| ,name,description | |
| 0,&,Start a new process in the background | |
| 1,alias,Create an alias • | |
| 2,apropos,Search Help manual pages (man -k) | |
| 3,apt,Search for and install software packages (Debian/Ubuntu) | |
| 4,apt-get,Search for and install software packages (Debian/Ubuntu) | |
| 5,aptitude,Search for and install software packages (Debian/Ubuntu) | |
| 6,aspell,Spell Checker | |
| 7,at,Schedule a command to run once at a particular time | |
| 8,awk,"Find and Replace text, database sort/validate/index" | |
| 9,basename,Strip directory and suffix from filenames | |
| 10,base32,Base32 encode/decode data and print to standard output | |
| 11,base64,Base64 encode/decode data and print to standard output | |
| 12,bash,GNU Bourne-Again SHell | |
| 13,bc,Arbitrary precision calculator language | |
| 14,bg,Send to background | |
| 15,bind,Set or display readline key and function bindings • | |
| 16,break,Exit from a loop • | |
| 17,builtin,Run a shell builtin | |
| 18,bzip2,Compress or decompress named file(s) | |
| 19,cal,Display a calendar | |
| 20,caller,Return the context of any active subroutine call • | |
| 21,case,Conditionally perform a command | |
| 22,cat,Concatenate and print (display) the content of files | |
| 23,cd,Change Directory | |
| 24,cfdisk,Partition table manipulator for Linux | |
| 25,chattr,Change file attributes on a Linux file system | |
| 26,chgrp,Change group ownership | |
| 27,chmod,Change access permissions | |
| 28,chown,Change file owner and group | |
| 29,chpasswd,Update passwords in batch mode | |
| 30,chroot,Run a command with a different root directory | |
| 31,chkconfig,System services (runlevel) | |
| 32,cksum,Print CRC checksum and byte counts | |
| 33,cmp,Compare two files | |
| 34,comm,Compare two sorted files line by line | |
| 35,command,Run a command - ignoring shell functions • | |
| 36,continue,Resume the next iteration of a loop • | |
| 37,cp,Copy one or more files to another location | |
| 38,cpio,Copy files to and from archives | |
| 39,cron,Daemon to execute scheduled commands | |
| 40,crontab,Schedule a command to run at a later time | |
| 41,csplit,Split a file into context-determined pieces | |
| 42,curl,Transfer data from or to a server | |
| 43,cut,Divide a file into several parts | |
| 44,date,Display or change the date & time | |
| 45,dc,Desk Calculator | |
| 46,dd,"Data Duplicator - convert and copy a file, write disk headers, boot records" | |
| 47,ddrescue,Data recovery tool | |
| 48,declare,Declare variables and give them attributes • | |
| 49,df,Display free disk space | |
| 50,diff,Display the differences between two files | |
| 51,diff3,Show differences among three files | |
| 52,dig,DNS lookup | |
| 53,dir,Briefly list directory contents | |
| 54,dircolors,Colour setup for 'ls' | |
| 55,dirname,Convert a full pathname to just a path | |
| 56,dirs,Display list of remembered directories | |
| 57,dos2unix,Windows/MAC to UNIX text file format converter | |
| 58,dmesg,Print kernel & driver messages | |
| 59,dpkg,Package manager (Debian/Ubuntu). | |
| 60,du,Estimate file space usage | |
| 61,echo,Display message on screen • | |
| 62,egrep,Search file(s) for lines that match an extended expression | |
| 63,eject,Eject removable media | |
| 64,enable,Enable and disable builtin shell commands • | |
| 65,env,Environment variables | |
| 66,eval,Evaluate several commands/arguments | |
| 67,exec,Execute a command | |
| 68,exit,Exit the shell | |
| 69,expand,Convert tabs to spaces | |
| 70,export,Set an environment variable | |
| 71,expr,Evaluate expressions | |
| 72,false,"Do nothing, unsuccessfully" | |
| 73,fdformat,Low-level format a floppy disk | |
| 74,fdisk,Partition table manipulator for Linux | |
| 75,fg,Send job to foreground | |
| 76,fgrep,Search file(s) for lines that match a fixed string | |
| 77,file,Determine file type | |
| 78,find,Search for files that meet a desired criteria | |
| 79,fmt,Reformat paragraph text | |
| 80,fold,Wrap text to fit a specified width | |
| 81,for,"Expand words, and execute commands" | |
| 82,fsck,File system consistency check and repair | |
| 83,ftp,File Transfer Protocol | |
| 84,function,Define Function Macros | |
| 85,fuser,Identify/kill the process that is accessing a file | |
| 86,gawk,Find and Replace text within file(s) | |
| 87,getopts,Parse positional parameters | |
| 88,getfacl,Get file access control lists | |
| 89,grep,Search file(s) for lines that match a given pattern | |
| 90,groupadd,Add a user security group | |
| 91,groupdel,Delete a group | |
| 92,groupmod,Modify a group | |
| 93,groups,Print group names a user is in | |
| 94,gzip,Compress or decompress named file(s) | |
| 95,hash,Remember the full pathname of a name argument | |
| 96,head,Output the first part of file(s) | |
| 97,history,Command History | |
| 98,hostname,Print or set system name | |
| 99,htop,Interactive process viewer | |
| 100,iconv,Convert the character set of a file | |
| 101,id,Print user and group id's | |
| 102,if,Conditionally perform a command | |
| 103,ifconfig,Configure a network interface | |
| 104,ifdown,Stop a network interface | |
| 105,ifup,Start a network interface up | |
| 106,import,Capture an X server screen and save the image to file | |
| 107,install,Copy files and set attributes | |
| 108,iostat,Report CPU and i/o statistics | |
| 109,ip,"Routing, devices and tunnels" | |
| 110,jobs,List active jobs • | |
| 111,join,Join lines on a common field | |
| 112,kill,Kill a process by specifying its PID | |
| 113,killall,Kill processes by name | |
| 114,klist,List cached Kerberos tickets | |
| 115,less,Display output one screen at a time | |
| 116,let,Perform arithmetic on shell variables • | |
| 117,link,Create a link to a file | |
| 118,ln,Create a symbolic link to a file | |
| 119,local,Create a function variable • | |
| 120,locate,Find files | |
| 121,logname,Print current login name | |
| 122,logout,Exit a login shell • | |
| 123,look,Display lines beginning with a given string | |
| 124,lpc,Line printer control program | |
| 125,lpr,Print files | |
| 126,lprm,Remove jobs from the print queue | |
| 127,lsattr,List file attributes on a Linux second extended file system | |
| 128,lsblk,List block devices | |
| 129,ls,List information about file(s) | |
| 130,lsof,List open files | |
| 131,lspci,List all PCI devices | |
| 132,man,Help manual | |
| 133,mapfile,Read lines from standard input into an indexed array variable • | |
| 134,mkdir,Create new folder(s) | |
| 135,mkfifo,Make FIFOs (named pipes) | |
| 136,mkfile,Make a file | |
| 137,mknod,Make block or character special files | |
| 138,mktemp,Make a temporary file | |
| 139,more,Display output one screen at a time | |
| 140,most,Browse or page through a text file | |
| 141,mount,Mount a file system | |
| 142,mtools,Manipulate MS-DOS files | |
| 143,mtr,Network diagnostics (traceroute/ping) | |
| 144,mv,Move or rename files or directories | |
| 145,mmv,Mass Move and rename (files) | |
| 146,nc,"Netcat, read and write data across networks" | |
| 147,netstat,Networking connections/stats | |
| 148,nft,nftables for packet filtering and classification | |
| 149,nice,Set the priority of a command or job | |
| 150,nl,Number lines and write files | |
| 151,nohup,Run a command immune to hangups | |
| 152,notify-send,Send desktop notifications | |
| 153,nslookup,Query Internet name servers interactively | |
| 154,open,Open a file in its default application | |
| 155,op,Operator access | |
| 156,passwd,Modify a user password | |
| 157,paste,Merge lines of files | |
| 158,Perf,Performance analysis tools for Linux | |
| 159,ping,Test a network connection | |
| 160,pgrep,List processes by name | |
| 161,pkill,Kill processes by name | |
| 162,popd,Restore the previous value of the current directory | |
| 163,pr,Prepare files for printing | |
| 164,printenv,Print environment variables | |
| 165,printf,Format and print data • | |
| 166,ps,Process status | |
| 167,pushd,Save and then change the current directory | |
| 168,pv,Monitor the progress of data through a pipe | |
| 169,pwd,Print Working Directory | |
| 170,quota,Display disk usage and limits | |
| 171,quotacheck,Scan a file system for disk usage | |
| 172,ram,ram disk device | |
| 173,rar,Archive files with compression | |
| 174,rcp,Copy files between two machines | |
| 175,read,Read a line from standard input • | |
| 176,readarray,Read from stdin into an array variable • | |
| 177,readonly,Mark variables/functions as readonly | |
| 178,rename,Rename files | |
| 179,return,Exit a shell function | |
| 180,rev,Reverse lines of a file | |
| 181,rm,Remove files | |
| 182,rmdir,Remove folder(s) | |
| 183,rsync,Remote file copy (Synchronize file trees) | |
| 184,screen,"Multiplex terminal, run remote shells via ssh" | |
| 185,scp,Secure copy (remote file copy) | |
| 186,sdiff,Merge two files interactively | |
| 187,sed,Stream Editor | |
| 188,select,Accept user choices via keyboard input | |
| 189,seq,Print numeric sequences | |
| 190,set,Manipulate shell variables and functions | |
| 191,setfacl,Set file access control lists. | |
| 192,sha256sum,Compute and check SHA256 (256-bit) checksums | |
| 193,shift,Shift positional parameters | |
| 194,shopt,Shell Options | |
| 195,shuf,Generate random permutations | |
| 196,shutdown,Shutdown or restart linux | |
| 197,sleep,Delay for a specified time | |
| 198,slocate,Find files | |
| 199,sort,Sort text files | |
| 200,source,Run commands from a file '.' • | |
| 201,split,Split a file into fixed-size pieces | |
| 202,ss,Socket Statistics | |
| 203,ssh,Secure Shell client (remote login program) | |
| 204,stat,Display file or file system status | |
| 205,strace,Trace system calls and signals | |
| 206,su,Substitute user identity | |
| 207,sudo,Execute a command as another user | |
| 208,sum,Print a checksum for a file | |
| 209,suspend,Suspend execution of this shell • | |
| 210,sync,Synchronize data on disk with memory | |
| 211,tabs,Set tabs on a terminal | |
| 212,tail,Output the last part of a file | |
| 213,tar,"Store, list or extract files in an archive" | |
| 214,tee,Redirect output to multiple files | |
| 215,test,Evaluate a conditional expression | |
| 216,time,Measure Program running time | |
| 217,timeout,Run a command with a time limit | |
| 218,times,User and system times | |
| 219,tmux,Terminal multiplexer | |
| 220,touch,Change file timestamps | |
| 221,top,List processes running on the system | |
| 222,tput,"Set terminal-dependent capabilities, color, position" | |
| 223,traceroute,Trace Route to Host | |
| 224,trap,Execute a command when the shell receives a signal • | |
| 225,tr,"Translate, squeeze, and/or delete characters" | |
| 226,true,"Do nothing, successfully" | |
| 227,tsort,Topological sort | |
| 228,tty,Print filename of terminal on stdin | |
| 229,type,Describe a command • | |
| 230,ulimit,Limit user resources • | |
| 231,umask,Users file creation mask | |
| 232,unalias,Remove an alias • | |
| 233,uname,Print system information | |
| 234,unexpand,Convert spaces to tabs | |
| 235,uniq,Uniquify files | |
| 236,units,Convert units from one scale to another | |
| 237,unix2dos,UNIX to Windows or MAC text file format converter | |
| 238,unrar,Extract files from a rar archive | |
| 239,unset,Remove variable or function names | |
| 240,unshar,Unpack shell archive scripts | |
| 241,until,Execute commands (until error) | |
| 242,useradd,Create new user account | |
| 243,userdel,Delete a user account | |
| 244,usermod,Modify user account | |
| 245,users,List users currently logged in | |
| 246,uuencode,Encode a binary file | |
| 247,uudecode,Decode a file created by uuencode | |
| 248,vi,Text Editor | |
| 249,vmstat,Report virtual memory statistics | |
| 250,w,Show who is logged on and what they are doing | |
| 251,wait,Wait for a process to complete • | |
| 252,watch,Execute/display a program periodically | |
| 253,wc,"Print byte, word, and line counts" | |
| 254,whereis,"Search the user's $path, man pages and source files for a program" | |
| 255,which,Search the user's $path for a program file | |
| 256,while,Execute commands | |
| 257,who,Print all usernames currently logged in | |
| 258,whoami,Print the current user id and name ('id -un') | |
| 259,write,Send a message to another user | |
| 260,xargs,"Execute utility, passing constructed argument list(s)" | |
| 261,xdg-open,Open a file or URL in the user's preferred application. | |
| 262,xxd,Make a hexdump or do the reverse | |
| 263,xz,Compress or decompress .xz and .lzma files | |
| 264,yes,Print a string until interrupted | |
| 265,zip,Package and compress (archive) files | |
| 266,.,Run a command script in the current shell | |
| 267,!!,Run the last command again | |
| 268,###,Comment / Remark | |