIN

Sponsored Programs Information Network From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SPKM

Simple Public-Key [GSS-API] Mechanism (GSS, RFC 2025) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SPL

Set Priority Level (Unix) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SPL

Simple Programming Language From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SPL

Systems Programming Language (HP, MPE, ALGOL, HP 3000) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

splac

a splash screen renderer From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

Splack

Splack is a volunteer effort set up to continue work on the now defunct Slackware Sparc port. They try to track the official Slackware for Intel tree, which is the original Linux distribution. Slackware is based on the KISS (Keep It Simple - Stupid) principle, which makes it easy to maintain for anyone with a bit of Unix experience. Not a lot of point & click setup tools here. Splack v-y1test was released September 30, 2001. From LWN Distribution List http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

splain

standalone program to do the same thing From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

splash

a splash screen renderer From whatis http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

splay

Sound player for MPEG-1,2 layer 1,2,3 Based on maplay, this package decodes layer I, II, and III MPEG audio streams and plays them from the command line using a CD-quality audio device. It uses far less computing power than one commercial equivalent, "l3dec". From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

spline

Akima spline interpolation. spline(1) interpolates an Akima-spline trough a series of given points. The Akima-spline interpolation approximates a manually drawn curve better than the ordinary splines, but the second derivation is not continuous. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

splint

Splint scans C code for mistakes and bad style. From Redhat 8.0 RPM http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

split

Creates one or more output files (as many as necessary) containing consecutive sections of the infile, or the standard input if none is given or the name `-' is given. By default, split puts 1000 lines of the input file, or whatever is left if it is less than that, into each output file. From Linux Guide @FirstLinux http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

splitdigest

A program that splits mail-digests. It takes a digest from a file specified on the command line or STDIN and writes a mbox-format (Elm, Pine, VM, mailx, etc) folder with the digest. I have it preconfigured for Debian-User and Debian-Changes, but it is easily configured for any type of digest. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

splitvt

run two programs in a split screen A utility to split a vt100 compatible screen into two halves, upper and lower, and run a different program simultaneously in each half. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SPM

Session Protocol Machine (OSI, ISO 8327) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SPM

Set Program Mask From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SPM

Software Performance Monitor From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SPM

Source Program Maintenance From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SPM

System Performance Monitor From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SPM2

System Performance Monitor /2 (IBM, OS/2), "SPM/2" From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SPN

Substitution Permutation Network (cryptography) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SPOF

Single Point Of Failure From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

spong-client

A systems and network monitoring system -- client programs This package includes the spong applications for monitoring systems and network services, and text based programs for requesting information or acknowledging problems from the spong server Spong is a simple systems and network monitoring package. It does not compete with Tivoli, OpenView, UniCenter, or any other commercial packages. It is not SNMP based, it communicates via simple TCP based messages. It is written in perl and easily modifiable. Its features include: * client based monitoring (CPU, disk, processes, logs, etc.) * monitoring of network services (smtp, http, ping, pop, dns, etc.) * grouping of hosts (routers, servers, workstations, PCs) * rules based messaging when problems occur * configurable on a host by host basis * results displayed via text or web based interface * history of problems * verbose information to help diagnosis problems * modular programs to makes it easy to add or replace check functions or features * Big Brother BBSERVER emulation to allow Big Brother Clients to be used From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

spong-common

A systems and network monitoring system -- common libraries This package includes the spong perl libraries, which all spong applications depend on. Spong is a simple systems and network monitoring package. It does not compete with Tivoli, OpenView, UniCenter, or any other commercial packages. It is not SNMP based, it communicates via simple TCP based messages. It is written in perl and easily modifiable. Its features include: * client based monitoring (CPU, disk, processes, logs, etc.) * monitoring of network services (smtp, http, ping, pop, dns, etc.) * grouping of hosts (routers, servers, workstations, PCs) * rules based messaging when problems occur * configurable on a host by host basis * results displayed via text or web based interface * history of problems * verbose information to help diagnosis problems * modular programs to makes it easy to add or replace check functions or features * Big Brother BBSERVER emulation to allow Big Brother Clients to be used From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

spong-server

A systems and network monitoring system -- server programs This package includes the spong daemon, which collects and stores information from the spong client programs, and the program for sending out messages when problems occur. Spong is a simple systems and network monitoring package. It does not compete with Tivoli, OpenView, UniCenter, or any other commercial packages. It is not SNMP based, it communicates via simple TCP based messages. It is written in perl and easily modifiable. Its features include: * client based monitoring (CPU, disk, processes, logs, etc.) * monitoring of network services (smtp, http, ping, pop, dns, etc.) * grouping of hosts (routers, servers, workstations, PCs) * rules based messaging when problems occur * configurable on a host by host basis * results displayed via text or web based interface * history of problems * verbose information to help diagnosis problems * modular programs to makes it easy to add or replace check functions or features * Big Brother BBSERVER emulation to allow Big Brother Clients to be used From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

spong-www

A systems and network monitoring system -- web interface This package includes the programs for displaying the current status and history of the systems and network services, as well as charts of based on logged information when used together with rrdtool, on the World Wide Web. Spong is a simple systems and network monitoring package. It does not compete with Tivoli, OpenView, UniCenter, or any other commercial packages. It is not SNMP based, it communicates via simple TCP based messages. It is written in perl and easily modifiable. Its features include: * client based monitoring (CPU, disk, processes, logs, etc.) * monitoring of network services (smtp, http, ping, pop, dns, etc.) * grouping of hosts (routers, servers, workstations, PCs) * rules based messaging when problems occur * configurable on a host by host basis * results displayed via text or web based interface * history of problems * verbose information to help diagnosis problems * modular programs to makes it easy to add or replace check functions or features * Big Brother BBSERVER emulation to allow Big Brother Clients to be used From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

spoof

The word "spoof" generally means the act of forging your identity. More specifically, it means forging the sender's IP address (IP spoofing). Analogy: When you send a letter via normal post (snail mail), you write the recipient's name and address on the envelope. You typically also write the sender's name and address as well, so that if there is an error forwarding you letter (e.g. a stamp falls off), they know who sent the letter and can return it. However, you can easily spoof it. For example, someone I know absolutely had to send a letter, but had no stamps. So he simply put the actual recipient's name as the return address section of the envelope and dropped it into the mail box. The letter was returned to sender, which of course arrived at the intended recipient. Misunderstanding: Most people are interested in spoofing because they think it will allow them to hack a machine in a completely anonymous manner. It doesn't work this way. For example, Mitnick used IP spoofing in order to attack Shimomura's computers, but was caught anyway because spoofing does not truly hide the attacker. The problem is that all responses go back to the sender, so if you've spoofed the sender, you'll never see the responses. Therefore, the spoofing is useless for any normal activity. On the other hand, spoofing can still be useful in situations where seeing the response is not necessary. In the Mitnick instance, two machines trusted each other. Therefore, Mitnick was able to emulate and entire connection between the two machines by "predicting" what all the responses would be. He used this connection to open up something on the victim machine that he could then connect to normally. It was precursor scanning the and the post-spoof connection that Shimomura used to catch Mitnick. Example: A particularly nasty form of a spoofing is TCP sequence number prediction. Theoretically, you cannot spoof any protocol based upon TCP connections. This is because both sides of a TCP connection choose their own Initial Sequence Number (ISN). In theory, this is a completely random number that cannot be guessed. In practice, it can sometimes be easily guessed. Mitnick used this technique when hacking Shimomura. As of the end of 1999, operating systems such as Linux, WinNT, and Win2k have implemented truly random ISNs in order to defeat this type of attack. Example: In terms of volume of traffic, the most common use of spoofing today is smurf and fraggle attacks. These attacks spoofed packets against amplifiers in order to overload the victim's connection. This is done by sending a single packet to a broadcast address with the victim as the source address. All the machines within the broadcast domain then respond back to the victim, overloading the victim's Internet connection. Since smurfing accounts for more than half the traffic on some backbones, ISPs are starting to take spoofing seriously and have started implementing measures within their routers that verify valid source addresses before passing the packets. As a consequence, spoofing will become increasingly more difficult as time goes on. Key point: Most of the discussion of spoofing centers around clients masquerading as somebody else. On the other hand, the reverse problem is equally worrisome: hackers can often spoof servers. For example, I post on my website that there is a serious security fix needed to protect yourself while on the web, and point you to http://www.micrsoft.com and hope that you never notice that the URL is misspelled. You would then go to that site (which would be really my server) and download the patch, which would really be a Trojan Horse that I designed in order to break into your computer. This is why server-side certificates are important: they allow someone to validate that the server isn't bogus. Key point: As the analogy with postal mail shows, many things can be forged, not just the sender's IP address. Most spammers forge their sender's e-mail address in order to avoid all the hate mail they will receive in response. Forging your own sender e-mail address is as simple as reconfiguring your e-mail client -- anybody can do it. (However, there are more secrets to this, which mean you can still be caught by any determined person). Contrast: Blind spoofing describes when you have no knowledge of the responses. Non-blind spoofing is when you are somewhere "in the line of site" as one end of the connection and can sniff some packets. For example, you may spoof a neighbor on the same cable-modem segment. Non-blind spoofing is also used in sniffers like juggernaut to either kill connections or to hijack them. From Hacking-Lexicon http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

spoof

vi. To capture, alter, and retransmit a communication stream in a way that misleads the recipient. As used by hackers, refers especially to altering TCP/IP packet source addresses or other packet-header data in order to masquerade as a trusted machine. This term has become very widespread and is borderline techspeak. From Jargon Dictionary http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

spool

Simultaneous Peripheral Operation On-Line - To send files to some device or program (a `spooler') that queues them up and does something useful with them later. From Linux Guide @FirstLinux http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SPOOL

Simultaneous Peripheral Operations OnLine From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

spool

vi. [from early IBM `Simultaneous Peripheral Operation On-Line', but is widely thought to be a backronym] To send files to some device or program (a `spooler') that queues them up and does something useful with them later. Without qualification, the spooler is the `print spooler' controlling output of jobs to a printer; but the term has been used in connection with other peripherals (especially plotters and graphics devices) and occasionally even for input devices. See also demon. From Jargon Dictionary http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

Spool (Simultaneous Peripheral Operation On-Line)

To send data to a program that queues up the information for later use (for example, the print spooler). From I-gloss http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

spool file

n. Any file to which data is spooled to await the next stage of processing. Especially used in circumstances where spooling the data copes with a mismatch between speeds in two devices or pieces of software. For example, when you send mail under Unix, it's typically copied to a spool file to await a transport demon's attentions. This is borderline techspeak. From Jargon Dictionary http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

Spool files

Systems services like lpd, innd, sendmail, and uucp create intermediate files in the course of processing each request. These are called spool files and are stored somewhere under the /var/spool/ directory, usually to be processed and then deleted in sequence. From Rute-Users-Guide http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sporum

a powerful Web-based discussion forum. A powerful Web-based discussion forum. Its features include user registration, cookie-based login, a built-in search engine, multiple forums, the ability to customize using the built-in administration package, and much more. Sporum uses SQL server to store data, so postings and searches run on the forum are extremely fast and efficient. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SPP

Scalable Parallel Processing (Intel) From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SPP

Sequenced Packet Protocol From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SPP

Standard Parallel Port From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

sppc

Simple Panel Plot Composer This is SPPC (Simple Panel Plot Composer). It can make output to postscript, ppm and gif files, or display in an OpenGL window. It is used by tela, but can also be used standalone. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SPR

Software Problem Report From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SPS

SpeicherProgrammierbare Steuerungstechnik From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SPS

String Processing System From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SPS

Symbolic Programming System From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SPSL

Special-Purpose Simulation Language From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SPSS

Statistical Package of the Social Sciences From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SPT

Sectors Per Track From VERA http://www.tldp.org/LDP/Linux-Dictionary/html/index.html

SPT

Shortest Path Tree (PIM, ST, Multicast) From VERA