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Unix Commands


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List of Unix Commands

#:Used to make comments in a shell script or tells which shell to use as an interpreter for the script.
.:Reads commands from a script and execute them in your current environment.
/etc/defaultrouter:Defines the systems default routers. Values must be separated with whitespace, # can be used for comments.
/etc/gateways:Contains all the routes and default gateways for the system.
/etc/hostname.interface:Contains the hostname of the system and should match the hostname defined in the /etc/hosts file. The file is named with the interface name, such as hostname.hme0 or hostname.le0
/etc/hosts:Configures names and aliases of IP-addresses. Fields should be separated with Tab or white space.
/etc/inetd.conf:Is the Internet services database ASCII file which contains a list of available network services.
/etc/inetd.conf:Is the Internet server database ASCII file that contains a list of available servers. Is invoked by inetd when it gets an Internet request via a socket.
/etc/inetd.conf:Is the Internet server database, used by the inetd daemon, which contains a list of available network services.
/etc/inittab:Is a script used by init. Controls process dispatching.
/etc/inittab:Controls process dispatching. Used by init.
/etc/inittab:Is a script used by init. Controls process dispatching.
/etc/lilo.conf:Is the configuration file used by the Linux Loader while booting.
/etc/modules.conf:Loads modules specific options at startup.
/etc/mygate:Defines the systems default router or gateway.
/etc/myname:Specifies the real host name for the system.
/etc/netsvc.conf:Specifies how different name resolution services will look up names.
/etc/nodename:Specifies the real hostname for the system.
/etc/nologin:Is a text file that, if it exists in /etc/, will prevent non-root users from logging in. If a user attempts to login, it will be shown the contents of the file, and then be disconnected.
/etc/nologin:Is a text file message that is shown to the user who tries to log on during a system shutdown process. After the message appears the log on procedure ends.
/etc/nsswitch.conf:Specifies how the lookup for different databases are performed and in what order. Lookups are done left to right.
/etc/nsswitch.conf:Specifies how the lookup for different databases is done and in what order.
/etc/printcap:Describes printers and allows dynamic addition and deletion of printers by the spooling system.
/etc/printcap:Describes printers and allows dynamic addition and deletion of printers by the spooling system.
/etc/rc.conf:Is a configuration file used to configure the system daemons. It has three sections, the first turns features on or off, the second turns daemons on or off and the third sets parameters for the
/etc/resolv.conf:Configures the system's network. Specifies hostname and gateway.
/etc/xinetd.conf:Contains the configuration for the extended internet services started by the xinetd command.
a2p:Transforms awk scripts to perl scripts, and shows the result on STDOUT.
ab:Benchmarks your Apache server by sending requests to it.
ab:Benchmarks your Apache server by sending requests to it.
ab:Benchmarks your Apache server by sending requests to it.
ab_admin:Manages an AnswerBook card catalog database through a shell-level interface. Will enable administrators to delete, add, list, verify and modify AnswerBook entries.
ac:Shows how long a user or users have been logged in.
ac:Counts how long a user or users have been using their accounts.
accept:Enables the printer queue specified to receive print requests.
access:Checks whether if a file can be accessed. Exits successfully if the file can be accessed with the specified mode.
accessx:Configures the keyboard for use by people with disabilities. Requires OpenWindows version 3.4 or later.
acctcms:Creates a summary of command usage using accounting records. Shows the result to STDOUT.
acctcms:Reads one or more files, adds the records for processes that execute commands that have the same name , and then shows a summary.
acctcom:Reads the specifed files, or the file /var/adm/pacct, and searches for account information.
acctcom:Reads files, STDIN, or /var/adm/pacct, and searches the files for account information. Shows the information as described by acct to STDOUT.
acctcon:Reads login/logoff records from STDIN and converts them to total accounting records.
acctcon1:Converts login/logoff records into ASCII output. Uses STDIN or reads from the wtmp file located in /var/adm/.
acctcon1:Converts login/logoff records into ASCII. It reads from STDIN or the wtmp file in /var/adm/.
acctcon2:Reads the ASCII records created from acctcon1 and converts them into total accounting (tacct) records
acctcon2:Reads the ASCII records created by acctcon1 and converts them into total accounting (tacct) records.
acctdisk:Reads the output lines from diskusg or acctdusg from STDIN, creates total accounting records for each individual record, and then writes to STDOUT.
acctdisk:Converts information regarding transferred disk blocks by userID or login name by reading the accounting file (usually /var/adm/pacct) and then creates total accounting records.
acctdusg:Calculates disk resource consumption for users. Reads from STDIN.
acctdusg:Calculates disk resource consumption for users. Reads from STDIN.
acctmerg:Merges or adds accounting files in the total accounting (tacct) or ASCII format.
acctmerg:Merges or adds accounting files in the total accounting (tacct) or ASCII format.
accton:Outputs process accounting to the specified file. If no file name is given, turns process accounting off.
accton:Outputs process accounting to the specified file. Without file, process accounting will be turned off.
accton:Outputs process accounting to the specified file. If no file name is given, will turns process accounting off.
acctprc1:Converts information created with acct, and adds the login names that corresponds with the user IDs.
acctprc1:Converts information created with acct and adds the login names that corresponds with the user IDs.
acctprc2:Reads records from STDIN in the format created by acctprc1, sorts them by ID and name, and shows the result to STDOUT.
acctprc2:Reads records from STDIN in the format created by acctprc1, and sorts them by ID and name, and shows the result to STDOUT.
acctwtmp:Manages connect-time accounting records by writing a UTMP record to STDOUT.
acctwtmp:Writes an UTMP record with the current time and a string of characters that describe the reason, into specified file.
acfgd:Manages auto- configuration of PCMCIA devices.
acledit:Is an editor used to manage access control list (ACL) for a file.
aclget:Shows the access control information for a specific file.
aclput:Sets the access control list for a file.
actctrl:Configures the IBM Active 2000 ISDN device driver and downloads firmware into the ISDN card.
adb:Provides a controlled environment to examine files, and acts as an interactive general-purpose debugger.
adb:Provides a controlled environment to examine files. Is an interactive debugger to examine core files.
addbib:Creates, modifies or updates a library database of information. After executing, addbib gives step-by-step instructions and prompts for necessary information.
addbib:Creates, modifies, or updates a library database of information. After executing addbib it will give step-by-step instructions and prompt for necessary information.
addftinfo:Reads troff font file and adds font metric information that is used by the groff system.
addftinfo:Reads troff font file and adds font metric information that is used by the groff system.
addr:Shows information about network addresses. Will show you the hexadecimal format of the IP address.
addr2line:Shows file names and line numbers for a specified program addresses.
adduser:Adds a user to the system. Asks for required additional data that has not been specified on the command line.
addX11input:Collects X11 values and creates an X11 input extension record in the ODM database.
add_drv:Installs new device drivers in the computer and assigns device names.
adfutil:Merges MCA driver information from a diskette for PS/2 adapters into the ODM.
admin:Manages SCCS history files. SCCS history files have the form s.filename.
admin, sccs-admin:Manages SCCS history files. SCCS history files have the form s.filename.
admintool:Manages users and groups accounts in an X window environment. Also manages printers and allows installed software to be viewed.
adsl-connect:Is a user-space PPPoE client. It manages an ADSL connection and reestablishes a dropped connection.
adsl-setup:Is a PPPoE client configuration script. It is used for the adsl-start, adsl-stop and adsl-connect scripts.
adsl-start:Starts the Roaring Penguin user-space PPPoE client.
adsl-status:Shows status of the PPPoE link that was established by the Roaring Penguin user-space PPPoE client.
adsl-stop:Stops the Roaring Penguin user-space PPPoE client.
afbconfig:Configures AFB Graphics Accelerators and some X11 window defaults.
afm2tfm:Used to convert an Adobe font metric file to TeX font metric format.
afslog:Is used to gather AFS tokens for specified cells.
aixterm:Is an enhanced terminal emulator for X-window.
ali:Shows addresses for mail aliases.
ali:Shows addresses for mail aliases.
alias:Creates an alias for a command. If options aren't specified it will show all aliases.
aliasadm:Manages NIS+ aliases maps.
allneeded:Forces the calculation of all fonts that are needed to preview a set of dvi files.
alloc:Shows how much memory is used and free.
alloc:Shows how much memory is used and is free.
allocate:Assigns and manages device allocation and ensures that each given device is used by only one user at a time.
alog:Manages the systems log files.
alt_disk_install:Installs or clones an mksysb image on an alternate disk.
amd:Tries to automount a file system whenever a directory or file within it is accessed.
amq:Is used to determine the current state of the amd program.
anacron:Runs commands periodically
answer:Is a utility that secretaries can use for easily creating emails while recieving a phone call.
answerbook:Starts the AnswerBook browser where you can search for information online.
answerbook2:Starts up a browser and show online documentation from an AnswerBook2 server.
answerbook2_admin:Starts the Answerbook administration GUI interface in your default web browser and shows the URL http://localhost:8888 the management port for the AnswerBook server.
apm:Shows power status and can configure the server in standby or suspend mode.
apm:Shows the current power status or puts the system in standby or suspend mode.
apmd:Is a monitor daemon and works together with the APM BIOS driver in the OS kernel.
apmd:Monitors the APM pseudo-device and executes the actions requested by the apm command.
apmsleep:Sets the computer in suspend or sleep mode.
appletviewer:Executes Java applets outside the browser and shows them in a separate window.
apply:Applies parameters to a specific command.
apply:Runs the specified command once for every argument specified. A magic character followed by a number will be replaced by the remaining argument matching the number index.
appres:Shows how much resources are used by a specific application.
appres:Is used to show how many resources will be used by a specific application.
appres:Shows how much resources a specific application will use.
apptrace:Traces function calls that a specific program makes to shared libraries.
apropos:Shows all manual pages that contain the specified keywords, including the section number and a short description.
ar:Creates and updates library files. It combines files into a single archive file.
arch:Shows the hardware architecture of the current host.
arch:Is used to show the computers architecture.
arch:Shows the hardware architecture of the current host. All SunOs 5.x SPARC based systems report as sun4.
arithmetic:Is a simple math game that keeps track of progress and shows results after every twenty questions.
arithmetic:Is a simple math game that keeps track of progress and shows results after every 20 questions.
arp:Shows and alters the ARP table which is used to map MAC addresses to their assigned IP addresses.
arping:Ppings the destination address using arp packets on the specified interface.
arpsnmp:Saves the Ethernet/IP address pairings. Logs the activity to syslog and sends a report of the changes by e-mail.
arpwatch:Saves the Ethernet/IP address pairs. Logs the activity to syslog and sends a report of the changes by e-mail
as:Is an assembler that will create object files using assembly language source files as input.
as86:Assembles code for the 8086 to 80386 processors.
asa:Converts FORTRAN carriage control output to a printable format.
asa, fpr:Converts FORTRAN carriage control output to an AIX line printer format.
asa, fpr:Converts Fortran carriage control output to a printable format and sends it to STDOUT.
ascii-xfr:Sends or receives files in ASCII mode.
aset:Is a set of utilities used for security administration named Automated Security Enhancement Tool (ASET). Enables the administrator to analyze system files for permissions and attributes.
aset.restore:Resets system files to the same state as they where before ASET was installed.
ash, bsh:Is a shell similar to sh with similar features as system V shell.
askrunlevel:Allows selection of the operation mode at boot time.
aspell:Checks for misspelled words. It has filter for e-mail, sgml, and TeX.
aspell (2):More options
aspppd:Is a daemon that provides PPP services to connect to remote hosts. Automatically starts the connection when a PPP request is made.
aspppls:Initiates the link manager to allow incoming calls. This command is the actual login service that connects the incoming client to aspppd daemon on the host server.
at:Schedules commands to be executed at a later time.
atactl:Is used to control standard IDE and ATA controller devices.
atd:Runs jobs that are queued by at.
ate:Is an asynchronous terminal emulation program.
atmstat:Shows the status of ATM adapters.
atq:Shows any queued at jobs for the current user or for a specified user.
atrm:Removes jobs from the at or batch queues.
atrun:Runs jobs that are queued by the at command to run later. It is used for backward compatibility.
atrun:Runs jobs that are queued by the at command to run later.
audioctl:Shows and sets driver variables for various audio systems.
audioplay:Plays audio files and can copy a specified audio file to an audio device.
audiotool:Records, plays and edits audio data. Used only in X-window.
audit:Manages the way the audit daemon auditd performs.
audit:Manages the behavior of the audit daemon auditd.
auditbin:Is a daemon that manages bin files of audit information.
auditcat:Is the subsystem of the audit command that writes records to trail files.
auditconfig:Configures the audit parameters used by the kernel in order to use auditing.
auditconv:Converts audit records from older OSes to AIX version 4 format.
auditd:Is the daemon that manages auditing and uses the audit control file to set working environment.
auditmerge:Merges two or more audit trail files into one single trail file.
auditpr:Shows or prints audit records.
auditreduce:Selects and merges audit records collected from audit trail files.
auditselect:Shows all audit records that match the specified criteria.
auditstat:Shows kernel audit statistics as well as other useful information about the kernel.
auditstream:Copies records from the audit device to STDOUT in binary format.
authconfig:Configures /etc/sysconfig/network to support NIS.
autoconf6:Configures IPv6 network interfaces at startup.
autoexpect:Inspects your actions in a command and creates an expect script that recreates your interactions.
autoload:Marks the function for auto loading.
automount:Installs mount points for automatic mounting upon requests from users. Uses automount maps to relate to each mount point that has been installed.
automount:Installs mount points automatically upon user requests. It associates automount maps to an installed mount point.
automountd:Is the daemon that manages mount and unmount requests made by the autofs kernel extension.
automountd:Is the daemon that manages mount and unmount requests made by autofs.
autopush:Configures a list of modules that will be automatically streamed when a device is opened.
autopush:Configures a list of modules that will be automatically streamed when a device is opened.
avmcapictrl:Configures active AVM ISA cards.
avmcapictrl(2):Loads the firmware to an active AVM ISA card.
awk:Scans the input file or files for lines that match the specified pattern in 'scriptstr' or from a file.
awk, nawk:Scans the input file or files for lines that match the specified pattern in ' scriptstr ', or from a file.
backup:Is a backup program that can backup file systems or files to a tape or a diskette.
bad144:Shows or writes hard disk bad sector information in standard DEC 144 format.
badblocks:Searches a device for bad blocks.
badsect:Creates files over the bad sectors so that no other files can use the bad sectors.
banner:Shows the specified strings in large letters on STDOUT.
basename:Removes the prefix and suffix from a string and shows the output to STDOUT.
bash:Is the GNU Bourne-again shell. It's compatible with the Bourne shell, with additional functions from Korn and C-shell.
bash, sh:Is a free version of Bourne-shell with many features from C- TC- and Korn shell.
bashbug:Creates and sends bug reports about the bash shell to the address specified.
batch:Executes commands at a future time when the system load level permits. The commands is read from STDIN.
battery:Shows battery information.
bc:Reads a file or STDIN and uses a C-like arithmetic language. Acts as a pre-processor for the command dc.
bcc:It is the Bruce's C compiler. A simple C compile that use K&R C syntax.
bdconfig:Configures the SunButtons and SunDials stream, autopush facility, and the serial device to use with the stream.
bdes:Encrypts or decrypts from STDIN to STDOUT. It uses the Data Encryption Standard (DES).
bdftopcf:Compiles a font for the X server and the font server. It converts BDF-fonts into PCF-fonts.
bdiff:Compares files that are too large for the command diff.
bdiff:Compares files that are too large for the command diff.
bellmail:Shows or sends messages to users in the system.
bf:Shows the amount of memory an application is using.
bffcreate:Creates backup files of an installation image in bff format to support software installations.
bfrpt:Shows output from the bf command in a readable format.
bfs:Scans big files to identify sections. Supports all command operators from the command ed.
bfs:Scans big files to identify sections and can be used like ed. Default it will show the size of the file.
bg:Places the specified job in the background.
bicheck:Checks the syntax for bosinst.data files that have been modified by a user.
biff:Enables or disables mail notification. If no arguments are used, shows the current status.
biff:Enables or disables mail notification. If no arguments are used, it will show the current status.
biff:Enables or disables mail notification. If no arguments are used, shows the current status.
bind:Shows or binds key sequence to readline function or macro.
bind:Shows or bind key sequences to a readline function or macro.
binder:Binds applications, print methods, icons, colors or open methods to files.
bindkey:Binds keys to an edit command. All bindings will be shown if no options is specified.
bindkey:Binds keys to an edit command in the shell. Without any options, shows all bindings.
bindprocessor:Shows processors, or handles kernel thread bindings of a process.
biod:Is a daemon that manages client requests for files over NFS.
bison:Generates a parser program for specified grammar file.
bltin:Runs the internal command in the shell.
boot:Loads the system kernel, sets console baud rate and runs various machine-dependent commands.
bootinfo:Shows boot information.
bootlist:Manages the boot order in the system.
bootparamd:Is a daemon that provides necessary information to diskless clients for booting. It searches the bootparams database or the /etc/bootparams file.
bootpd:Sets up the Internet Boot Protocol server.
bootpd:Is the Internet Bootstrap Protocol server.
bootpef:Builds BOOTP extension files.
bootpgw:Acts as a gateway between subnets and forwards BOOTP requests and replies.
bootptest:Tests a BOOTP server. It listens for responses on the requests sent.
bootptodhcp:Converts between bootp and dhcp, or removes bootp entries from a dhcp configuration file.
bosboot:Copies or creates a boot image.
bosdebug:Enables, disables, or shows the status of debugging information on the system.
brconfig:Shows and controls bridge interfaces.
break:Exits from a for, foreach, while, select or until loop.
bs:"Compiles and interprets smaller programs
bsh:"Invokes the Bourne shell
bterm:Is a bidirectional terminal emulator.
bugfiler:Stores bug reports in a mail directory.
builtin:Forces the use of a shell that builtin commands.
builtin:Forces the use of a shell built-in command.
builtins:Shows all built-in commands in tcsh.
builtins:Shows all built-in commands in tcsh.
bunzip2:Decompresses bzip2 files.
bunzip2:Decompresses bzip2 compressed files.
burst:Allows a message to be split into several new messages.
burst:Allows a message to be split into several new messages.
busstat:Collects statistics and show buss performance counters.
bye:Leaves the shell. It's the same as exit.
bzcat:Decompresses a bzip2 file to STDOUT.
bzcat:Decompresses a bzip2 compressed file to STDOUT.
bzip2:Compresses, decompresses or tests bzip2 files.
bzip2:Is used to compress, decompress or test bzip2 files.
bzip2recover:Recovers data from a damaged bzip2 compressed file.
bzip2recover:Recovers data from a damaged bzip2 compressed file.
c++:Is a complete compiler for C, C++, and assembler.
c++:Is a complete compiler for C, C++ and Assembler.
c++filt:Organizes the C++ symbols.
c++filt:Organizes the C++ symbols.
c2ph, pstruct:Translates C code to Perl code.
cachefslog:Shows where the statistics for CacheFS are being logged. Can also redirects logs to another location, or stop logging.
cachefslog:Shows where the statistics for CacheFS are logged. Can also redirect the log or stop logging altogether.
cachefspack:Compresses or decompresses files and file systems located in cache.
cachefsstat:Shows various cache statistics like hits and misses about a cache file system that is mounted on a particular path.
cachefswssize:Shows the workspace size and the total cache size statistics for the cache log file specified. Shows how much cache is needed for each file system that is mounted under the cache.
cachefswssize:Shows the workspace size and the total cache size statistics for the specified cache log file.
caesar:Is used to decipher caesar crypto by reading from STDIN and showing the results to STDOUT.
cal:Shows the calendar for a selected month in the year, or the entire year.
calctool:Is a graphic desktop calculator that you can use with the mouse or the keyboard.
calendar:Reads from the calendar file and shows any scheduled events.
calendar:Reads from the default calendar file or from a specified one and shows any scheduled events.
calendar:Reads your calendar file and shows any notes that you have entered for today and tomorrow.
cancel:Kills print requests to the lp command. It stops print requests related to a specified queue or printer.
cancel:Terminates a printer job.
cancel:Kills print requests to printers or printerpools. It stops print requests related to the user name on any host or specifies a print request to stop.
canonls:Processes one or more troff command output for the Canon LASER SHOT in LIPS III mode.
captoinfo:Searches file for termcap descriptions and shows the equivalent terminfo description with any comments.
capture:Takes a screen dump of a terminal.
cap_mkdb:Creates a hashed capability database out of the termcap or terminfo logical databases.
cardctl:Administers and controls the state of PCMCIA sockets.
cardmgr:Manages and monitors PCMCIA card sockets and does automatic installation/uninstallation.
case:Matches each pattern successively against the word and run the commands when the first match is found.
cat:Shows files and can also combine several files into one file.
catman:Creates and manages the manual pages. It also creates and manages the windex database, which contains a short description of the commands.
catman:Creates and manages the manual pages and the windex database that contains short command descriptions.
cb:Reads the C source codes from STDIN or specified files and writes the code in a structured way to STDOUT.
cc:Is the C and C++ Compiler for Linux. See gcc or g++ for complete information.
cc:Is the C and C++ compiler for BSD. See gcc or g++ for complete information.
cc:Works as an interface for the BSD Compatibility Package C compiler. It only works if the SPROcc development package is installed.
cccp:Is a macro processor used to transform a program before compilation. Mainly used by the C compiler.
ccdconfig:Configures concatenated disk devices.
cd, chdir:Changes the working directory. If no directory is specified $HOME is used.
cdc, sccs-cdc:Alters the delta commentary of an SCCS delta. It can also be used to explain the commentary.
cdecl:Encodes or decodes C or C++ type declarations.
cdio:Is a CD audio player.
cdp, cdplay:Controls and plays audio CDs interactively or non interactively.
cdparanoia:Reads audio tracks from a CD-ROM drive that is CDDA compatible.
cdrecord:Records data or audio to a CD-ROM with the specified CD recorder.
certpatch:Adds subjectAltname to a PEM certificate. Signs the certificate with the signing key after the addition.
cfdisk:Controls and alters partitions on hard disk drives by use of interactive menus.
cfgif:Manages network interface instances in the system configuration database.
cfginet:Manages configuration of Internet instances and their interface instances.
cfgmgr:Configures devices and installs device software by running the programs specified in the Configuration Rules object class.
cfgqos:Manages the quality of service instances.
cflow:Analyzes the C and C++ and object files, and generates a flow graph of external references to STDOUT.
cfsadmin:Is a disk space administration utility for use with the cache File System (cacheFS).
cfsadmin:Is a disk space administration utility for use with the Cache File System (CacheFS).
chage:Alters or shows the user password expiry information for the specified user.
chargefee:Is an accounting command used to charge units to a login.
chargefee:Is an accounting command that is used to charge units to a login.
charset:Changes one of the two slots for character sets.
chat:Controls a conversation automatically between two computers over a modem connection.
chat:Is an automated chat program doing conversational exchange between the computer and the modem.
chattr:Alters the file attributes on a Linux second extended file system.
chauthent:Manages the authentication method for the system.
chclass:Manages workload management classes.
chcons:Redirects the system console to a specified device or file. The change is effective on the next startup of the system, and does not affect the current console system operation.
chdev:Changes the characteristics of a specified device, whether the device is in a defined, stopped, or available state.
chdisp:Changes the default display to use with the system.
chdoclang:Manages documentation language.
chdsmitd:Manages a domain from the DSMIT member list.
check-hostname:Checks to see if the host has a fully qualified host name which is needed by sendmail.
check-permissions:Checks permissions on sendmail files. Warns if permissions are not safe.
checkalias:Shows information about mail aliases.
checkcw:Manages the balance between left and right delimiters and .CW and .CN pairs.
checkeq:Creates a report of wrong or lost delimiters and equation start/end markers (EQ/EN). This is useful when you use the eqn and neqn language processors on a text file.
checkeq:Creates a report of wrong or lost delimiters and equation start/end markers (EQ/EN).
checkmm:Checks documents formatted with memorandum macros, checks syntax errors in files prepared for mm or mmt.
checknr:Checks nroff or troff files for errors such as missing delimiters and unknown commands.
checknr:Checks nroff or troff files for errors such as missing delimiters and unknown commands.
checknr:Checks nroff and troff files for errors such as missing delimiters and unknown commands.
checkpc:Administers information about entries in the printcap database.
chfilt:Manages filter rule definitions in a filter rule table.
chflags:Changes the flags/attributes for the specified files.
chfn:Is an interactive utility that changes a user's finger information.
chfn:Changes your finger information.
chfont:Changes the default font selected at boot time. You must have root authority to run this command.
chfs:Changes specified attributes of a file system.
chgif:Changes the configuration of a network interface instance.
chginet:Changes the configuration for Internet instances.
chgroup:Changes attributes for groups.
chgrp:Sets or changes the group ID for the file or files specified.
chgrpmem:Changes the administrators or members of a group.
chhwkbd:Changes keyboard attributes stored in the ODM database.
chio:Is a tool for controlling medium changers.
chitab:Changes records in the /etc/inittab file.
chkbd:Changes the software keyboard map to be loaded into the system at the next initial program load.
chkconfig:Administers runlevel information for system services.
chkey:Creates a new encryption key, asks for a password, and tells the ypupdated daemon to update the /etc/publickey file.
chkey:Alters a user's secret key pair and secure RPC public key.
chkfontpath:Configures the directories in the X font server path.
chlang:Manages language settings for the system or for a user.
chlicense:Changes the status of user-floating licensing for the system and changes the number of user-fixed licenses.
chlv:Is used to manage characteristics of a logical volume.
chlvcopy:Manages mirror copies on a logical volume.
chmaster:Runs the ypinit command and restarts the NIS daemons to change a master server.
chmod:Alters or assigns permissions to a file.
chnamsv:Manages TCP/IP based name service configuration on a host, but does not change the name server database.
chnfs:Manages how many biod and nfsd daemons to start.
chnfsexp:Manages export settings for directories to NFS clients.
chnfsmnt:Manages mount settings for a directory on an NFS server.
chown:Alters the ownership ID of files and also sets the group ID if it is specified.
chpass, chfn, chsh:Manages user databases, allowing editing of the information within.
chpasswd:Updates the passwords for a group of users with name and password pairs from STDIN.
chprtsv:Manages print service configurations.
chps:Changes attributes of a paging space.
chpv:Changes the characteristics of a physical volume in a volume group.
chque:Changes the queue name in the config file.
chquedev:Changes the queue device names of printer or plotter.
chrole:Manages role attributes.
chroot:Alters the root directory for a command.
chsec:Changes the attributes in the security stanza files.
chserver:Alters a subserver definition in the subserver object class.
chservices:Manages the /etc/services file.
chsh:Changes the login shell for the current user or for the specified user.
chsh:Changes your login shell.
chslave:Reruns the ypinit command to retrieve maps from a master server and restarts the ypserv daemon to change the slave server.
chssys:Manages subsystem definitions in the subsystem object class.
chsubserver:Manages the contents of the /etc/inetd.conf file.
chtcb:Changes or queries the specified trusted computing base attribute of a file.
chtun:Changes the tunnel definition between a local host and a partner host.
chtz:Manages the TZ environment variable in the /etc/environment file.
chuser:Changes the user attribute identified by the name. Manipulates local user data only.
chvfs:Changes entries in the /etc/vfs file.
chvg:Specifies characteristics of a volume group, and specifies if the group is automatically activated at system startup.
chvirprt:Changes the attribute values of a virtual printer.
chvt:Changes foreground virtual screen.
chypdom:Changes the current domain name of the system.
ci:Stores revisions in the specified revision control system files.
ci:Creates and stores revisions in the specified revision control system files.
cjpeg:Creates a JPEG/JFIF image from a specified image file or from STDIN.
ckdate:Prompts the user for a date format and then verifies the response.
ckgid:Prompts the user for a group ID and verifies the answer.
ckint:Prompts the user for an integer and then verifies the answer.
ckitem:Creates a menu and then prompts the user to select a menu option that will then be verified. Use this to define prompt, help, and error messages, and to define a default value.
ckkeywd:Prompts the user for a keyword and then verifies the response.
ckpacct:Sets the maximum file size for the process accounting file.
ckpacct:Sets the maximum file size for the process accounting file.
ckpath:Prompts the user for a path and verify the answer.
ckprereq:Checks whether the system level is compatible with the software being installed or updated.
ckstr:Prompts the user for a response and verifies the answer.
cksum:Calculates the checksum (CRC) and number of octets for each input file.
cktime:Prompts the user for a time format and then verifies the response.
ckuid:Prompts the user for a valid user name and verifies the answer.
ckyorn:Prompts the user for a yes or a no and verifies the answer.
clear:Clears the screen of all information if not disabled by your terminal environment.
clear_locks:Removes file, record and share locks that were made by an NFS client.
clinfo:Shows information about the cluster configuration on the node the command was executed.
clockdiff:Measures clock difference between computers with the resolution of 1 msec.
closewtmp:Places a false DEAD_PROCESS record into the file /var/adm/wtmp for each user logged in. It is then used by the command runacct to track each users connection time.
clri:Is used to clear inodes by writing zeros as the inode number.
clri, dcopy:Clears inodes by writing zeros on the specified inode number.
cm:Is the OpenWindows calendar manager. Useful in many ways as a reminder and scheduler.
cmap_alloc:Creates custom color maps for X11 clients that need to run programs that can not use the default color map.
cmap_compact:Reduces color map flashing by assigning color values towards the high end of 255 in the default color map.
cmdtool:Opens an enhanced terminal window that is used to run programs or shells.
cmp:Compares two files of any type and shows the line number and byte where the files differ.
cm_delete:Removes an appointments from the cm Calendar Manager.
cm_insert:Inserts an appointment into the cm Calendar Manager.
cm_lookup:Finds your appointments in the cm Calendar Manager.
co:Checks out a revision from a RCS file and stores it in the corresponding working file.
co:Checks out a revision from a RCS file and stores it in the corresponding working file.
codepage:Extracts code pages from a file.
col:Converts spaces to Tabs or Tabs to spaces in text files to create or modify columns.
colcrt:Removes underlines or shows them on new lines when filtering the nroff file for a CRT preview.
colcrt:Removes underlines or shows them on new lines filtering the nroff file for a CRT preview.
colcrt:Removes underlines or shows them on new lines filtering the nroff file for a CRT preview.
colorchooser:Allows you to change colors of icons for use in an X window environment.
colrm:Deletes selected columns from a file reading from STDIN to STDOUT.
colrm:Deletes selected columns from a file reading from STDIN to STDOUT.
colrm:Deletes selected columns from a file reading from STDIN to STDOUT.
column:Formats input into multiple columns.
column:Formats input into multiple columns.
comb:Creates a script that is used to recreate and combine older versions of SCCS files, s.files.
comb, sccs-comb:Creates a script that re-creates and combines older versions of SCCS files, s.files. All changes are saved in deltas, together with a version identification line (SID).
combine:Combines images together with new image.
comm:Compares two files and shows you the unique and common lines from both files.
command:Executes the command and will disable lookup functions in the current shell. Can also give information on how the command will be interpreted by the shell.
comp:Creates a mail message with a preconfigured form.
comp:Creates a mail message with a preconfigured form.
compgen:Generates possible completion matches for the specified word according to the option.
compile_et:Compiles error tables, converting them to a C source file usable with the com_err library.
complete:Declares how a command should be completed. Use the Tab key to perform the completion on the command line.
complete:Declares how a command should be completed.
compress:Compresses the size of a file and replaces the old file with a new file with the extension .Z. The new file will inherit the same permissions and modification times from the original file
comsat:Is a daemon that listens to the datagram port for any reports of incoming mail, and then notifies any users who have asked to be told of the mail delivery.
comsat:Is the daemon that listens to the datagram port for any reports of incoming mail and notifies users.
comsat, in.comsat:Listens for incoming mail and notifies users that have asked to be told when new mail comes (biff y).
confer:Starts an online conferancing system. The participants must type joinconf at the command line to join the conferance.
config:Creates kernel compilation directories and allows kernel configuration.
conflict:Reports conflicts between nmh and the transport system. Reports maildrops that are not owned by a user found on the system, or if a user owns more than one maildrop.
conflict:Reports conflicts between nmh and the mail transport system.
consadm:Shows console messages to the terminal or screen specifed. Can show messages on many screens at one time.
consolechars:Changes console screen font, screenfont map, and / or application-charset map.
consolehelper:Authenticates users via PAM and runs the program specified including any options the command may have.
consoletype:Shows the screen (console) type that is currently connected to STDIN.
constype:Shows the type of Sun console you are using by showing the Sun code.
continue:Doesn't run the remaining commands in the loop and continue to the next iteration. Can be used in the commands for, while, until, select and foreach.
convert:Converts image formats, colors, sizes, creates filter effects, rotations, sequences, and more.
conv_lp:Converts line printer configuration from a directory to an output file.
conv_lpd:Converts LPD configuration files between the printers.conf and the printcap formats.
coreadm:Manages the core files in the system.
cp:Copies files and directories to a new destination.
cpio:Copies files into and out of a cpio archive. It operates in three different modes.
cplv:Manages copying from one logical volume to another logical volume.
cpp:Is a C language preprocessor that insert include files in the source code of the source file creating a single file.
cproto:Creates C function prototypes and converts function definitions.
cpustat:Collects CPU statistics and shows performance counters.
cputrack:Uses CPU counters to monitor how a process behaves on the system.
cpu_state:Manages which processors on a multiprocessor system will be active on the next restart.
crash:Examines the image of the system memory of a currently running or crashed system. If no image file is specified, the current system is examined.
crash:Examines the image of the system memory of a currently running or crashed system.
createdb:Creates databases on a postgres server.
createlang:Adds new programming languages to the specified postgres database.
createuser:Creates users in a postgres database.
crfs:Adds a file system on a logical volume to a previously created volume group.
crle:Creates and displays runtime linking configuration files. If used with no or the -c option, it displays the configuration file. Otherwise, a new file is created.
cron, crond:Starts the cron daemon used to execute commands at scheduled dates and times specified in the crontab file.
cronadm:Shows or removes crontab or at jobs specified by parameters.
crontab:Views, creates, deletes, or edits the crontab file which contains a list of jobs including the time and date they will execute. If option isn't given read from STDIN.
crvfs:Creates entries in the /etc/vfs file.
crypt:Encrypts or decrypts a file. Uses STDIN and STDOUT.
csh:Is the C-shell command interpreter, which uses a syntax similar to the C language.
csh:Is the C-shell command interpreter that uses a syntax similar to the C language.
csh:Is the C shell command interpreter, which uses a syntax similar to the C language.
csplit:Splits all or part of a file into other files in the way specified with the arguments.
csplit:Splits whole or parts of a file into new files.
csplit:Splits all or part of a file into other files in the way specified by your arguments.
ct:Dials up a terminal modem trying each line listed in /etc/uucp/Devices until an available line is found, and initiates a login process to that terminal.
ct:Dials a phone number to a terminal modem and initiates a login process to that terminal.
ctags, etags:Inserts tags into programming source code files f that can act as markers making it easier to find section headings quickly and edit them using ex or vi.
ctlmp:Generates a PostScript format version from text files. Use it when you want to print text files.
ctm:Creates backup files by creating a delta between two directories.
ctm_dequeue:Sends all messages in the specified queue directory.
ctm_rmail:Decodes and reassembles delta files from mail files. Is used to send and receive ctm deltas via mail.
ctm_smail:Splits the specified delta file into multiple mail files. Is used to send and receive ctm deltas via mail.
ctrlaltdel:Sets the function of the Ctrl+Alt+Del buttons used when rebooting a computer.
cu:Connects to a remote computer or acts as a dial-in terminal.
cu:Connects you to a remote computer or acts as a dial-in terminal.
cu:Connects to a terminal on another UNIX system or even a non-UNIX system
cursor:Sets the cursor shape in a console virtual screen system.
custom:Enables users to customize X applications.
cut:Selects fields or columns from a text file or a table and shows the result to STDOUT.
cvs:Is a version control and logging system for files or directory tree structures including any versionable files.
cvs:Is a version control and logging system for files or directory tree structures including any versionable files.
cvsbug:Sends a CVS problem report to a central support site that runs GNATS.
cvsbug:Sends a CVS problem report to a central support site that runs GNATS.
cw:Will preprocess specific troff files containing English language text, for typesetting with the constant width font.
cxref:Creates a C and C++ program cross-reference listing, and writes to STDOUT a listing of all symbols in the processed files.
cytune:Configures the interruption threshold for the Cyclades driver.
dadmin:Used by the administrator to locally or remotely query and modify the status of the DHCP servers? databases.
date:Shows current date and time or sets the date and time on your computer.
dbmmanage:Manages DBM files with user names and passwords to authenticate HTTP users.
dbmmanage:Manages DBM files with user names and passwords to authenticate HTTP users.
dbmmanage:Manages DBM files with usernames and passwords to authenticate HTTP users.
dbx:Is a debug program for C, C++, Pascal and FORTRAN.
dc:Is a calculator that use reverse-polish notation. It use a stack to performs calculations.
dd:Copies and converts an input file to an output file.
ddate:Shows the date in the discordian date format.
deallocate:Disables access of a device for a user.
deallocvt:Disconnects the specified virtual terminal or terminals.
debugfs:Debugs the ext2 file system specified.
defaultbrowser:Launches the default Web browser and optionally loads a specified URL.
defragfs:Increases a file system's contiguous free space by reorganizing scattered allocations.
deleteX11input:Removes an X11 input extension record from the ODM database.
delta:Saves the changes made to an original SCCS file and creates a new delta ID for that version.
delta, sccs-delta:Saves the changes made to an original SCCS file and creates a new deltaID for that version. The SCCS utilities is a programming feature that helps to keep track of changes and versions.
depmod:Controls dependency descriptions for loadable kernel modules.
deroff:Removes command constructs made by nroff, troff, tbl or eqn from the specified files.
deroff:Removes macro calls, requests, table descriptions, and backslashes from nroff, troff, tbl, eqn, or text files.
deroff:Removes macro calls, requests, table descriptions, and backslash constructs from the specified nroff, troff, tbl, eqn, or text files and shows the result to STDOUT.
devattr:Shows the attribute values for a device.
devfree:Frees a device from exclusive use that was assigned exclusive use by the devreserv command.
devfsadm:Is used to create, update, and configure any /dev or /devices entries in the system.
devfsadmd:Manages any device configuration done by the command devfsadm.
devfseventd:Manages services for kernel event notification used by the devfsadmd command.
devinfo:Is used to show device specific and device partition information.
devinstall:Will installs software support for devices added after the initial OS installation.
devlinks:Creates /dev entries for various devices by creating symbolic links between the /dev directory tree and the device nodes in the /devices tree.
devnm:Shows the location where a device is mounted.
devnm:Shows the location where the device is mounted.
devreserv:Reserves devices for exclusive use. To remove the reservation, use the devfree command.
dev_mkdb:Creates the /dev directory from the database /var/run/dev.db.
df:Shows used and free disk space for all file system or the one specified.
dfmounts:Shows information about mounted devices.
dfsck:Checks and fixes two different drives file systems at the same time. Uses different options for each file system.
dfshares:Shows list of shared resources available from remote or local systems.
dga:Tests video modes for X-window by filling the screen with different colors each time a key is pressed.
dga:Tests video modes for X-window by filling the screen with different colors each time a key is pressed.
dhclient:Configures network interfaces to use DHCP.
dhcpaction:Is used as a configurable script that runs every time a client updates its lease.
dhcpagent:Is the client daemon for the Dynamic Host Configuration Protocol (DHCP).
dhcpcd:Requests an IP address from a DHCP server connected to the same network that your system is on.
dhcpcd:Manages requests for an IP address from a DHCP server.
dhcpconfig:Starts the DHCP service configuration utility.
dhcpd:It is a DHCP server that serves hosts with IP addresses on the network.
dhcpinfo:Shows DHCP information that is configured on your host and your network interfaces.
dhcpmgr:Is a graphical user interface used to manage the DHCP service on the local system.
dhcprd:Is used to manage forwarding of BOOTP and DHCP packets off the local network.
dhcpsconf:Is a GUI that will help you configure your DHCP server.
dhcpsd:Starts a DHCP server.
dhcrelay:Forwards BOOTP and DHCP requests from one subnet to another subnet.
dhcrelay:Forwards BOOTP/DHCP requests from a subnet whitout a DHCP server to a subnet that has a DHCP server.
dhtadm:Manages the DHCP configuration table.
diag:Is a diagnostic program that is used to perform hardware problem determination.
dialog:Shows boxes containing questions or messages from the shell.
diction:Is used to highlight messy sentences.
diff:Compares two text files in every line.
diff3:Compares the difference between three files.
diffmk:Compares two versions of a troff input file and then creates a third file.
diffmk:Compares two versions of a troff input file and then creates a third file.
diffstat:Creates statistic histograms from diff output.
dig:Gathers information from the DNS servers in interactive or batch mode.
dig:Gathers information from the DNS servers in interactive or batch mode.
dip:Controls dial-up or dial-in PPP connections. It dials using a specified dial-up script.
diplogin:Specifies the user name to login to the dial-in server that exists in the file /etc/diphosts.
dir:Shows files in the current directory or a specified directory.
dircmp:Compares the differences between two directories and shows a file listing of unique files.
dircmp:Compares two directories and shows a file list of the differences between them (unique files).
dircolors:Shows or sets LS_COLORS environment variable.
dirname:Shows everything up to the last level of the given path name.
dirs:Shows the directory stack with the most recent one to the left.
dis:Reads an object file and creates a list of assembly statements. The binary data is shown in octal or hexadecimal.
disable:Disables the specified printer from receiving additional print jobs sent using the lp command.
disable:Disables the printer specified from receiving additional print jobs sent by using the lpcommand.
disable:Disables names in the hash table. If no option is given, shows all disabled names.
disklabel:Shows, installs or modifies a hard disk label. Information in the disk label is used by the operating system.
disks:Creates /dev entries for hard disks attached to the system.
diskusg:Will create disk accounting data by user ID, and writes one record per user to STDOUT.
dislocate:Disconnects a session without logging off to enable you to reconnect to the same session from another location.
disown:Removes the specified job from the active job list.
disown:Removes the specified job from the active job list.
dispadmin:Shows or changes the parameters of the process scheduler on a running system.
dispgid:Shows a list of all the available groups that are defined on the system, one group per line.
display:Shows images on the screen in X-window. Multiple images can be shown.
dispuid:Shows a simple list of all valid user names on the system, one line per name.
djpeg:Decompresses the JPEG file specified and creates an image file on the STDOUT.
dmesg:Examines and controls the kernel ring buffer
dmesg:Is a tool for viewing the contents of the system message buffer.
dmesg:Shows diagnostic messages on STDOUT.
dminfo:Shows updates and information about a device in the device_maps file.
dnsdomainname:Shows the domain that you are in.
dnskeygen:Creates and maintains public, private, and shared secret keys for DNS servers.
dnsquery:Shows information about nameservers through BIND resolver library calls.
dnsquery:Shows information about nameservers through BIND resolver library calls.
docsearch:Runs a search program for AIX documentation files in the global library through a Web browser window.
docviewer:Is an X window application used to view Answer Book online documentation.
dodisk:"Runs disk accounting functions
dodisk:Runs disk accounting functions and is normally started by the cron command.
doexec:Runs a specified command showing it with another name passing the arguments provided.
domainname:Sets or shows the domain your system is configured for.
dos2unix:Converts text files from DOS format into the ISO standard format. With this you can import your old DOS textfiles.
dosdel:Deletes DOS files.
dosdir:Shows the directory for DOS files.
dosformat:Formats a DOS diskette.
dosfsck, fsck.msdos:Checks a DOS file system; can also be used to fix damaged DOS file systems.
dosread:Copies files between DOS and AIX.
doswrite:Is used to copy files between AIX and DOS.
download:Adds host resident fonts to files, and shows results on the STDOUT.
dp:Converts dates fitting the ARPA Internet standard (822-format).
dp:Converts dates fitting the ARPA Internet standard (822 format).
dpost:Converts files that have been created by troff into PostScript files and shows the result on STDOUT.
drm_admin:Administers servers based on the Data Replication Manager.
dropdb:Removes a postgres database specified from the system.
droplang:Connects to a postgres database and removes a selected programming language.
dropuser:Connects to a postgres database and removes the specified user.
drvconfig:Configures the /devices directory.
dscreen:Enables the physical terminal to connect to multiple screens or virtual sessions. A.K.A the Dynamic Screen utility.
dsdm:Manages drag-and-drop operations in an X window environment for databases.
dspcat:Shows all or specific messages in a message catalog.
dspmsg:Shows a specified message from a message catalog or a default message supplied as a parameter, on STDOUT.
ds_reg:Is a registration tool for documentation library service files.
ds_server_init:Reduces color map flashing within applications that requires colors by restricting applications to use colors.
dtaction:Allows non-CDE applications and shell scripts to be run in the X window environment.
dtbuilder:Makes it easier for developers to create applications that work well in the CDE.
dtchooser:Allows the user to choose host to login to. Is used by dtlogin and is not intended to run manually.
dtcodegen:Creates C, Motif, and CDE source code files from Builder Interface Language (BIL) files.
dtconfig:Integrates CDE with the operating system.
dtconvertvf:Converts VUE 3.0 action file-type database files into CDE 1.0 format. For the files to be recognized by CDE, the files must be named with .dt extension.
dtcreate:Creates actions and data types used to integrate applications into the CDE.
dterror.ds:Shows error messages from applications or actions that cannot be shown in the context of the executable program.
dtexec:Executes command actions. Is mostly used by the CDE and should not be started by users.
dtfile:Is the CDE File Manager. It is used to view, and manage files in the file system.
dtfile:Is the CDE file manager. It is used to view, and manage the file system.
dtfile_copy:Copies folders and subfolders with their content to the target folder. It deletes a file in the target folder if that file does not exist in the source folder.
dtfile_error:Shows an error dialog based on the specified message.
dtksh:This is a CDE extended version of the Korn shell. It gives access to many X, Xt, Xm, and CDE functions.
dtlp:Prints out a file specified. Is a command-line front-end to lp.
dtmail:Is a mail utility to read, send, and manage mail. It supports MIME, and Sun Mail Tool message formats, as well as IMAP4, to access remote mailboxes.
dtpad:Edits text files in the CDE environment.
dtpower:Manages system power.
dtprintinfo:Shows the print queue and print job status.
dtscreen:Is the CDE screen saver utility.
dtsearchpath:Sets the search paths for where the desktop is to look for application manager groups, filetypes and action definitions.
dtstyle:Manages desktop styles.
dtterm:Emulates a screen window. VALUE is always a minus (-) or a plus (+) symbol. Default is always the plus symbol except when using the -aw, -J, or -sb option.
dtwm:Is the CDE Window manager, which is based on the OSF/Motif window manager mwm.
du:Shows disk usage for a directory and its subdirectories.
dump:Takes selected parts of an object, archive, or executable file and dumps them.
dump:Takes selected parts of the object file arguments and dumps them.
dump, rdump:Is a backup program that examines files in an ext2 file system and determines if the files need to be backed up.
dump, rdump:Is a backup program that examines your ext2 file system and determine which files to be backed up.
dumpadm:Configures the crash dump of the operating system.
dumpcs:Shows the printable characters of the current locale.
dumpe2fs:Shows the super block and blocks group information of a file system present on a device.
dumpfs:Shows information about a specified device or file system.
dumpfs:Shows information about a device or a file system specified.
dumpkeys:Shows the contents of the keyboard translation tables on STDOUT.
dumpkeys:Shows the contents of the keyboard translation tables on STDOUT.
e:Is used to start the INed full-screen editor.
e2fsck, fsck.ext2:Checks Linux second extended file systems.
e2label:Shows or changes the label of an ext2 filesystem.
echo:Copies the written string to the screen. Exist as internal in all shells.
echotc:Exercises the terminal capabilities arguments.
echotc:Is used to exercise the terminal capabilities arguments.
ecpg:Is a preprocessor for embedded SQL code within C and Postgres programs.
ed:Is a line based editor. It is often used to edit files automatically in a script.
edit:Is just a simple line editor.
edit:Is a line based text editor for casual users. It works like ex with novice, report, and showmode set to on.
edquota:Manages user quotas for a ufs file system.
eeprom:Show or changes the values of parameters in the EEPROM.
egrep:Shows lines form the file that matches the given pattern using full regular expressions.
eiconctrl:Configures active Eicon ISDN cards.
eject:Ejects floppies and CDs from their drives. Works for VM managed devices and devices without eject buttons.
eject:Ejects a magnetic tape.
eject:Ejects floppies and CD's from their drives. Only works for VM-managed devices and devices without eject buttons.
elf2olf:Converts the specified ELF version module into the default OLF object module format.
elfdump:Shows information from selected parts of an object file.
elksemu:Emulates 8086 ELKS programs on an i386.
elm:Is an interactive mailer program that takes the place of mail and mailx.
elmalias:Shows information on specified elm aliases.
emacs:Edits text files, read and send mail, perform outline edits, compiles and run subshells.
emulate:Emulates other shells with Z-shell. C-shell will not be fully emulated.
enable:Enables printers to accept print requests from the lp command. Runs only on the print server.
enable:Enables or disables internal commands.
enable:Enables printers to print requests from the lp command. Runs only on the print server.
enable:Enables or disables bash internal commands.
encrypt:Shows the encrypted form of the string to the STDOUT.
enq:Enqueues and manages requests to a shared resource, such as a printer device.
enroll:Is used to create a password that can be used to implement a secure communication channel.
entstat:Is used to show statistics from the Ethernet device and it's driver.
env:Alters the current environment and invokes a utility or shows the current environment.
eqn, geqn:Preprocesses files for troff which contain mathematics equations.
errclear:Deletes entries from the error log file that are older than the specified number of days.
errdead:Extracts error records from a system dump file and adds them to the error log.
errdemon:Starts the error logging daemon.
errinstall:Is used to add messages into the error logging message sets.
erritem:Shows error messages that are used with the command ckitem.
errlogger:Creates an operator error log entry that contains an operator message.
errmsg:Is used to add a message into the errorlog message catalog.
error:Is used to insert compiler error messages into a source file.
error:Inserts compiler error messages into a source file.
errpt:Processes and generates a report from entries in an error log.
errstop:Stops the error logging daemon.
errupdate:Is used to manage entries in the error record template repository.
eval:Reads the argument as input to the shell and runs the resulting commands.
ex, e:Is a line base text editor. It is able to work on several files at the same time.
exec:Runs a command in place of the current shell. Usually another shell.
execerror:Writes error messages to STDERR, executed by an exec subroutine when load of a program is unsuccessful.
exit:Exits a shell or shell script with an exit status
expand:Replaces Tabs with spaces in text files. If no input files are specified STDIN will be used.
expect:Is used to automatically control interactive programs. It acts by reading commands from a file.
expectk:Is used to automatically control interactive programs. Is the same as expect, With Tk support.
expfilt:Exports filter rules to a text file that can be used by the command impfilt.
explain:Is an interactive thesaurus for english language phrases.
export:Exports a shell variable to environment.
exportfs:Translates exportfs options to share/unshare commands. Without options it shows a list of shared NFS file systems.
exportfs:Controls the exported file system table for NFS.
exportfs:Translates exportfs options to share/unshare commands. Without options it shows a list of all currently shared NFS file systems.
exportvg:Is used to export a volume group.
expr:Evaluates an expression and show the result to STDOUT.
exptun:Is used to export a tunnel definition.
exstr:Extracts strings from source files written in the C language surrounded by double quotes.
extcompose:Creates a file containing a reference to external files on the computer.
extendlv:Is used to increase the size of a logical volume.
extendvg:Is used to increase the number of disks in a volume group by adding a physical volume to the volume group.
ext_srvtab:Reads service key files from Kerberos key distribution center database.
f:Shows user information about users currently logged in to a host (same as the finger command).
face:Shows your files and folders on the screen. It uses a system of menus and forms.
factor:Finds the prime factor of a number. Also shows if the number is a prime factor.
faillog:Manages the summary of failures in /var/log/faillog.
false:Provides a false value in scripts, does nothing but always exits with a non zero-value.
fastboot:Restarts the system, but does not take the time to write data in memory to the disks.
fastboot:Restarts the system but does not take the time to write data in memory to the disks.
fasthalt:Stops the system immediately, and writes unsaved data to the disks.
fasthalt:Stops the system immediately.