| command |
Description |
| a2p |
Creates a Perl script from an awk script. |
| ac |
Prints statistics about users’ connect time. |
| alias |
Create a name for another command or long command string. |
| ar |
Maintain portable archive or library. |
| arch |
Display the architecture of the current host. |
| arp |
Manipulate the system ARP cache. |
| as |
An assembler. |
| at |
Command scheduler. |
| awk |
Awk script processing program. |
| basename |
Deletes any specified prefix from a string. |
| bash |
Command Bourne interpreter |
| bc |
Calculator. |
| bdiff |
Compare large files. |
| bfs |
Editor for large files. |
| bg |
Continues a program running in the background. |
| biff |
Enable / disable incoming mail notifications. |
| break |
Break out of while, for, foreach, or until loop. |
| bs |
Battleship game. |
| bye |
Alias often used for the exit command. |
| cal |
Calendar |
| calendar |
Display appointments and reminders. |
| cancel |
Cancels a print job. |
| cat |
View or modify a file. |
| cc |
C compiler. |
| cd |
Change directory. |
| chdir |
Change directory. |
| chekeq |
Language processors to assist in describing equations. |
| checknr |
Check nroff and troff files for any errors. |
| chfn |
Modify your own information or if super user or root modify another users information. |
| chgrp |
Change a groups access to a file or directory. |
| chkey |
Change the secure RPC key pair. |
| chmod |
Change the permission of a file. |
| chown |
Change the ownership of a file. |
| chsh |
Change login shell. |
| cksum |
Display and calculate a CRC for files. |
| clear |
Clears screen. |
| cls |
Alias often used to clear a screen. |
| cmp |
Compare files. |
| col |
Reverse line-feeds filter. |
| comm |
Compare files and select or reject lines that are common. |
| compress |
Compress files on a computer. |
| continue |
Break out of while, for, foreach, or until loop. |
| copy |
Copy files. |
| cp |
Copy files. |
| cpio |
Creates archived CPIO files. |
| crontab |
Create and list files that you wish to run on a regular schedule. |
| csh |
Execute the C shell command interpreter |
| csplit |
Split files based on context. |
| ctags |
Create a tag file for use with ex and vi. |
| cu |
Calls or connects to another Unix system, terminal or non-Unix system. |
| curl |
Transfer a URL. |
| cut |
Cut out selected fields of each line of a file. |
| date |
Tells you the date and time in Unix. |
| dc |
An arbitrary precision arithmetic package. |
| df |
Display the available disk space for each mount. |
| deroff |
Removes nroff/troff, tbl, and eqn constructs. |
| dhclient |
Dynamic Host Configuration Protocol Client. |
| diff |
Displays two files and prints the lines that are different. |
| dig |
DNS lookup utility. |
| dircmp |
Lists the different files when comparing directories. |
| dirname |
Deliver portions of path names. |
| dmesg |
Print or control the kernel ring buffer. |
| dos2unix |
Converts text files between DOS and Unix formats. |
| dpost |
Translates files created by troff into PostScript. |
| du |
Tells you how much space a file occupies. |
| echo |
Displays text after echo to the terminal. |
| ed |
Line oriented file editor. |
| edit |
Text editor. |
| egrep |
Search a file for a pattern using full regular expressions. |
| elm |
Program command used to send and receive e-mail. |
| emacs |
Text editor. |
| enable |
Enables / Disables LP printers. |
| env |
Displays environment variables. |
| eqn |
Language processors to assist in describing equations. |
| ex |
Line-editor mode of the vi text editor. |
| exit |
Exit from a program, shell or log you out of a Unix network. |
| expand |
Expand copies of file s. |
| expr |
Evaluate arguments as an expression. |
| fc |
The FC utility lists or edits and re-executes, commands previously entered to an interactive sh. |
| fg |
Continues a stopped job by running it in the foreground |
| fgrep |
Search a file for a fixed-character string. |
| file |
Tells you if the object you are looking at is a file or if it is a directory. |
| find |
Finds one or more files assuming that you know their approximate filenames. |
| findsmb |
List info about machines that respond to SMB name queries on a subnet. |
| finger |
Lists information about the user. |
| fmt |
Simple text formatters. |
| fold |
Filter for folding lines. |
| for |
Shell built-in functions to repeatedly execute action(s) for a selected number of times. |
| foreach |
Shell built-in functions to repeatedly execute action(s) for a selected number of times. |
| fromdos |
Converts text files between DOS and Unix formats. |
| fsck |
Check and repair a Linux file system. |
| ftp |
Enables ftp access to another terminal. |
| getfacl |
Display discretionary file information. |
| gprof |
The gprof utility produces an execution profile of a program. |
| grep |
Finds text within a file. |
| groupadd |
Creates a new group account. |
| groupdel |
Enables a super user or root to remove a group. |
| groupmod |
Enables a super user or root to modify a group. |
| gunzip |
Expand compressed files. |
| gview |
A programmers text editor. |
| gvim |
A programmers text editor. |
| gzip |
Compress files. |
| halt |
Stop the computer. |
| hash |
Remove internal hash table. |
| hashstat |
Display the hash stats. |
| head |
Displays the first ten lines of a file, unless otherwise stated. |
| help |
If computer has online help documentation installed this command will display it. |
| history |
Display the history of commands typed. |
| host |
DNS lookup utility. |
| hostid |
Prints the numeric identifier for the current host. |
| hostname |
Set or print name of current host system. |
| id |
Shows you the numeric user and group ID on BSD. |
| ifconfig |
Sets up network interfaces. |
| ifdown |
take a network interface down |
| ifup |
bring a network interface up |
| isalist |
Display the native instruction sets executable on this platform. |
| jobs |
List the jobs currently running in the background. |
| join |
Joins command forms together. |
| keylogin |
Decrypt the user’s secret key. |
| kill |
Cancels a job. |
| ksh |
Korn shell command interpreter. |
| ld |
Link-editor for object files. |
| ldd |
List dynamic dependencies of executable files or shared objects. |
| less |
Opposite of the more command. |
| lex |
Generate programs for lexical tasks. |
| link |
Calls the link function to create a link to a file. |
| ln |
Creates a link to a file. |
| lo |
Allows you to exit from a program, shell or log you out of a Unix network. |
| locate |
List files in databases that match a pattern. |
| login |
Signs into a new system. |
| logname |
Returns users login name. |
| logout |
Logs out of a system. |
| lp |
Prints a file on System V systems. |
| lpadmin |
Configure the LP print service. |
| lpc |
Line printer control program. |
| lpq |
Lists the status of all the available printers. |
| lpr |
Submits print requests. |
| lprm |
Removes print requests from the print queue. |
| lpstat |
Lists status of the LP print services. |
| ls |
Lists the contents of a directory. |
| mach |
Display the processor of the current host. |
| mail |
One of the ways that allows you to read/send E-Mail. |
| mailcompat |
Provide SunOS 4.x compatibility for the Solaris mailbox format. |
| mailx |
Mail interactive message processing system. |
| make |
Executes a list of shell commands associated with each target. |
| man |
Display a manual of a command. |
| mesg |
Control if non-root users can send text messages to you. |
| mii-tool |
View, manipulate media-independent interface status. |
| mkdir |
Create a directory. |
| mkfs |
Build a Linux file system, usually a hard disk partition. |
| more |
Displays text one screen at a time. |
| mount |
Disconnects a file systems and remote resources. |
| mt |
Magnetic tape control. |
| mv |
Renames a file or moves it from one directory to another directory. |
| nc |
TCP/IP swiss army knife. |
| neqn |
Language processors to assist in describing equations. |
| netstat |
Shows network status. |
| newalias |
Install new elm aliases for user or system. |
| newform |
Change the format of a text file. |
| newgrp |
Log into a new group. |
| nice |
Invokes a command with an altered scheduling priority. |
| niscat |
Display NIS+ tables and objects. |
| nischmod |
Change access rights on a NIS+ object. |
| nischown |
Change the owner of a NIS+ object. |
| nischttl |
Change the time to live value of a NIS+ object. |
| nisdefaults |
Display NIS+ default values. |
| nisgrep |
Utilities for searching NIS+ tables. |
| nismatch |
Utilities for searching NIS+ tables. |
| nispasswd |
Change NIS+ password information. |
| nistbladm |
NIS+ table administration command. |
| nmap |
Network exploration tool and security / port scanner. |
| nohup |
Runs a command even if the session is disconnected or the user logs out. |
| nroff |
Formats documents for display or line-printer. |
| nslookup |
Queries a name server for a host or domain lookup. |
| on |
Execute a command on a remote system, but with the local environment. |
| onintr |
Shell built-in functions to respond to (hardware) signals. |
| optisa |
Determine which variant instruction set is optimal to use. |
| pack |
Shrinks file into a compressed file. |
| pagesize |
Display the size of a page of memory in bytes, as returned by getpagesize. |
| passwd |
Allows you to change your password. |
| paste |
Merge corresponding or subsequent lines of files. |
| pax |
Read / write and writes lists of the members of archive files and copy directory hierarchies. |
| pcat |
Compresses file. |
| perl |
Perl is a programming language optimized for scanning arbitrary text files, extracting information from those text files. |
| pg |
Files perusal filters for CRTs. |
| pgrep |
Examine the active processes on the system and reports the process IDs of the processes |
| pico |
Simple and very easy to use text editor in the style of the Pine Composer. |
| pine |
Command line program for Internet News and Email. |
| ping |
Sends ICMP ECHO_REQUEST packets to network hosts. |
| pkill |
Examine the active processes on the system and reports the process IDs of the processes |
| poweroff |
Stop the computer. |
| pr |
Formats a file to make it look better when printed. |
| priocntl |
Display’s or set scheduling parameters of specified process(es) |
| printf |
Write formatted output. |
| ps |
Reports the process status. |
| pvs |
Display the internal version information of dynamic objects within an ELF file. |
| pwd |
Print the current working directory. |
| quit |
Allows you to exit from a program, shell or log you out of a Unix network. |
| rcp |
Copies files from one computer to another computer. |
| reboot |
Stop the computer. |
| red |
Line oriented file editor. |
| rehash |
Recomputes the internal hash table of the contents of directories listed in the path. |
| remsh |
Runs a command on another computer. |
| repeat |
Shell built-in functions to repeatedly execute action(s) for a selected number of times. |
| rgview |
A programmers text editor. |
| rgvim |
A programmers text editor. |
| rlogin |
Establish a remote connection from your terminal to a remote machine. |
| rm |
Deletes a file without confirmation (by default). |
| rmail |
One of the ways that allows you to read/send E-Mail. |
| rmdir |
Deletes a directory. |
| rn |
Reads newsgroups. |
| route |
Show / manipulate the IP routing table. |
| rpcinfo |
Report RPC information. |
| rsh |
Runs a command on another computer. |
| rsync |
Faster, flexible replacement for rcp. |
| rview |
A programmers text editor. |
| rvim |
A programmers text editor. |
| s2p |
Convert a sed script into a Perl script. |
| sag |
Graphically displays the system activity data stored in a binary data file by a previous sar run. |
| sar |
Displays the activity for the CPU. |
| script |
Records everything printed on your screen. |
| sdiff |
Compares two files, side-by-side. |
| sed |
Allows you to use pre-recorded commands to make changes to text. |
| sendmail |
Sends mail over the Internet. |
| set |
Set the value of an environment variable. |
| setenv |
Set the value of an environment variable. |
| setfacl |
Modify the Access Control List (ACL) for a file or files. |
| settime |
Change file access and modification time. |
| sftp |
Secure file transfer program. |
| sh |
Runs or processes jobs through the Bourne shell. |
| shred |
Delete a file securely, first overwriting it to hide its contents. |
| shutdown |
Turn off the computer immediately or at a specified time. |
| sleep |
Waits a x amount of seconds. |
| slogin |
OpenSSH SSH client (remote login program). |
| smbclient |
An ftp-like client to access SMB/CIFS resources on servers. |
| sort |
Sorts the lines in a text file. |
| spell |
Looks through a text file and reports any words that it finds in the text file that are not in the dictionary. |
| split |
Split a file into pieces. |
| stat |
Display file or filesystem status. |
| stop |
Control process execution. |
| strip |
Discard symbols from object files. |
| stty |
Sets options for your terminal. |
| su |
Become super user or another user. |
| sysinfo |
Get and set system information strings. |
| sysklogd |
Linux system logging utilities. |
| tabs |
Set tabs on a terminal. |
| tail |
Delivers the last part of the file. |
| talk |
Talk with other logged in users. |
| tac |
Concatenate and print files in reverse. |
| tar |
Create tape archives and add or extract files. |
| tbl |
Preprocessor for formatting tables for nroff or troff. |
| tcopy |
Copy a magnetic tape. |
| tcpdump |
Dump traffic on a network. |
| tee |
Read from an input and write to a standard output or file. |
| telnet |
Uses the telnet protocol to connect to another remote computer. |
| time |
Used to time a simple command. |
| timex |
The timex command times a command; reports process data and system activity. |
| todos |
Converts text files between DOS and Unix formats. |
| top |
Display Linux tasks. |
| touch |
Change file access and modification time. |
| tput |
Initialize a terminal or query terminfo database. |
| tr |
Translate characters. |
| traceroute |
Print the route packets take to network host. |
| troff |
Typeset or format documents. |
| ul |
Reads the named filenames or terminal and does underlining. |
| umask |
Get or set the file mode creation mask. |
| unalias |
Remove an alias. |
| unhash |
Remove internal hash table. |
| uname |
Print name of current system. |
| uncompress |
Uncompressed compressed files. |
| uniq |
Report or filter out repeated lines in a file. |
| unmount |
Crates a file systems and remote resources. |
| unpack |
Expands a compressed file. |
| untar |
Create tape archives and add or extract files. |
| until |
Execute a set of actions while/until conditions are evaluated TRUE. |
| useradd |
Create a new user or updates default new user information. |
| userdel |
Remove a users account. |
| usermod |
Modify a users account. |
| vacation |
Reply to mail automatically. |
| vedit |
Screen-oriented (visual) display editor based on ex. |
| vgrind |
Grind nice program listings |
| vi |
Screen-oriented (visual) display editor based on ex. |
| vim |
A programmers text editor. |
| view |
A programmers text editor. |
| w |
Show who is logged on and what they are doing. |
| wait |
Await process completion. |
| wc |
Displays a count of lines, words, and characters in a file |
| whereis |
Locate a binary, source, and manual page files for a command. |
| while |
Repetitively execute a set of actions while/until conditions are evaluated TRUE. |
| which |
Locate a command. |
| who |
Displays who is on the system. |
| whois |
Internet user name directory service. |
| write |
Send a message to another user. |
| X |
Execute the X windows system. |
| xfd |
Display all the characters in an X font. |
| xlsfonts |
Server font list displayer for X. |
| xset |
User preference utility for X. |
| xterm |
Terminal emulator for X. |
| xrdb |
X server resource database utility. |
| yacc |
Short for yet another compiler-compiler, yacc is a compiler. |
| yes |
Repeatedly output a line with all specified STRING(s), or ‘y’. |
| yppasswd |
Changes network password in the NIS database. |
| zcat |
Compress files. |
