Linux Commands

Introduction

This is the most complete guide on Linux Command Line.

Bash Builtins

GNU Coreutils

[

[ command

Syntax:

Example:

$ [

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• [ command in Linux

arch

arch command print machine hardware name (same as uname

Syntax:

       arch [OPTION]...

Example:

$ arch

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• arch command in Linux

b2sum

b2sum command compute and check BLAKE2 message digest

Syntax:

       b2sum [OPTION]... [FILE]...

Example:

$ b2sum

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• b2sum command in Linux

base32

base32 command base32 encode/decode data and print to standard output

Syntax:

       base32 [OPTION]... [FILE]

Example:

$ base32

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• base32 command in Linux

base64

base64 command base64 encode/decode data and print to standard output

Syntax:

       base64 [OPTION]... [FILE]

Example:

$ base64

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• base64 command in Linux

basename

basename command strip directory and suffix from filenames s .h include/stdio.h a any/str1 any/str2

Syntax:

       basename NAME [SUFFIX]
       basename OPTION... NAME...

Example:

$ basename

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• basename command in Linux

cat

cat command concatenate files and print on the standard output

Syntax:

       cat [OPTION]... [FILE]...

Example:

$ cat

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• cat command in Linux

chcon

chcon command change file security context

Syntax:

       chcon [OPTION]... CONTEXT FILE...
       chcon [OPTION]... [-u USER] [-r ROLE] [-l RANGE] [-t TYPE] FILE...
       chcon [OPTION]... --reference=RFILE FILE...

Example:

$ chcon

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• chcon command in Linux

chgrp

chgrp command change group ownership

Syntax:

       chgrp [OPTION]... GROUP FILE...
       chgrp [OPTION]... --reference=RFILE FILE...

Example:

$ chgrp

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• chgrp command in Linux

chmod

chmod command change file mode bits

Syntax:

       chmod [OPTION]... MODE[,MODE]... FILE...
       chmod [OPTION]... OCTAL-MODE FILE...
       chmod [OPTION]... --reference=RFILE FILE...

Example:

$ chmod

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• chmod command in Linux

chown

chown command change file owner and group

Syntax:

       chown [OPTION]... [OWNER][:[GROUP]] FILE...
       chown [OPTION]... --reference=RFILE FILE...

Example:

$ chown

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• chown command in Linux

chroot

chroot command run command or interactive shell with special root directory

Syntax:

       chroot [OPTION] NEWROOT [COMMAND [ARG]...]
       chroot OPTION

Example:

$ chroot

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• chroot command in Linux

cksum

cksum command checksum and count the bytes in a file

Syntax:

       cksum [FILE]...
       cksum [OPTION]

Example:

$ cksum

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• cksum command in Linux

comm

comm command compare two sorted files line by line

Syntax:

       comm [OPTION]... FILE1 FILE2

Example:

$ comm

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• comm command in Linux

cp

cp command copy files and directories

Syntax:

       cp [OPTION]... [-T] SOURCE DEST
       cp [OPTION]... SOURCE... DIRECTORY
       cp [OPTION]... -t DIRECTORY SOURCE...

Example:

$ cp

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• cp command in Linux

csplit

csplit command split a file into sections determined by context lines

Syntax:

       csplit [OPTION]... FILE PATTERN...

Example:

$ csplit

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• csplit command in Linux

cut

cut command remove sections from each line of files

Syntax:

       cut OPTION... [FILE]...

Example:

$ cut

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• cut command in Linux

date

date command print or set the system date and time

Syntax:

       date [OPTION]... [+FORMAT]
       date [-u|--utc|--universal] [MMDDhhmm[[CC]YY][.ss]]

Example:

$ date

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• date command in Linux

dd

dd command convert and copy a file

Syntax:

       dd [OPERAND]...
       dd OPTION

Example:

$ dd

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• dd command in Linux

df

df command report file system disk space usage

Syntax:

       df [OPTION]... [FILE]...

Example:

$ df

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• df command in Linux

dir

dir command list directory contents

Syntax:

       dir [OPTION]... [FILE]...

Example:

$ dir

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• dir command in Linux

dircolors

dircolors command color setup for ls

Syntax:

       dircolors [OPTION]... [FILE]

Example:

$ dircolors

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• dircolors command in Linux

dirname

dirname command strip last component from file name

Syntax:

       dirname [OPTION] NAME...

Example:

$ dirname

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• dirname command in Linux

du

du command estimate file space usage

Syntax:

       du [OPTION]... [FILE]...
       du [OPTION]... --files0-from=F

Example:

$ du

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• du command in Linux

echo

echo command display a line of text

Syntax:

       echo [SHORT-OPTION]... [STRING]...
       echo LONG-OPTION

Example:

$ echo

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• echo command in Linux

env

env command run a program in a modified environment ] [NAME=VALUE]… [COMMAND [ARG]…] i, implies S perl w

Syntax:

       env [OPTION]... [-] [NAME=VALUE]... [COMMAND [ARG]...]

Example:

$ env

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• env command in Linux

expand

expand command convert tabs to spaces

Syntax:

       expand [OPTION]... [FILE]...

Example:

$ expand

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• expand command in Linux

expr

expr command evaluate expressions

Syntax:

       expr EXPRESSION
       expr OPTION

Example:

$ expr

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• expr command in Linux

factor

factor command factor numbers

Syntax:

       factor [NUMBER]...
       factor OPTION

Example:

$ factor

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• factor command in Linux

false

false command do nothing, unsuccessfully

Syntax:

       false [ignored command line arguments]
       false OPTION

Example:

$ false

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• false command in Linux

fmt

fmt command simple optimal text formatter

Syntax:

       fmt [-WIDTH] [OPTION]... [FILE]...

Example:

$ fmt

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• fmt command in Linux

fold

fold command wrap each input line to fit in specified width

Syntax:

       fold [OPTION]... [FILE]...

Example:

$ fold

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• fold command in Linux

groups

groups command print the groups a user is in

Syntax:

       groups [OPTION]... [USERNAME]...

Example:

$ groups

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• groups command in Linux

head

head command output the first part of files

Syntax:

       head [OPTION]... [FILE]...

Example:

$ head

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• head command in Linux

hostid

hostid command print the numeric identifier for the current host

Syntax:

       hostid [OPTION]

Example:

$ hostid

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• hostid command in Linux

id

id command print real and effective user and group IDs

Syntax:

       id [OPTION]... [USER]

Example:

$ id

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• id command in Linux

install

install command copy files and set attributes

Syntax:

       install [OPTION]... [-T] SOURCE DEST
       install [OPTION]... SOURCE... DIRECTORY
       install [OPTION]... -t DIRECTORY SOURCE...
       install [OPTION]... -d DIRECTORY...

Example:

$ install

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• install command in Linux

join

join command join lines of two files on a common field

Syntax:

       join [OPTION]... FILE1 FILE2

Example:

$ join

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• join command in Linux

link

link command call the link function to create a link to a file

Syntax:

       link FILE1 FILE2
       link OPTION

Example:

$ link

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• link command in Linux

ln

ln command make links between files T] TARGET LINK_NAME t DIRECTORY TARGET…

Syntax:

       ln [OPTION]... [-T] TARGET LINK_NAME
       ln [OPTION]... TARGET
       ln [OPTION]... TARGET... DIRECTORY
       ln [OPTION]... -t DIRECTORY TARGET...

Example:

$ ln

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• ln command in Linux

logname

logname command print user´s login name

Syntax:

       logname [OPTION]

Example:

$ logname

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• logname command in Linux

ls

ls command list directory contents

Syntax:

       ls [OPTION]... [FILE]...

Example:

$ ls

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• ls command in Linux

md5sum

md5sum command compute and check MD5 message digest

Syntax:

       md5sum [OPTION]... [FILE]...

Example:

$ md5sum

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• md5sum command in Linux

md5sum.textutils

md5sum.textutils command

Syntax:

Example:

$ md5sum.textutils

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• md5sum.textutils command in Linux

mkdir

mkdir command make directories

Syntax:

       mkdir [OPTION]... DIRECTORY...

Example:

$ mkdir

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• mkdir command in Linux

mkfifo

mkfifo command make FIFOs (named pipes)

Syntax:

       mkfifo [OPTION]... NAME...

Example:

$ mkfifo

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• mkfifo command in Linux

mknod

mknod command make block or character special files

Syntax:

       mknod [OPTION]... NAME TYPE [MAJOR MINOR]

Example:

$ mknod

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• mknod command in Linux

mktemp

mktemp command create a temporary file or directory

Syntax:

       mktemp [OPTION]... [TEMPLATE]

Example:

$ mktemp

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• mktemp command in Linux

mv

mv command move (rename) files

Syntax:

       mv [OPTION]... [-T] SOURCE DEST
       mv [OPTION]... SOURCE... DIRECTORY
       mv [OPTION]... -t DIRECTORY SOURCE...

Example:

$ mv

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• mv command in Linux

nice

nice command run a program with modified scheduling priority

Syntax:

       nice [OPTION] [COMMAND [ARG]...]

Example:

$ nice

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• nice command in Linux

nl

nl command number lines of files

Syntax:

       nl [OPTION]... [FILE]...

Example:

$ nl

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• nl command in Linux

nohup

nohup command run a command immune to hangups, with output to a non

Syntax:

       nohup COMMAND [ARG]...
       nohup OPTION

Example:

$ nohup

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• nohup command in Linux

nproc

nproc command print the number of processing units available

Syntax:

       nproc [OPTION]...

Example:

$ nproc

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• nproc command in Linux

numfmt

numfmt command Convert numbers from/to human

Syntax:

       numfmt [OPTION]... [NUMBER]...

Example:

$ numfmt

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• numfmt command in Linux

od

od command dump files in octal and other formats

Syntax:

       od [OPTION]... [FILE]...
       od [-abcdfilosx]... [FILE] [[+]OFFSET[.][b]]
       od --traditional [OPTION]... [FILE] [[+]OFFSET[.][b] [+][LABEL][.][b]]

Example:

$ od

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• od command in Linux

paste

paste command merge lines of files

Syntax:

       paste [OPTION]... [FILE]...

Example:

$ paste

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• paste command in Linux

pathchk

pathchk command check whether file names are valid or portable

Syntax:

       pathchk [OPTION]... NAME...

Example:

$ pathchk

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• pathchk command in Linux

pinky

pinky command lightweight finger

Syntax:

       pinky [OPTION]... [USER]...

Example:

$ pinky

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• pinky command in Linux

pr

pr command convert text files for printing

Syntax:

       pr [OPTION]... [FILE]...

Example:

$ pr

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• pr command in Linux

printenv

printenv command print all or part of environment

Syntax:

       printenv [OPTION]... [VARIABLE]...

Example:

$ printenv

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• printenv command in Linux

printf

printf command format and print data

Syntax:

       printf FORMAT [ARGUMENT]...
       printf OPTION

Example:

$ printf

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• printf command in Linux

ptx

ptx command produce a permuted index of file contents

Syntax:

       ptx [OPTION]... [INPUT]...   (without -G)
       ptx -G [OPTION]... [INPUT [OUTPUT]]

Example:

$ ptx

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• ptx command in Linux

pwd

pwd command print name of current/working directory

Syntax:

       pwd [OPTION]...

Example:

$ pwd

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• pwd command in Linux

readlink

readlink command print resolved symbolic links or canonical file names

Syntax:

       readlink [OPTION]... FILE...

Example:

$ readlink

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• readlink command in Linux

realpath

realpath command print the resolved path

Syntax:

       realpath [OPTION]... FILE...

Example:

$ realpath

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• realpath command in Linux

rm

rm command remove files or directories

Syntax:

       rm [OPTION]... [FILE]...

Example:

$ rm

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• rm command in Linux

rmdir

rmdir command remove empty directories

Syntax:

       rmdir [OPTION]... DIRECTORY...

Example:

$ rmdir

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• rmdir command in Linux

runcon

runcon command run command with specified security context

Syntax:

       runcon CONTEXT COMMAND [args]
       runcon [ -c ] [-u USER] [-r ROLE] [-t TYPE] [-l RANGE] COMMAND [args]

Example:

$ runcon

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• runcon command in Linux

seq

seq command print a sequence of numbers

Syntax:

       seq [OPTION]... LAST
       seq [OPTION]... FIRST LAST
       seq [OPTION]... FIRST INCREMENT LAST

Example:

$ seq

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• seq command in Linux

sha1sum

sha1sum command compute and check SHA1 message digest

Syntax:

       sha1sum [OPTION]... [FILE]...

Example:

$ sha1sum

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• sha1sum command in Linux

sha224sum

sha224sum command compute and check SHA224 message digest

Syntax:

       sha224sum [OPTION]... [FILE]...

Example:

$ sha224sum

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• sha224sum command in Linux

sha256sum

sha256sum command compute and check SHA256 message digest

Syntax:

       sha256sum [OPTION]... [FILE]...

Example:

$ sha256sum

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• sha256sum command in Linux

sha384sum

sha384sum command compute and check SHA384 message digest

Syntax:

       sha384sum [OPTION]... [FILE]...

Example:

$ sha384sum

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• sha384sum command in Linux

sha512sum

sha512sum command compute and check SHA512 message digest

Syntax:

       sha512sum [OPTION]... [FILE]...

Example:

$ sha512sum

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• sha512sum command in Linux

shred

shred command overwrite a file to hide its contents, and optionally delete it

Syntax:

       shred [OPTION]... FILE...

Example:

$ shred

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• shred command in Linux

shuf

shuf command generate random permutations

Syntax:

       shuf [OPTION]... [FILE]
       shuf -e [OPTION]... [ARG]...
       shuf -i LO-HI [OPTION]...

Example:

$ shuf

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• shuf command in Linux

sleep

sleep command delay for a specified amount of time

Syntax:

       sleep NUMBER[SUFFIX]...
       sleep OPTION

Example:

$ sleep

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• sleep command in Linux

sort

sort command sort lines of text files

Syntax:

       sort [OPTION]... [FILE]...
       sort [OPTION]... --files0-from=F

Example:

$ sort

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• sort command in Linux

split

split command split a file into pieces

Syntax:

       split [OPTION]... [FILE [PREFIX]]

Example:

$ split

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• split command in Linux

stat

stat command display file or file system status

Syntax:

       stat [OPTION]... FILE...

Example:

$ stat

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• stat command in Linux

stdbuf

stdbuf command Run COMMAND, with modified buffering operations for its standard streams.

Syntax:

       stdbuf OPTION... COMMAND

Example:

$ stdbuf

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• stdbuf command in Linux

stty

stty command change and print terminal line settings

Syntax:

       stty [-F DEVICE | --file=DEVICE] [SETTING]...
       stty [-F DEVICE | --file=DEVICE] [-a|--all]
       stty [-F DEVICE | --file=DEVICE] [-g|--save]

Example:

$ stty

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• stty command in Linux

sum

sum command checksum and count the blocks in a file

Syntax:

       sum [OPTION]... [FILE]...

Example:

$ sum

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• sum command in Linux

sync

sync command Synchronize cached writes to persistent storage

Syntax:

       sync [OPTION] [FILE]...

Example:

$ sync

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• sync command in Linux

tac

tac command concatenate and print files in reverse

Syntax:

       tac [OPTION]... [FILE]...

Example:

$ tac

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• tac command in Linux

tail

tail command output the last part of files

Syntax:

       tail [OPTION]... [FILE]...

Example:

$ tail

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• tail command in Linux

tee

tee command read from standard input and write to standard output and files

Syntax:

       tee [OPTION]... [FILE]...

Example:

$ tee

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• tee command in Linux

test

test command check file types and compare values

Syntax:

       test EXPRESSION
       test

Example:

$ test

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• test command in Linux

timeout

timeout command run a command with a time limit

Syntax:

       timeout [OPTION] DURATION COMMAND [ARG]...
       timeout [OPTION]

Example:

$ timeout

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• timeout command in Linux

touch

touch command change file timestamps

Syntax:

       touch [OPTION]... FILE...

Example:

$ touch

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• touch command in Linux

tr

tr command translate or delete characters

Syntax:

       tr [OPTION]... SET1 [SET2]

Example:

$ tr

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• tr command in Linux

true

true command do nothing, successfully

Syntax:

       true [ignored command line arguments]
       true OPTION

Example:

$ true

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• true command in Linux

truncate

truncate command shrink or extend the size of a file to the specified size

Syntax:

       truncate OPTION... FILE...

Example:

$ truncate

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• truncate command in Linux

tsort

tsort command perform topological sort

Syntax:

       tsort [OPTION] [FILE]

Example:

$ tsort

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• tsort command in Linux

tty

tty command print the file name of the terminal connected to standard input

Syntax:

       tty [OPTION]...

Example:

$ tty

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• tty command in Linux

uname

uname command print system information

Syntax:

       uname [OPTION]...

Example:

$ uname

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• uname command in Linux

unexpand

unexpand command convert spaces to tabs

Syntax:

       unexpand [OPTION]... [FILE]...

Example:

$ unexpand

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• unexpand command in Linux

uniq

uniq command report or omit repeated lines

Syntax:

       uniq [OPTION]... [INPUT [OUTPUT]]

Example:

$ uniq

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• uniq command in Linux

unlink

unlink command call the unlink function to remove the specified file

Syntax:

       unlink FILE
       unlink OPTION

Example:

$ unlink

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• unlink command in Linux

users

users command print the user names of users currently logged in to the current host

Syntax:

       users [OPTION]... [FILE]

Example:

$ users

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• users command in Linux

vdir

vdir command list directory contents

Syntax:

       vdir [OPTION]... [FILE]...

Example:

$ vdir

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• vdir command in Linux

wc

wc command print newline, word, and byte counts for each file

Syntax:

       wc [OPTION]... [FILE]...
       wc [OPTION]... --files0-from=F

Example:

$ wc

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• wc command in Linux

who

who command show who is logged on

Syntax:

       who [OPTION]... [ FILE | ARG1 ARG2 ]

Example:

$ who

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• who command in Linux

whoami

whoami command print effective userid

Syntax:

       whoami [OPTION]...

Example:

$ whoami

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• whoami command in Linux

yes

yes command output a string repeatedly until killed

Syntax:

       yes [STRING]...
       yes OPTION

Example:

$ yes

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• yes command in Linux

Util-linux

Util-linux is a diverse collection of Linux kernel utilities. It provides dmesg and includes tools for working with file systems, block devices, UUIDs, TTYs, and many other tools.

addpart

addpart command tell the kernel about the existence of a partition

Syntax:

addpart device partition start length

Example:

$ addpart

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• addpart command in Linux

agetty

agetty command is alternative Linux getty.

Syntax:

agetty [options] port [baud_rate...] [term]

Example:

$ agetty

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• agetty command in Linux

blkdiscard

blkdiscard command discard sectors on a device

Syntax:

blkdiscard [options] [-o offset] [-l length] device

Example:

$ blkdiscard

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• blkdiscard command in Linux

blkid

blkid command locate/print block device attributes.

Syntax:

blkid  --label label | --uuid uuid
blkid  [--no-encoding --garbage-collect --list-one --cache-file file] [--output format] [--match-tag tag] [--match-token NAME=value] [device ...]
blkid  --probe  [--offset offset] [--output format] [--size size] [--match-tag tag] [--match-types list] [--usages list] [--no-part-details] device
blkid  --info [--output format] [--match-tag tag] device ...

Example:

$ blkid

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• blkid command in Linux

blkzone

blkzone command run zone command on a device

Syntax:

blkzone command [options] device

Example:

$ blkzone

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• blkzone command in Linux

blockdev

blockdev command call block device ioctls from the command line

Syntax:

blockdev [-q] [-v] command [command...] device [device...]
blockdev --report [device...]
blockdev -h|-V

Example:

$ blockdev

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• blockdev command in Linux

chcpu

chcpu command configure CPUs

Syntax:

chcpu -c|-d|-e|-g cpu-list
chcpu -p mode
chcpu -r|-h|-V

Example:

$ chcpu

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• chcpu command in Linux

chmem

chmem command configure memory

Syntax:

chmem [-h] [-V] [-v] [-e|-d] [SIZE|RANGE|-b BLOCKRANGE] [-z ZONE]

Example:

$ chmem

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• chmem command in Linux

choom

choom command display and adjust OOM

Syntax:

choom -p pid
choom -p pid -n number
choom -n number command [argument...]

Example:

$ choom

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• choom command in Linux

chrt

chrt command manipulate the real

Syntax:

chrt [options] priority command [argument...]
chrt [options] -p [priority] pid

Example:

$ chrt

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• chrt command in Linux

ctrlaltdel

ctrlaltdel command set the function of the Ctrl

Syntax:

ctrlaltdel hard|soft

Example:

$ ctrlaltdel

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• ctrlaltdel command in Linux

delpart

delpart command tell the kernel to forget about a partition

Syntax:

delpart device partition

Example:

$ delpart

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• delpart command in Linux

dmesg

dmesg command print or control the kernel ring buffer

Syntax:

dmesg [options]
dmesg --clear
dmesg --read-clear [options]
dmesg --console-level level
dmesg --console-on
dmesg --console-off

Example:

$ dmesg

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• dmesg command in Linux

fallocate

fallocate command preallocate or deallocate space to a file

Syntax:

fallocate [-c|-p|-z] [-o offset] -l length [-n] filename
fallocate -d [-o offset] [-l length] filename
fallocate -x [-o offset] -l length filename

Example:

$ fallocate

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• fallocate command in Linux

fdformat

fdformat command low

Syntax:

fdformat [options] device

Example:

$ fdformat

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• fdformat command in Linux

fincore

fincore command count pages of file contents in core

Syntax:

fincore [options] file ...

Example:

$ fincore

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• fincore command in Linux

findfs

findfs command find a filesystem by label or UUID.

Syntax:

findfs NAME=value

Example:

$ findfs

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• findfs command in Linux

findmnt

findmnt command find a filesystem

Syntax:

findmnt [options]
findmnt [options] device|mountpoint
findmnt [options] [--source] device [--target|--mountpoint] mountpoint

Example:

$ findmnt

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• findmnt command in Linux

flock

flock command manage locks from shell scripts

Syntax:

flock [options] file|directory command [arguments]
flock [options] file|directory -c command
flock [options] number

Example:

$ flock

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• flock command in Linux

fsck

fsck command check and repair a Linux filesystem

Syntax:

fsck [-lsAVRTMNP] [-r [fd]] [-C [fd]] [-t fstype] [filesystem...] [--] [fs-specific-options]

Example:

$ fsck

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• fsck command in Linux

fsck.cramfs

fsck.cramfs command fsck compressed ROM file system

Syntax:

fsck.cramfs [options] file

Example:

$ fsck.cramfs

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• fsck.cramfs command in Linux

fsck.minix

fsck.minix command check consistency of Minix filesystem

Syntax:

fsck.minix [options] device

Example:

$ fsck.minix

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• fsck.minix command in Linux

fsfreeze

fsfreeze command suspend access to a filesystem (Ext3/4, ReiserFS, JFS, XFS)

Syntax:

fsfreeze --freeze|--unfreeze mountpoint

Example:

$ fsfreeze

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• fsfreeze command in Linux

fstrim

fstrim command discard unused blocks on a mounted filesystem

Syntax:

fstrim [-Aa] [-o offset] [-l length] [-m minimum-size] [-v] mountpoint

Example:

$ fstrim

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• fstrim command in Linux

getopt

getopt command parse command options (enhanced)

Syntax:

getopt optstring parameters
getopt [options] [--] optstring parameters
getopt [options] -o|--options optstring [options] [--] parameters

Example:

$ getopt

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• getopt command in Linux

getty

getty command alias of agetty command.

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• agetty command in Linux

hwclock

hwclock command time clocks utility

Syntax:

hwclock [function] [option...]

Example:

$ hwclock

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• hwclock command in Linux

i386

i386 command is and alias of setarch command

Read more:

• setarch command in Linux

ionice

ionice command set or get process I/O scheduling class and priority

Syntax:

ionice [-c class] [-n level] [-t] -p PID...
ionice [-c class] [-n level] [-t] -P PGID...
ionice [-c class] [-n level] [-t] -u UID...
ionice [-c class] [-n level] [-t] command [argument...]

Example:

$ ionice

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• ionice command in Linux

ipcmk

ipcmk command make various IPC resources

Syntax:

ipcmk [options]

Example:

$ ipcmk

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• ipcmk command in Linux

ipcrm

ipcrm command remove certain IPC resources

Syntax:

ipcrm [options]
ipcrm {shm|msg|sem} id...

Example:

$ ipcrm

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• ipcrm command in Linux

ipcs

ipcs command show information on IPC facilities

Syntax:

ipcs [options]

Example:

$ ipcs

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• ipcs command in Linux

isosize

isosize command output the length of an iso9660 filesystem

Syntax:

isosize [options] iso9660_image_file

Example:

$ isosize

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• isosize command in Linux

last

last command show a listing of last logged in users

Syntax:

last [options] [username...] [tty...]
lastb [options] [username...] [tty...]

Example:

$ last

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• last command in Linux

lastb

lastb command is an alias of last command.

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• last command in Linux

ldattach

ldattach command attach a line discipline to a serial line

Syntax:

ldattach [-1278denoVh] [-i iflag] [-s speed] ldisc device

Example:

$ ldattach

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• ldattach command in Linux

linux32

linux32 command is an alias of setarch command

Read more:

• setarch command in Linux

linux64

linux64 command is an alias of setarch.

Read more:

• setarch command in Linux

lsblk

lsblk command list block devices.

Syntax:

lsblk [options] [device...]

Example:

$ lsblk

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• lsblk command in Linux

lscpu

lscpu command display information about the CPU architecture.

Syntax:

lscpu [options]

Example:

$ lscpu

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• lscpu command in Linux

lsipc

lsipc command show information on IPC facilities currently employed in the system.

Syntax:

lsipc [options]

Example:

$ lsipc

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• lsipc command in Linux

lslocks

lslocks command list local system locks

Syntax:

lslocks [options]

Example:

$ lslocks

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• lslocks command in Linux

lslogins

lslogins command display information about known users in the system.

Syntax:

lslogins [options] [-s|-u[=UID]] [-g groups] [-l logins] [username]

Example:

$ lslogins

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• lslogins command in Linux

lsmem

lsmem command list the ranges of available memory with their online status

Syntax:

lsmem [options]

Example:

$ lsmem

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• lsmem command in Linux

lsns

lsns command list namespaces

Syntax:

lsns [options] [namespace]

Example:

$ lsns

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• lsns command in Linux

mcookie

mcookie command generate magic cookies for xauth

Syntax:

mcookie [options]

Example:

$ mcookie

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• mcookie command in Linux

mesg

mesg command display (or do not display) messages from other users

Syntax:

mesg [option] [n|y]

Example:

$ mesg

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• mesg command in Linux

mkfs

mkfs command build a Linux filesystem

Syntax:

mkfs [options] [-t type] [fs-options] device [size]

Example:

$ mkfs

Read more:

• mkfs command in Linux

mkfs.bfs

mkfs.bfs command make an SCO bfs filesystem

Syntax:

mkfs.bfs [options] device [block-count]

Example:

$ mkfs.bfs

Read more:

• mkfs.bfs command in Linux

mkfs.cramfs

mkfs.cramfs command make compressed ROM file system

Syntax:

mkfs.cramfs [options] directory file

Example:

$ mkfs.cramfs

Read more:

• mkfs.cramfs command in Linux

mkfs.minix

mkfs.minix command make a Minix filesystem

Syntax:

mkfs.minix [options] device [size-in-blocks]

Example:

$ mkfs.minix

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• mkfs.minix command in Linux

mkswap

mkswap command set up a Linux swap area

Syntax:

mkswap [options] device [size]

Example:

$ mkswap

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• mkswap command in Linux

more

more command file perusal filter for crt viewing

Syntax:

more [options] file...

Example:

$ more

Read more:

• more command in Linux

mountpoint

mountpoint command see if a directory or file is a mountpoint

Syntax:

mountpoint [-d|-q] directory | file
mountpoint -x device

Example:

$ mountpoint

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• mountpoint command in Linux

namei

namei command follow a pathname until a terminal point is found

Syntax:

namei [options] pathname...

Example:

$ namei

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• namei command in Linux

nsenter

nsenter command run program with namespaces of other processes

Syntax:

nsenter [options] [program [arguments]]

Example:

$ nsenter

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• nsenter command in Linux

partx

partx command tell the kernel about the presence and numbering of on

Syntax:

partx [-a|-d|-P|-r|-s|-u] [-t type] [-n M:N] [-] disk
partx [-a|-d|-P|-r|-s|-u] [-t type] partition [disk]

Example:

$ partx

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• partx command in Linux

pivot_root

pivot_root command change the root filesystem

Syntax:

pivot_root new_root put_old

Example:

$ pivot_root

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• pivot_root command in Linux

prlimit

prlimit command get and set process resource limits

Syntax:

prlimit [options] [--resource[=limits] [--pid PID]
prlimit [options] [--resource[=limits] command [argument...]

Example:

$ prlimit

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• prlimit command in Linux

raw

raw command bind a Linux raw character device

Syntax:

raw /dev/raw/raw<n> <major> <minor>
raw /dev/raw/raw<n> /dev/<blockdev>
raw -q /dev/raw/raw<n>
raw -qa
</n></blockdev></n></minor></major></n>

Example:

$ raw

Read more:

• raw command in Linux

readprofile

readprofile command read kernel profiling information

Syntax:

readprofile [options]

Example:

$ readprofile

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• readprofile command in Linux

rename.ul

rename.ul command

Syntax:

Example:

$ rename.ul

Read more:

• rename.ul command in Linux

resizepart

resizepart command tell the kernel about the new size of a partition

Syntax:

resizepart device partition length

Example:

$ resizepart

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• resizepart command in Linux

rev

rev command reverse lines characterwise

Syntax:

rev [option] [file...]

Example:

$ rev

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• rev command in Linux

rtcwake

rtcwake command enter a system sleep state until specified wakeup time

Syntax:

rtcwake [options] [-d device] [-m standby_mode] {-s seconds|-t time_t}

Example:

$ rtcwake

Read more:

• rtcwake command in Linux

runuser

runuser command run a command with substitute user and group ID.

Syntax:

runuser [options] -u user [[--] command [argument...]]
runuser [options] [-] [user [argument...]]

Example:

$ runuser

Read more:

• runuser command in Linux

setarch

setarch command change reported architecture in new program environment and/or set personality flags.

Syntax:

setarch [arch] [options] [program [argument...]]
setarch --list|-h|-V

Example:

$ setarch

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• setarch command in Linux

setpriv

setpriv command run a program with different Linux privilege settings.

Syntax:

setpriv [options] program [arguments]

Example:

$ setpriv

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• setpriv command in Linux

setsid

setsid command run a program in a new session

Syntax:

setsid [options] program [arguments]

Example:

$ setsid

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• setsid command in Linux

setterm

setterm command set terminal attributes

Syntax:

setterm [options]

Example:

$ setterm

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• setterm command in Linux

su

su command run a command with substitute user and group ID.

Syntax:

su [options] [-] [user [argument...]]

Example:

$ su

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• su command in Linux

sulogin

sulogin command single

Syntax:

sulogin [options] [tty]

Example:

$ sulogin

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• sulogin command in Linux

swaplabel

swaplabel command print or change the label or UUID of a swap area

Syntax:

swaplabel [-L label] [-U UUID] device

Example:

$ swaplabel

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• swaplabel command in Linux

switch_root

switch_root command switch to another filesystem as the root of the mount tree

Syntax:

switch_root [-hV]
switch_root newroot init [arg...]

Example:

$ switch_root

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• switch_root command in Linux

taskset

taskset command set or retrieve a process’s CPU affinity

Syntax:

taskset [options] mask command [argument...]
taskset [options] -p [mask] pid

Example:

$ taskset

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• taskset command in Linux

unshare

unshare command run program with some namespaces unshared from parent

Syntax:

unshare [options] [program [arguments]]

Example:

$ unshare

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• unshare command in Linux

utmpdump

utmpdump command dump UTMP and WTMP files in raw format

Syntax:

utmpdump [options] [filename]

Example:

$ utmpdump

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• utmpdump command in Linux

wdctl

wdctl command show hardware watchdog status

Syntax:

wdctl [options] [device...]

Example:

$ wdctl

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• wdctl command in Linux

whereis

whereis command locate the binary, source, and manual page files for a command

Syntax:

whereis [options] [-BMS directory... -f] name...

Example:

$ whereis

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• whereis command in Linux

wipefs

wipefs command wipe a signature from a device

Syntax:

wipefs [options] device...
wipefs [--backup] -o offset device...
wipefs [--backup] -a device...

Example:

$ wipefs

Read more:

• wipefs command in Linux

x86_64

x86_64 command is an alias of setarch command.

Read more:

• setarch command in Linux

zramctl

zramctl command set up and control zram devices

Syntax:

zramctl [options]
zramctl -r zramdev...
zramctl -f
zramctl [-f | zramdev] [-s size] [-t number] [-a algorithm]

Example:

$ zramctl

Read more:

• zramctl command in Linux

References

• GNU Coreutils Website
• util-linux Github Project
• GNU Binutils Website
• Elfutils Project Website