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Linux [email protected]
Index of the Linux BASH command line
alias Create an aliasawk Find and Replace text, database sort/validate/indexbreak Exit from a loopbuiltin Run a shell builtin
cal Display a calendarcase Conditionally perform a commandcat Display the contents of a filecd Change Directorycfdisk Partition table manipulator for Linuxchgrp Change group ownershipchmod Change access permissionschown Change file owner and groupchroot Run a command with a different root directorycksum Print CRC checksum and byte countsclear Clear terminal screencmp Compare two filescomm Compare two sorted files line by linecommand Run a command - ignoring shell functionscontinue Resume the next iteration of a loopcp Copy one or more files to another locationcron Daemon to execute scheduled commandscrontab Schedule a command to run at a later timecsplit Split a file into context-determined piecescut Divide a file into several parts
date Display or change the date & timedc Desk Calculatordd Data Dump - Convert and copy a filedeclare Declare variables and give them attributesdf Display free disk spacediff Display the differences between two filesdiff3 Show differences among three filesdir Briefly list directory contentsdircolors Colour setup for `ls'dirname Convert a full pathname to just a pathdirs Display list of remembered directoriesdu Estimate file space usage
echo Display message on screened A line-oriented text editor (edlin)egrep Search file(s) for lines that match an extended expressioneject Eject CD-ROMenable Enable and disable builtin shell commandsenv Display, set, or remove environment variableseval Evaluate several commands/argumentsexec Execute a command
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exit Exit the shellexpand Convert tabs to spacesexport Set an environment variableexpr Evaluate expressions
factor Print prime factorsfalse Do nothing, unsuccessfullyfdformat Low-level format a floppy diskfdisk Partition table manipulator for Linuxfgrep Search file(s) for lines that match a fixed stringfind Search for files that meet a desired criteriafmt Reformat paragraph textfold Wrap text to fit a specified width.for Expand words, and execute commandsformat Format disks or tapesfree Display memory usagefsck Filesystem consistency check and repair.function Define Function Macros
gawk Find and Replace text within file(s)getopts Parse positional parametersgrep Search file(s) for lines that match a given patterngroups Print group names a user is ingzip Compress or decompress named file(s)
hash Remember the full pathname of a name argumenthead Output the first part of file(s)history Command Historyhostname Print or set system name
id Print user and group id'sif Conditionally perform a commandimport Capture an X server screen and save the image to fileinfo Help infoinstall Copy files and set attributes
join Join lines on a common field
kill Stop a process from running
less Display output one screen at a timelet Perform arithmetic on shell variablesln Make links between fileslocal Create variableslocate Find fileslogname Print current login namelogout Exit a login shelllpc Line printer control programlpr Off line print
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lprint Print a filelprintd Abort a print joblprintq List the print queuelprm Remove jobs from the print queuels List information about file(s)
m4 Macro processorman Help manualmkdir Create new folder(s)mkfifo Make FIFOs (named pipes)mknod Make block or character special filesmore Display output one screen at a timemount Mount a file systemmtools Manipulate MS-DOS filesmv Move or rename files or directories
nice Set the priority of a command or jobnl Number lines and write filesnohup Run a command immune to hangups
passwd Modify a user passwordpaste Merge lines of filespathchk Check file name portabilitypopd Restore the previous value of the current directorypr Convert text files for printingprintcap Printer capability databaseprintenv Print environment variablesprintf Format and print dataps Process statuspushd Save and then change the current directorypwd Print Working Directory
quota Display disk usage and limitsquotacheck Scan a file system for disk usagequotactl Set disk quotas
ram ram disk devicercp Copy files between two machines.read read a line from standard inputreadonly Mark variables/functions as readonlyremsync Synchronize remote files via emailreturn Exit a shell functionrm Remove filesrmdir Remove folder(s)rpm Remote Package Managerrsync Remote file copy (Synchronize file trees)
screen Terminal window managersdiff Merge two files interactively
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sed Stream Editorselect Accept keyboard inputseq Print numeric sequencesset Manipulate shell variables and functionsshift Shift positional parametersshopt Shell Optionsshutdown Shutdown or restart linuxsleep Delay for a specified timesort Sort text filessource Run commands from a file `.'split Split a file into fixed-size piecessu Substitute user identitysum Print a checksum for a filesymlink Make a new name for a filesync Synchronize data on disk with memory
tac Concatenate and write files in reversetail Output the last part of filestar Tape ARchivertee Redirect output to multiple filestest Evaluate a conditional expressiontime Measure Program Resource Usetimes User and system timestouch Change file timestampstop List processes running on the systemtraceroute Trace Route to Hosttrap Run a command when a signal is set(bourne)tr Translate, squeeze, and/or delete characterstrue Do nothing, successfullytsort Topological sorttty Print filename of terminal on stdintype Describe a command
ulimit Limit user resourcesumask Users file creation maskumount Unmount a deviceunalias Remove an aliasuname Print system informationunexpand Convert spaces to tabsuniq Uniquify filesunits Convert units from one scale to anotherunset Remove variable or function namesunshar Unpack shell archive scriptsuntil Execute commands (until error)useradd Create new user accountusermod Modify user accountusers List users currently logged inuuencode Encode a binary file uudecode Decode a file created by uuencode
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v Verbosely list directory contents (`ls -l -b')vdir Verbosely list directory contents (`ls -l -b')
watch Execute/display a program periodicallywc Print byte, word, and line countswhereis Report all known instances of a command which Locate a program file in the user's path. while Execute commandswho Print all usernames currently logged inwhoami Print the current user id and name (`id -un')
xargs Execute utility, passing constructed argument list(s)yes Print a string until interrupted
.period Run commands from a file### Comment / Remark
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