Dictionary of Computer Terms

Binh Nguyen


                    
                

Legal Notice
Disclaimer

2005-05-15 16:52:12

Revision History
Revision 1.02005-01-29
Forked from TLDP Linux Dictionary and ported commons to the project.

Abstract

The "Dictionary of Computer Terms" is a terminology reference containing descriptions of terms related to computing. The reference is developed and maintained as a free and open source project at http://computerdictionary.tsf.org.za/.

The primary aim of the project is to continually improve and maintain the terminology reference so that it remains as comprehensive and current possible. This is a monumental task made easier with the help of many people who contribute terms and definitions in the spirit of free and open content.

We want this work to be an easily accessible reference resource, available to anyone who cares to use it. Various presentational formats of the reference are therefore available from the project web site.

The reference is developed in Docbook XML format. The source files are therefore ideally suited as a glossary database in publishing systems based on Docbook.


Table of Contents

Preface
Acknowledgements
Feedback
1. Computer Dictionary
Punctuation
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
Bibliography
A. Creative Commons by Attribution-ShareAlike 2.0

Preface

Table of Contents

Acknowledgements
Feedback

Acknowledgements

  • Martin Wheeler.

  • Dale Rogers for participating in coverage testing.

  • Anthony E. Greene for writing a program to help sort the dictionary into alphabetical order.

  • Machtelt Garrels for writing a template program which allowed me to write a program to convert the original text file to Docbook.

  • Chris Karakas for general troubleshooting.

  • Greg Ferguson for general help in publishing this document.

  • Andrew Laird for participating in coverage testing.

  • Jason Hounam for participating in coverage testing.

  • Ahmed Tanvir for participating in coverage testing.

  • Dan Richter.

  • Emma Jane Hogbin.

  • Geoff Farrell.

  • Neil Eagle.

  • Rodolfo J. Paiz for advice in regards to maintaining this document.

  • Ruth A. Kramer for advice in regards to maintaining this document.

  • Saqib Ali for help in converting this document to various other formats.

  • Scott Baust.

  • David Horton.

  • Que Anh.

  • Pawel Kot.

Feedback

As the reader of this reference or user of the source your feedback is greatly appreciated.

The Computer Dictionary project is a free and open source innitiative. This means there are many ways in which people can join and contribute to the development and maintenance of the terminology reference. For example, anyone can suggest and contribute a new computing term and its' definition for inclusion in the reference. In the same way, anyone spotting an error or 'typo' can bring it to the attention of others or even rectify it on their own.

Please send feedback, comments, suggestions and questions to the Computer Dictionary project with the subject heading of [Feedback].

The Computer Dictionary project would appreciate and consider it courteous to receive notification of any and all modifications, translations, and printed versions derived from this work that are not contributed back the Computer Dictionary project.

Chapter 1. Computer Dictionary

Punctuation

$BASH environment variable

Expands to the full pathname used to invoke this instance of bash. [40]

$BASH_VERSION environment variable

Expands to the version number of this instance of bash. [40]

$CDPATH environment variable

The search path for the cd command. This is a colon-separated list of directories in which the shell looks for destination directories specified by the cd command. A sample value is '.:~:/usr''. [40]

$ENV environment variable

If this parameter is set when bash is executing a shell script, its value is interpreted as a filename containing commands to initialize the shell, as in .bashrc. The value of ENV is subjected to parameter expansion, command substitution, and arithmetic expansion before being interpreted as a pathname. PATH is not used to search for the resultant pathname. [40]

$FIGNORE environment variable

A colon-separated list of suffixes to ignore when performing filename completion (see READLINE below). A filename whose suffix matches one of the entries in FIGNORE is excluded from the list of matched filenames. A sample value is '.o:~''. [40]

$HISTCMD environment variable

The history number, or index in the history list, of the current command. If HISTCMD is unset, it loses its special properties, even if it is subsequently reset. [40]

$HISTCONTROL environment variable

If set to a value of ignorespace, lines which begin with a space character are not entered on the history list. If set to a value of ignoredups, lines matching the last history line are not entered. A value of ignoreboth combines the two options. If unset, or if set to any other value than those above, all lines read by the parser are saved on the history list. [40]

$HISTFILE environment variable

The name of the file in which command history is saved. (See HISTORY below.) The default value is ~/.bash_history. If unset, the command history is not saved when an interactive shell exits. [40]

$HISTFILESIZE environment variable

The maximum number of lines contained in the history file. When this variable is assigned a value, the history file is truncated, if necessary, to contain no more than that number of lines. The default value is 500. [40]

$HISTSIZE environment variable

The number of commands to remember in the command history (see HISTORY below). The default value is 500. [40]

$HOME environment variable

The home directory of the current user; the default argument for the cd builtin command. [40]

$HOSTFILE

Contains the name of a file in the same format as /etc/hosts that should be read when the shell needs to complete a hostname. The file may be changed interactively; the next time hostname completion is attempted bash adds the contents of the new file to the already existing database. [40]

$HOSTTYPE

Automatically set to a string that uniquely describes the type of machine on which bash is executing. The default is system-dependent. [40]

$IFS

In UNIX, the $IFS variable separates commands. It is usually conigured to be the semicolon (;) and newline characters. However, it can be reconfigured to be other characters as well. Data-driven attacks will sometimes seek to reset the IFS variable (e.g. IFS=x), then cause execution within the data field wihtout having to insert shell metacharacters. Tidbit: On Linux, the $FF variable may also be used like $IFS. [96]

$IFS

The Internal Field Separator that is used for word splitting after expansion and to split lines into words with the read builtin command. The default value is '<space><tab><newline>''. [40]

$IGNOREEOF

Controls the action of the shell on receipt of an EOF character as the sole input. If set, the value is the number of consecutive EOF characters typed as the first characters on an input line before bash exits. If the variable exists but does not have a numeric value, or has no value, the default value is 10. If it does not exist, EOF signifies the end of input to the shell. This is only in effect for interactive shells. [40]

$INPUTRC environment variable

The filename for the readline startup file, overriding the default of ~/.inputrc (see READLINE below). [40]

$LINENO

Each time this parameter is referenced, the shell substitutes a decimal number representing the current sequential line number (starting with 1) within a script or function. When not in a script or function, the value substituted is not guaranteed to be meaningful. When in a function, the value is not the number of the source line that the command appears on (that information has been lost by the time the function is executed), but is an approximation of the number of simple commands executed in the current function. If LINENO is unset, it loses its special properties, even if it is subsequently reset. [40]

$MAIL

If this parameter is set to a filename and the MAILPATH variable is not set, bash informs the user of the arrival of mail in the specified file. [40]

$MAILCHECK

Specifies how often (in seconds) bash checks for mail. The default is 60 seconds. When it is time to check for mail, the shell does so before prompting. If this variable is unset, the shell disables mail checking. [40]

$MAILPATH

A colon-separated list of pathnames to be checked for mail. The message to be printed may be specified by separating the pathname from the message with a '?'. $_ stands for the name of the current mailfile. Example: MAILPATH='/usr/spool/mail/bfox?"You have mail":~/shell-mail?"$_ has mail!"' Bash supplies a default value for this variable, but the location of the user mail files that it uses is system dependent (e.g., /usr/spool/mail/$USER). [40]

$MAIL_WARNING

If set, and a file that bash is checking for mail has been accessed since the last time it was checked, the message 'The mail in mailfile has been read'' is printed. [40]

$OLDPWD

The previous working directory as set by the cd command. [40]

$OSTYPE

Automatically set to a string that describes the operating system on which bash is executing. The default is system-dependent. [40]

$PATH

The search path for commands. It is a colon-separated list of directories in which the shell looks for commands (see COMMAND EXECUTION below). The default path is system-dependent, and is set by the administrator who installs bash. A common value is '/usr/gnu/bin:/usr/local/bin:/usr/ucb:/bin:/usr/bin:.''. [40]

$PATH

The shell looks for commands and programs in a list of file paths stored in the PATH environment variable. An environment variable stores information in a place where other programs and commands can access it. Environment variables store information such as the shell that you are using, your login name, and your current working directory. To see a list of all the environment variables currently defined; type 'set' at the prompt. When you type a command at the shell prompt, the shell will look for that command's program file in each directory listed in the PATH variable, in order. The first program found matching the command you typed will be run. If the command's program file is not in a directory listed in you PATH environment variable, the shell returns a "commands not found" error. By default, the shell does not look in your current working directory or your home directory for commands This is really a security mechanism so that you don't execute programs by accident. What if a malicious user put a harmful program called ls in your home directory? If you typed ls and the shell looked for the fake program in your home directory before the real program in the /bin directory, what do you think woul dhappen? If you thought bad things, you are on the right track. Since your PATH doesn't have the current directory as one of its search locations, programs in your current directory must be called with an absolute path of a relative path specified as './program-name'. To see what directories are part of your PATH enter this command: # echo $PATH /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/bin/X11 [66]

$PROMPT_COMMAND

If set, the value is executed as a command prior to issuing each primary prompt. [40]

$PS1

The value of this parameter is expanded (see PROMPTING below) and used as the primary prompt string. The default value is 'bash\$ ''. [40]

$PS2

The value of this parameter is expanded and used as the secondary prompt string. The default is '> ''. [40]

$PS3

The value of this parameter is used as the prompt for the select command (see SHELL GRAMMAR above). [40]

$PS4

The value of this parameter is expanded and the value is printed before each command bash displays during an execution trace. The first character of PS4 is replicated multiple times, as necessary, to indicate multiple levels of indirection. The default is '+ ''. [40]

$PWD

The current working directory as set by the cd command. [40]

$RANDOM

Each time this parameter is referenced, a random integer is generated. The sequence of random numbers may be initialized by assigning a value to RANDOM. If RANDOM is unset, it loses its special properties, even if it is subsequently reset. [40]

$SECONDS

Each time this parameter is referenced, the number of seconds since shell invocation is returned. If a value is assigned to SECONDS. the value returned upon subsequent references is the number of seconds since the assignment plus the value assigned. If SECONDS is unset, it loses its special properties, even if it is subsequently reset. [40]

$SHLVL

Incremented by one each time an instance of bash is started. [40]

.#01

and higher A method of numbering picture files for a roll of film that has been scanned for computer presentation [34]

.$$$

Used by OS/2 to keep track of archived files [34]

.(Pagis)

native format [34]

.000

Data file (GEOWorks) [34]

.000-20009

Used to number old (backup) versions of files (for example, CONFIG.SYS when changed by an installation program); also used to number [34]

.001-999

Database index files used by (Superbase) [34]

.1-STEP

Backup file (Iomega Backup) [34]

.113

Backup data file (Iomega Backup) [34]

.123

Lotus 123 97 file [34]

.12M

Smartmaster file (Lotus 1-2-3 '97) [34]

.1ST

Documenting wizard list (Microsoft Visual FoxPro) [34]

.2D

Two-dimensional drawing file (VersaCAD) (http://www.versacad.com/vcadhome.htm) [34]

.2GR

and 3GR VGA Graphics driver/configuration files (Microsoft Windows) [34]

.386

A file for use in an 80386 or higher microprocessor [34]

.3D

Three-dimensional drawing file (VersaCAD) (http://www.versacad.com/vcadhome.htm) [34]

.3DM

3D NURBS modeler, (Rhino) [34]

.3DS

A file in 3D Studio (for DOS) format [34]

.411

Data file (Used by digital cameras) [34]

.4GE

Compiled code (Informix 4GL) [34]

.4GL

Source code (Informix 4GL) [34]

.4V

Music file (Quartet) [34]

.669

Music mod file (Composer 669)(Unis Composer) [34]

.669

Tracker module (Composer 669) [34]

.8

Source file (Assembly) (Similar to Microsoft Assembler) [34]

.@@@

Screen files used in the installation and instruction on use of such applications as Microsoft Codeview for C [34]

.a

Archive. lib*.a is a static library. [40]

.A

Library file (Unix) [34]

.A

Object code library [34]

.A3L

Authorware 3.x library [34]

.A3M

Authorware MacIntosh file (unpackaged) [34]

.A3W

Authorware Windows file (unpackaged) [34]

.A4L

Authorware 4.x library [34]

.A4M

Authorware MacIntosh file (unpackaged) [34]

.A4P

Authorware file (packaged without runtime) [34]

.A4W

Authorware Windows file (unpackaged) [34]

.A5L

Authorware 5.x library [34]

.A5W

Authorware Windows file (unpackaged) [34]

.AA

Audible audio file (commonly used for downloadable audio books) [34]

.AAM

Authorware shocked file [34]

.AAS

Authorware shocked packet [34]

.AB

Applix Builder file [34]

.ABF

Adobe Binary Screen Font [34]

.ABK

Backup file (PrintMaster Gold) [34]

.ABK

Corel Draw AutoBackup [34]

.ABM

Audio album file (HitPlayer) [34]

.ABO

Applix Builder Turbo file [34]

.ABS

MPEG Audio Sound file [34]

.ABS

Sometimes used to denote an abstract (as in an abstract or summary of a scientific paper) AutoBackup [34]

.ABS

Standard GNU compiler output file for a PC platform [34]

.ACA

HTTP animation file (Microsoft Agent) [34]

.ACA

Project Manager Workbench file [34]

.ACB

ACBM Graphic image [34]

.ACC

DR-DOS Viewmax file [34]

.ACD

Character definiton file (Microsoft Agent) [34]

.ACE

ACE Archiver Compression <http://searchStorage.techtarget.com/sDefinition/0,,sid5_gci211828,00.html> file [34]

.ACF

HTTP character file (Microsoft Agent) [34]

.ACI

ACI development appraisal (ACIWEB) [34]

.ACL

Corel Draw 6 keyboard accelerator file [34]

.ACM

Dynamic Link Library (DLL) [34]

.ACM

Interplay compressed sound file (Fallout 1,2, Baulder's Gate) [34]

.ACM

Windows system directory file [34]

.ACP

Microsoft Office Assistant Preview file [34]

.ACR

American College of Radiology file [34]

.ACS

Character structered storage file (Microsoft Agent) [34]

.ACT

Action Presentation [34]

.ACT

Documenting wizard action diagram (Microsoft Visual FoxPro) [34]

.ACT

FoxPro Foxdoc Action Diagram [34]

.ACT

Microsoft Office Assistant Actor file [34]

.ACV

Used to Compress and decompress audio data [34]

.AD

After Dark screensaver [34]

.Ada

<http://search390.techtarget.com/sDefinition/0,,sid10_gci211523,00.html> Ada source text file (non-GNAT) [34]

.ADB

Ada source text body file (GNAT) [34]

.ADB

HP 100LX Organizer Appointment database [34]

.ADC

Scanstudio 16 color Bitmap Graphic file [34]

.ADD

OS/2 adapter driver file used in the boot process [34]

.ADF

Amiga <http://WhatIs.techtarget.com/definition/0,,sid9_gci211557,00.html> disk file [34]

.ADI

AutoCAD device-independent binary plotter file [34]

.ADL

QEMM Mca adaptor description library [34]

.ADM

After Dark MultiModule screensaver (Microsoft) [34]

.ADM

Windows NT <http://searchWin2000.techtarget.com/sDefinition/0,,sid1_gci213368,00.html> policy template [34]

.ADN

Lotus 1-2-3 Add-In file [34]

.ADP

Astound Dynamite file [34]

.ADP

Dynamic Page file (AOLserver) [34]

.ADP

FaxWorks Faxmodem setup file [34]

.ADR

After Dark Randomizer screensaver [34]

.ADR

Smart Address address book [34]

.ADS

Ada source text specification file (GNAT) [34]

.ADT

AdTech Fax file [34]

.ADT

HP NewWave datafile for card applications [34]

.ADX

Archetype Designer Document [34]

.ADX

Dynazip Active Delivery script [34]

.ADX

Lotus Approach dBase Index [34]

.ADZ

Packed ADF file (Extracts with WinZip) [34]

.AE

Author/Editor file (SoftQuad) [34]

.AEP

ArcExplorer project file [34]

.AF2

ABC FlowCharter 2.0 Flowchart [34]

.AF3

ABC Flowchart [34]

.AFC

Apple Sound file [34]

.AFI

Truevision Bitmap graphic [34]

.AFM

Adobe metrics [34]

.AFM

HP NewWave Cardfile application [34]

.AG

Applix graphic [34]

.AI

Adobe Illustrator drawing [34]

.AI

Corel Trace drawing [34]

.AIF

Audio Interchange File, a sound format used by Silicon Graphics and Macintosh applications [34]

.AIFC

Similar to AIF (compressed) [34]

.AIFF

<http://WhatIs.techtarget.com/definition/0,,sid9_gci213472,00.html> Similar to AIF [34]

.AIM

AOL Instant Messenger Launch file [34]

.AIN

AIN Compressed archive [34]

.AIO

APL transfer file [34]

.AIS

ACDSee Image Sequence [34]

.AIS

Velvet Studio Instruments file [34]

.AIS

Xerox Arry of Intensity Samples Graphic [34]

.AIX

HP NewWave Cardfile Application data [34]

.AKW

Contains all A-keywords in the RoboHELP Help Project Index Designer not associated with topics [34]

.ALAW

European Telephony audio [34]

.ALB

JASC Image Commander album [34]

.ALI

Document file (SAP proprietary format) [34]

.ALIAS

Alias Image [34]

.alias

X Window System font alias catalog. [40]

.ALL

Arts & Letters Library [34]

.ALL

WordPerfect for Windows General printer information file [34]

.ALS

Alias Image [34]

.ALT

WordPerfect Library Menu [34]

.AM

Applix SHELF Macro [34]

.AMF

DSMIA/Asylum module music (Crusader,No Remorse,Aladdin) [34]

.AMF

Music file (Advanced Module Format) [34]

.AMG

ACTOR System image [34]

.AMG

AMGC Compressed archive [34]

.AMI

Annotation file (Cocreate SolidDesigner) [34]

.AMS

Extreme's Tracker module [34]

.AMS

Velvet Studio music module (MOD) file [34]

.AN

Text file (Sterling Software) (Groundworks COOL Business Team Model) [34]

.ANC

Canon Computer Pattern Maker file that is a selectable list of [34]

.ANI

Microsoft Windows Animated cursor [34]

.ANM

DeluxPaint Animation [34]

.ANN

Windows 3.x Help annotation [34]

.ANS

ANSI <http://searchCIO.techtarget.com/sDefinition/0,,sid19_gci213776,00.html> Text file [34]

.ANT

SimAnt for Windows saved game [34]

.AOS

Nokia 9000 Add-on software [34]

.AOT

Applicatio binary object template file (ZenWorks snAPPshot) [34]

.AP

Applix Presents file [34]

.AP

WHAP Compressed Amiga archive [34]

.APC

Compiled application file (Centura Team Developer) [34]

.APC

Lotus 1-2-3 Printer driver [34]

.APD

Dynamic application library file (Centura Team Developer) [34]

.APD

Lotus 1-2-3 Printer driver [34]

.APF

Lotus 1-2-3 Printer driver [34]

.APF

Project file (Allaire) (Created by Homesite) [34]

.API

Application Program Interface; used by Adobe Acrobat <http://searchCIO.techtarget.com/sDefinition/0,,sid19_gci211517,00.html> [34]

.API

Lotus 1-2-3 Printer driver [34]

.APL

APL Workspace file [34]

.APL

Application library file (Centura Team Developer) [34]

.APP

dBase Application Generator Object [34]

.APP

DR-DOS Executable Application [34]

.APP

FoxPro Generated Application [34]

.APP

Generated application or active document (Microsoft Visual FoxPro) [34]

.APP

Normal mode application file (Centura Team Developer) [34]

.APP

Symphony Add-in Application [34]

.APR

ArcView project file [34]

.APR

Employee Appraiser Performance Review file [34]

.APR

Lotus Approach 97 View file [34]

.APS

Advanced patching systems with error checking, (Similar to IPS) [34]

.APS

Microsoft Visual C++ file [34]

.APT

Lotus Approach Data view file [34]

.APT

Text mode application file (Centura Team Developer) [34]

.APX

Borland C++ Appexpert database [34]

.APX

Lotus Approach Paradox-Specific information file [34]

.AQ

Applix data [34]

.ARC

LH ARC (old version) compressed archive [34]

.ARC

SQUASH Compressed archive [34]

.ARF

Automatic Response file [34]

.ARI

ARI Compressed archive [34]

.ARI

Aristotle audio file [34]

.ARJ

Robert Jung ARJ compressed archive (ARJ) [34]

.ARK

ARC File Archiver CPM/Port archive [34]

.ARL

AOL v4.0 organizer file [34]

.ARR

Atari Cubase Arrangement [34]

.ART

AOL Image file compressed using the Johson-Grace compression algorithm [34]

.ART

Canon Crayola art [34]

.ART

Clip Art [34]

.ART

First Publisher Raster graphic [34]

.ART

Ray Tracer file [34]

.ART

Xara Studio drawing [34]

.ARX

ARX Compressed Archive [34]

.AS

Applix Spreadsheet [34]

.ASA

Microsoft Visual InterDev <http://searchDatabase.techtarget.com/sDefinition/0,,sid13_gci213682,00.html> file [34]

.ASC

ASCII <http://WhatIs.techtarget.com/definition/0,,sid9_gci211600,00.html> text file [34]

.ASC

PGP <http://searchSecurity.techtarget.com/sDefinition/0,,sid14_gci214292,00.html> armored encrypted <encrypti.htm> file [34]

.ASD

Astound Presentation [34]

.ASD

Lotus 1-2-3 Screen driver [34]

.ASD

Microsoft Advanced Streaming Format (ASF) description file; opens [34]

.ASD

WinWord AutoSave file [34]

.ASE

Velvet Studio Sample file [34]

.ASF

Lotus 1-2-3 Screen font [34]

.ASF

Microsoft Advanced Streaming Format [34]

.ASF

Music file (Electronic Arts) [34]

.ASF

StratGraphics Datafile [34]

.ASH

TASM 3.0 Assembly language header [34]

.ASI

Borland C++/Turbo C Assembler Include file [34]

.ASM

Assembler <http://search390.techtarget.com/sDefinition/0,,sid10_gci211604,00.html> Language source file [34]

.ASM

Pro/E assembly file [34]

.ASO

Astound Dynamite Object [34]

.ASP

<http://searchWin2000.techtarget.com/sDefinition/0,,sid1_gci213787,00.html> Active Server Page (an HTML file containing a Microsoft server-processed script) [34]

.ASP

Astound Presentation [34]

.ASP

Procomm Plus setup and connection script [34]

.AST

Astound multimedia file [34]

.AST

Claris Works "assistant" file [34]

.ASV

DataCAD Autosave file [34]

.ASX

Cheyenne Backup script [34]

.ASX

Microsoft Advanced Streaming Redirector file [34]

.ASX

Video file [34]

.AT2

Aldus Persuasion 2.0 Auto Template [34]

.ATM

Adobe Type Manager data/info file [34]

.ATT

AT&T Group 4 bitmap [34]

.ATW

AnyTime Deluxe for Windows personal information manager file from [34]

.au

Audio format (original Sun Microsystems generic sound file). [40]

.AU

Audio U-law (pronounced mu-law) [34]

.AU

Sun/NeXT/DEC/UNIX sound file [34]

.AUD

Audio file (Westwood Studios) (Kyrandia 3,C&C,RedAlert,C&C:TS) [34]

.AUX

ChiWriter Auxilliary Dictionary file [34]

.AUX

TeX/LaTeX Auxilliary Reference file [34]

.AVA

Avagio Publication [34]

.AVB

Inculan Anti-Virus virus infected file [34]

.AVI

Microsoft Audio Video Interleaved file for Windows movie [34]

.avi

Video format. [40]

.AVR

Audio Visual Research file [34]

.AVS

Application Visualization System file [34]

.AVS

Stardent AVS-X Image [34]

.AVX

File Extension (ArcView) [34]

.AW

Applix Words file [34]

.AW

HP AdvanceWrite Text file [34]

.AWD

FaxView Document image [34]

.awk

awk program source file. [40]

.AWK

AWK Script/Program [34]

.AWM

Animation Works Movie [34]

.AWR

Telsis file for digitally stored audio [34]

.AWS

StatGraphics Data file [34]

.AXL

ArcIMS XML project file [34]

.AXT

ASCII application object template (ZenWorks snAPPshot) [34]

.AXX

ARJ compressed file from a multi-volume archive (xx = a number from 01 to 99) [34]

.B

Applause Batch list [34]

.B&W

1st Reader Mono binary screen image [34]

.B&W

Atari/Macintosh black and white graphic [34]

.B1N

1st Reader Mono and color binary screen image [34]

.B30

ABC Ventura publisher printer font [34]

.B4

Helix Nuts and Bolts file [34]

.B8

Raw graphic file (Piclab Plane II) [34]

.BAD

Oracle bad file [34]

.BAK

Backup file [34]

.BAL

Ballade Music score [34]

.BAR

dBase Application Generator Horizontal menu object [34]

.BAS

BASIC <http://searchVB.techtarget.com/sDefinition/0,,sid8_gci213805,00.html> source code [34]

.BAT

Batch file <http://searchWin2000.techtarget.com/sDefinition/0,,sid1_gci211642,00.html> [34]

.BB

Papyrus Database backup [34]

.BBL

TeX/BibTeX Bibliographic reference file [34]

.BBM

Deluxe Paint Bitmap image [34]

.BBS

Bulletin Board Sytem text [34]

.BCH

Batch Process Object (dBase Application Generator) [34]

.BCH

Datalex Entry Point 90 Data file [34]

.BCM

Microsoft Works Communications file [34]

.BCO

Bitstream Outline font description file [34]

.BCP

Borland C++ Makefile [34]

.BCW

Borland C++ 4.5 Environment settings file [34]

.BDB

Microsoft Works Dababase file [34]

.BDF

Egret Datafile [34]

.BDF

West Point Bridge Designer file [34]

.BDR

Microsoft Publisher Border [34]

.BEZ

Bitstream Outline font description [34]

.BF2

Bradford 2 Font [34]

.BFC

Windows 95 Briefcase Document [34]

.BFM

Font Metrics file (Unix/Mainframe) [34]

.BFX

Fax document file (BitFax) [34]

.BG

Microsoft Backgammon Game file [34]

.BGA

OS/2 Graphic array [34]

.BGI

Borland Graphics Interface Driver [34]

.BGL

Microsoft Flight Simulator Scenery file [34]

.BHF

pcAnywhere Host file [34]

.BI

Binary <http://WhatIs.techtarget.com/definition/0,,sid9_gci211661,00.html> file [34]

.BIB

Bibliography file (ASCII) [34]

.bib

bibtex LATEX bibliography source file. [40]

.BIB

Database [34]

.BIB

TeX/BibTeX Literature Database [34]

.BIF

GroupWise initialization file [34]

.BIF

Image Capture Board Binary Image black & white graphic [34]

.BIFF

XLITE 3D file [34]

.BIN

Binary <http://WhatIs.techtarget.com/definition/0,,sid9_gci211661,00.html> file [34]

.BIO

OS/2 Bios file [34]

.BIT

X11 Bitmap [34]

.BK

Backup file (Generic) [34]

.BK

JetFax Faxbook file [34]

.BK!

WordPerfect for Windows Document backup [34]

.BK$

Backup file (Generic) [34]

.BK1

WordPerfect for Windows Timed backup file for document window 1 [34]

.BK2

WordPerfect for Windows Timed backup file for document window 2 [34]

.BK3

WordPerfect for Windows Timed backup file for document window 3 [34]

.BK4

WordPerfect for Windows Timed backup file for document window 4 [34]

.BK5

WordPerfect for Windows Timed backup file for document window 5 [34]

.BK6

WordPerfect for Windows Timed backup file for document window 6 [34]

.BK7

WordPerfect for Windows Timed backup file for document window 7 [34]

.BK8

WordPerfect for Windows Timed backup file for document window 8 [34]

.BK9

WordPerfect for Windows Timed backup file for document window 9 [34]

.BKP

TurboVidion Dialog Designer Backup [34]

.BKS

IBM BookManager Read bookshelf file [34]

.BKS

Microsoft Works Spreadsheet Backup [34]

.BKW

FontEdit Fontset mirror image [34]

.BLB

Resource archive (DreamWorks),(Neverhood) [34]

.BLD

BASIC Bloadable picture file [34]

.BLK

Alias Wavefront Image [34]

.BLK

WordPerfect for Windows Temporary file [34]

.BM

Windows system Bitmap [34]

.BM1

Apogee BioMenace data [34]

.BMF

Corel Gallery file [34]

.BMK

Windows Help bookmark [34]

.bmp

Microsoft Bitmap file image format. [40]

.BMP

Windows or OS/2 bitmap [34]

.BN

Instrument bank file (AdLib) [34]

.BNK

Instrument Bank file (AdLib) [34]

.BNK

Sound effects bank file (Electronic Arts) [34]

.BOL

Compressed archive library file (Microsoft Booasm.arc) [34]

.BOM

Bill of materials file (Orcad Schematic Capture) [34]

.BOO

Microsoft Booasm.arc Compressed archive [34]

.BOOK

Adobe FrameMaker Book [34]

.BOX

Lotus Notes file [34]

.BPC

Business Plan Toolkit Chart [34]

.BPL

Borland Delphi 4 packed library [34]

.BPS

Microsoft Works Document [34]

.BPT

CorelDraw Bitmap fills file [34]

.BPX

Truevision Targa Bitmap [34]

.BQY

BrioQuery file [34]

.BR

Bridge Script [34]

.BRD

Eagle Layout file [34]

.BRK

Brooktrout Fax-Mail file [34]

.BRW

Application file associated with financial institution(s) loan applications [34]

.BRX

A file for browsing an index of multimedia options [34]

.BRZ

DbBRZ file for very large Db backup or restore [34]

.BS1

Apogee Blake Stone data file [34]

.BSA

BSARC Compressed archive [34]

.BSC

Apple II Compressed archive [34]

.BSC

Fortran Pwbrmake Object [34]

.BSC

MS Developer Studio (MSDev) browser information [34]

.BSP

Quake map file [34]

.BS_

Microsoft Bookshelf Find Menu shell extension [34]

.BTM

Batch <http://search390.techtarget.com/sDefinition/0,,sid10_gci211641,00.html> file used by Norton Utilities [34]

.BTR

Database file (Btrieve 5.1) [34]

.BUD

Backup disk for Quicken [34]

.BUG

Bugs and Problems file [34]

.BUN

CakeWalk Audio Bundle (a MIDI <http://WhatIs.techtarget.com/definition/0,,sid9_gci212572,00.html> program) [34]

.BUP

Backup [34]

.BUT

Buttons! Button definition [34]

.BUY

Movie data file [34]

.BV1

WordPerfect for Windows Overflow file below insert point in document 1 [34]

.BV2

WordPerfect for Windows Overflow file below insert point in document 2 [34]

.BV3

WordPerfect for Windows Overflow file below insert point in document 3 [34]

.BV4

WordPerfect for Windows Overflow file below insert point in document 4 [34]

.BV5

WordPerfect for Windows Overflow file below insert point in document 5 [34]

.BV6

WordPerfect for Windows Overflow file below insert point in document 6 [34]

.BV7

Wordperfect for Windows Overflow file below insert point in document 7 [34]

.BV8

WordPerfect for Windows Overflow file below insert point in document 8 [34]

.BV9

WordPerfect for Windows Overflow file below insert point in document 9 [34]

.BW

SGI Black and White image file [34]

.BW

Silicon Graphics Raw red,green and blue bytes file [34]

.BWB

Visual Baler Spreadsheet application [34]

.BWR

Kermit Beware buglist [34]

.BWV

Business Wave file [34]

.BYU

BYU Movie [34]

.BZ

Bzip compressed file (Inix) [34]

.bz

File compressed with the bzip compression algorithm/program. These files are mostly redundant now. The vast majority of files are compressed using the superior bzip2 program. [40]

.BZ2

Bzip compressed file (Unix) (replaces Bz) [34]

.bz2

File compressed with the bzip2 compression program. [40]

.B_W

Atari/Macintosh black and white graphic [34]

.C

C code [34]

.c

C program source code. [40]

.C

Site configuration for Secure Remote (CheckPoint VPN) [34]

.C--

Sphinx C-- Source code [34]

.C00

Ventura Publisher Print file [34]

.C01

Typhoon wave [34]

.C86

Computer Innovation (C86) Source code [34]

.CA

Telnet Server Initial cache data file [34]

.CAB

Microsoft cabinet file (program files compressed for software distribution) [34]

.CAC

dBase IV Executable file [34]

.CAD

Softdesk Drafix Cad file [34]

.CAG

Catalog file (Microsoft Clip Gallery v. 2.x,3.x,4.x) [34]

.CAL

Calendar schedule data file [34]

.CAL

CALS Compressed Bitmap [34]

.CAL

SuperCalc 4/5 Spreadsheet [34]

.CAM

Casio camera file [34]

.CAN

Navigator Fax [34]

.CAP

Compressed music file [34]

.CAP

Telix Session Capture file [34]

.CAP

Ventura Publisher Caption [34]

.CAR

AtHome assistant file [34]

.CAS

Comma-delimited ASCII file [34]

.CAT

dBase Catalogue file [34]

.CAT

Quicken IntelliCharge categorization file [34]

.CB

Microsoft clean boot <http://searchWin2000.techtarget.com/sDefinition/0,,sid1_gci211696,00.html> file [34]

.CBC

CubiCalc Fuzzy Logic System file [34]

.CBI

Column binary file (used in IBM mainframe systems) [34]

.CBL

Cobol Source code [34]

.CBM

XLib Compiled Bitmap [34]

.CBT

Generic Computer based training file [34]

.CC

C++ Source code [34]

.CC

Visual dBASE custom class file [34]

.cc, .cxx, .C, .cpp

C++ program source code. [40]

.CCA

cc:mail archive file [34]

.CCB

Visual Basic Animated Button configuration file [34]

.CCC

Curtain Call Native bitmap graphic [34]

.CCE

Data file (Calendar Creator Plus) [34]

.CCF

Multimedia Viewer configuration file used in OS/2 [34]

.CCF

Symphony Communications Configuration file [34]

.CCH

Corel Chart [34]

.CCL

Intalk Communication Command Language [34]

.CCM

Lotus CC:Mail "box" file (for example, INBOX.CCM) [34]

.CCO

CyberChat data file [34]

.CCO

XBTX Graphics [34]

.CCT

Macromedia Director Shockwave cast file [34]

.CDA

CD Audio Track [34]

.CDB

CardScan Database (CardScan) [34]

.CDB

Clipboard file [34]

.CDB

Conceptual model backup file (PowerDesigner) [34]

.CDB

TCU Turbo C Utilities Main database [34]

.CDF

<http://searchWebServices.techtarget.com/sDefinition/0,,sid26_gci213841,00.html> Microsoft Channel Definition Format [34]

.CDF

Netcdf Graphic file [34]

.CDFS

Compact Disk filing system (WindRiver) [34]

.CDI

Phillips Compact Disk Interactive file [34]

.CDK

Atari Calamus Document [34]

.CDM

Conceptual data model file (PowerDesigner Data Architect) (Sybase) [34]

.CDM

Conceptual model file (PowerDesigner) [34]

.CDM

Visual dBASE custom data module [34]

.CDR

Corel Draw Vector drawing file [34]

.CDR

Raw Audio-CD data file [34]

.CDT

Corel Draw template [34]

.CDT

CorelDraw Data file [34]

.CDX

Corel Draw compressed drawing [34]

.CDX

Microsoft's Visual Foxpro <http://searchDatabase.techtarget.com/sDefinition/0,,sid13_gci213705,00.html> index [34]

.CE

The FarSide Computer Calendar Main CE file [34]

.CEG

Tempra Show Bitmap graphic [34]

.CEL

AutoDesk Animator Cel Image [34]

.CEL

CIMFast Event Language file [34]

.CER

Certificate file (MIME x-x509-ca-cert) [34]

.CF

Imake Configurtion file [34]

.cf, .cfg

Configuration file or script. [40]

.CFB

Comptons Multimedia file [34]

.CFG

Configuration file [34]

.CFL

CorelFLOW Chart [34]

.CFM

ColdFusion <http://searchDatabase.techtarget.com/sDefinition/0,,sid13_gci211812,00.html> template [34]

.CFM

Corel FontMaster file [34]

.CFM

Creative FM-Music [34]

.CFM

Visual dBASE Windows customer form [34]

.CFN

Atari Calamus Font data file [34]

.CFO

TCU Turbo C Utilities C form object [34]

.CFP

The Complete Fax Portable fax file [34]

.CGA

Ventura Publisher Display font file [34]

.CGI

<http://searchDatabase.techtarget.com/sDefinition/0,,sid13_gci213846,00.html> Common gateway interface script [34]

.cgi

Executable script that produces web page output. [40]

.CGM

Computer Graphic Metafile [34]

.CH

Clipper 5 Header [34]

.CH

OS/2 configuration file [34]

.CH3

Harvard Graphics 3.0 Chart [34]

.CH4

Charisma 4.0 Presentation [34]

.CHD

FontChameleon Font descriptor [34]

.CHF

pcAnywhere remote control file [34]

.CHI

ChiWriter Document [34]

.CHK

File fragments saved by Windows Disk Defragmenter or ScanDisk [34]

.CHK

WordPerfect for Windows Temporary file [34]

.CHL

Configuration History Log [34]

.CHM

Compiled HTML file [34]

.CHN

Ethnograph Data file [34]

.CHP

Ventura Publisher Chapter file [34]

.CHR

Character Sets (Font file) [34]

.CHT

ChartMaster dBase Interface file [34]

.CHT

ChartViewer file [34]

.CHT

Harvard Graphics Vector <http://WhatIs.techtarget.com/definition/0,,sid9_gci528553,00.html> file [34]

.CIF

CalTech Intermediate Graphic [34]

.CIF

Easy CD Creator image [34]

.CIF

pcAnywhere caller file [34]

.CIL

Clip Gallery download package file [34]

.CIM

Sim City 2000 file [34]

.CIN

OS/2 change control file that tracks changes to an INI file [34]

.CIX

TCU Turbo C Utilities Database Index [34]

.CK1

iD/Apogee Commander Keen 1 data [34]

.CK2

iD/Apogee Commander Keen 2 data [34]

.CK3

iD/Apogee Commander Keen 3 data [34]

.CK4

iD/Apogee Commander Keen 4 data [34]

.CK5

iD/Apogee Commander Keen 5 data [34]

.CK6

iD/Apogee Commander Keen 6 data [34]

.CKB

Borland C++ Keyboard mapping file [34]

.CL

Generic LISP Source code [34]

.CL3

Layout file (Adaptec Easy CD Creator) [34]

.CLASS

Java class [34]

.CLG

Disk Catalog database [34]

.CLL

Cricket Software Clicker File [34]

.CLO

Cloe Image [34]

.CLP

Clipper 5 Compiler Script [34]

.CLP

Quattro Pro Clip art [34]

.CLP

Windows Clipboard [34]

.CLR

1st Reader Binary color screen image [34]

.CLR

PhotStyler Color defintion [34]

.CLS

C++ Class Definition [34]

.CLS

Visual Basic Class Module [34]

.CM

Craftman Data [34]

.CMA

Database file in plain text format (APPLIX TM1) [34]

.CMD

1st Reader External Command Menu [34]

.CMD

Command file for Windows NT (similar to a DOS .BAT file), OS/2 [34]

.CMD

dBase-II program file [34]

.CMD

DOS CP/M command file [34]

.CMF

Corel Metafile [34]

.CMG

Chessmaster saved game [34]

.CMK

Card Shop Plus file [34]

.CMM

CEnvi Batch file [34]

.CMP

Address document [34]

.CMP

CorelDRAW 4.0 Postscript Printer Header [34]

.CMP

JPEG <http://searchWebServices.techtarget.com/sDefinition/0,,sid26_gci212425,00.html> Bitmap [34]

.CMP

Microsoft Word for DOS User dictionary [34]

.CMP

Route 66 Address Document [34]

.CMR

MediaPlayer Movie [34]

.CMV

Corel Move animation [34]

.CMX

Corel Presentation Exchange image [34]

.CMYK

Raw cyan, magenta, yellow, and black bytes file [34]

.CNC

CNC General Program data [34]

.CNF

Configuration file used by Telnet, Windows, and other applications with varying internal formats [34]

.CNM

Windows application menu options and setup file [34]

.CNQ

Compuworks Design Shop file [34]

.CNT

Windows (or other) system content files for the help index and other purposes [34]

.CNV

Conversion files (WS_FTP Pro) files that will be converted from (Example) "HTML-"HTM" for upload [34]

.CNV

Word for Windows Data conversion support file [34]

.CNV

WordPerfect for Windows Temporary file [34]

.COB

COBOL Source code [34]

.COB

trueSpace 2 object [34]

.COD

dBase Application Generator Template source file [34]

.COD

FORTRAN Compiled code [34]

.COD

Microsoft C compiler output as displayable machine language/assembler with original C as comments [34]

.COD

Video Text file [34]

.COL

AutoDesk Animator Color Palette [34]

.COL

Microsoft Multiplan Spreadsheet [34]

.COM

Command file (program) [34]

.Compiler

attempts to compile the source files of a Help system [34]

.CON

Simdir Configuration file [34]

.conf, .config

Configuration file. [40]

.CP8

CP8 256 Gray Scale image [34]

.CPD

Complaints Desk Script [34]

.CPD

Corel PrintOffice file (drawing) [34]

.CPD

Fax Cover document [34]

.CPE

Fax Cover document [34]

.CPF

The Complete Fax (Fax file) [34]

.CPH

Image file (Corel Print House) see CPO [34]

.CPI

ColorLab Processed Image bitmap [34]

.CPI

Microsoft MS-DOS code page information [34]

.CPJ

CeQuadrant CD Project [34]

.CPL

Compel Presentation [34]

.CPL

Control Panel Module [34]

.CPL

Corel color palette [34]

.CPO

Image file (Corel Print Office) [34]

.CPP

C++ Source code [34]

.CPP

CA-Cricket Presents presentation [34]

.CPR

Corel Presents presentation [34]

.CPS

Central Point PC Tools Backup [34]

.CPS

Coloured postscript [34]

.CPT

CA-Cricket Presents Template [34]

.CPT

Corel Photo-Paint image [34]

.CPT

dBase Encrypted Memo [34]

.CPT

Macintosh Compressed Archive [34]

.CPX

Corel Presentation Exchange compressed drawing [34]

.CPY

Data file (Copy Books) [34]

.CPZ

COMPOZ Music Text [34]

.CRC

Check file (Win-SFV32) (Fantasia Software) [34]

.CRC

Circular reference file (Pro/Engineer) [34]

.CRD

Microsoft Windows 3.x Cardfile [34]

.CRF

Zortech C++ cross-reference [34]

.CRH

Image file (Microsoft Golf) [34]

.CRP

Corel Presents run-time presentation [34]

.CRP

dBase IV Encrypted database [34]

.CRP

Visual dBASE custom report [34]

.CRS

WordPerfect 5.1 for Windows File Conversion resource [34]

.CRT

Certificate file [34]

.CRT

Crontab file) [34]

.CRT

Oracle Terminal settings information [34]

.CRU

CRUSH Compressed archive [34]

.CSA

Comma deliminated text [34]

.CSC

Corel script [34]

.CSG

Statistica/w Graph file [34]

.CSH

C shell script files (Hamilton Labs) [34]

.csh

csh shell script. [40]

.CSM

Borland C++ 4.5 Precompiled header [34]

.CSM

Script file (Kodak Dc265 Camera) [34]

.CSO

Customer service data and outcome file [34]

.CSP

PC Emcee On-Screen image [34]

.CSS

<http://searchWebServices.techtarget.com/sDefinition/0,,sid26_gci211749,00.html> Cascading Style Sheet (MIME) [34]

.CSS

Statistica/w Datasheet [34]

.CSS

Stats+ Datafile [34]

.CST

Macromedia Director "Cast" (resource) file [34]

.CSV

Comma-separated values file [34]

.CSV

CompuShow Adjusted EGA/VGA Palette [34]

.CT

A graphic file associated with the Paint Shop Pro Graphic Editor [34]

.CT

Scitex CT bitmap [34]

.CTC

PC Installer Control [34]

.CTF

Symphony Character code translation [34]

.CTL

dBase IV Control [34]

.CTL

Used in general for files containing control information. FAXWorks uses it to keep information about each fax sent and received. [34]

.CTX

Microsoft Online Course Text [34]

.CTX

Pretty Good Privacy (PGP) Ciphertext file [34]

.CTX

Visual Basic User control binary file [34]

.CUE

Microsoft Cue Cards data [34]

.CUL

Cursor library file (IconForge) [34]

.CUR

Windows Cursor [34]

.CURSOR

Sun Microsystems Cursor [34]

.CUT

Dr Halo Bitmap [34]

.CV

Corel Versions archive [34]

.CV

Microsoft CodeView information screen [34]

.CVG

Image [34]

.CVS

Canvas drawing file [34]

.CWK

Claris Works data [34]

.CWS

Claris Works template [34]

.CXT

Macromedia Director protected (not editable) "Cast" (resource) file [34]

.CXX

C++ source code [34]

.D2D

2D/3D object file (3-D Fassade Plus) [34]

.D64

Commodore 64 emulator disk image [34]

.DAO

Windows Registry Backup [34]

.DAP

Data access page (Microsoft Access 2000) [34]

.DAT

A data file extension used to designate an error message in a [34]

.DAT

Data file [34]

.DAT

Extension used for some MPEG <http://WhatIs.techtarget.com/definition/0,,sid9_gci212601,00.html> files [34]

.DAT

WordPerfect Merge Data [34]

.DB

Borderland's Paradox 7 table database [34]

.db

Database file. [40]

.DBC

Microsoft's Visual FoxPro <http://searchDatabase.techtarget.com/sDefinition/0,,sid13_gci213705,00.html> database container file [34]

.DBF

A dBASE file, a format originated by Ashton-Tate, but understood by Act!, Clipper,FoxPro, Arago, Wordtech, xBase, and similar database or database-related products. [34]

.DBF

Enable database (can be opened with Excel 97) [34]

.DBF

Oracle 8.1.x tablespace file [34]

.DBK

dBase Database Backup [34]

.DBK

Schematic backup file (Orcad Schematic Capture) [34]

.DBO

Compiled program file (dBase IV) [34]

.DBQ

Paradox Memo [34]

.DBT

dBase Text Memo [34]

.DBV

Memo field file (Flexfile 2) [34]

.DBW

Microsoft Windows 9.x Database file (DataBoss) [34]

.DBX

DataBeam image [34]

.DBX

Microsoft's Visual FoxPro <http://searchDatabase.techtarget.com/sDefinition/0,,sid13_gci213705,00.html> Table file [34]

.DC

CAD file (DesignCAD) [34]

.DC2

CAD file (DesignCAD) [34]

.DC5

DataCAD Drawing [34]

.DCA

Document Content Architecture Text file (IBM DisplayWrite) [34]

.DCA

Visual Basic Active designer cache [34]

.DCF

Data file (Dyadic) [34]

.DCF

Disk Image file [34]

.DCIM

Digital Imaging and Communications in Medicine (image and data) [34]

.DCM

DCM module [34]

.DCP

Data CodePage (OS/2) [34]

.DCR

Shockwave file [34]

.DCS

Bitmap Graphics (Quark XPress) [34]

.DCS

Datafile (ACT! Activity file) [34]

.DCS

Desktop Color Separation file [34]

.DCT

Database Dictionary file (Clarion Database Developer) [34]

.DCT

Database SpellCheck Dictionary (Harvard Graphics 3.0-Symphony) [34]

.DCT

Microsoft's Visual FoxPro <http://searchDatabase.techtarget.com/sDefinition/0,,sid13_gci213705,00.html> database container file [34]

.DCU

Delphi compiled unit [34]

.DCX

Bitmap Graphics file (Multipage PCX) [34]

.DCX

Fax image (based on PCX) [34]

.DCX

Macro file [34]

.DCX

Microsoft's Visual FoxPro <http://searchDatabase.techtarget.com/sDefinition/0,,sid13_gci213705,00.html> database container file [34]

.DD

Compressed Archive (Macintosh DISKDOUBLER) [34]

.DDB

Bitmap Graphics file [34]

.DDF

Btrieve or Xtrieve Data Definition File, which contains metadata <http://searchDatabase.techtarget.com/sDefinition/0,,sid13_gci212555,00.html> describing a Btrieve or Xtrieve file [34]

.DDI

Image File (DISKDUPE) [34]

.DDIF

Digital Equipment or Compaq file. Used for storing images and their [34]

.DDP

Device Driver Profile (OS/2) [34]

.deb

Debian package for the Debian distribution. [40]

.DEB