| |
| alias | | Create an alias |
| awk | | Find and Replace text, database sort/validate/index
|
| break | | Exit from a loop |
| builtin | | Run a shell builtin |
| cal | | Display a calendar |
| cse | | Conditionally perform a command
|
| cat | | Display the contents of a file |
| cd | | Change Directory |
| cfdisk | | Partition table manipulator for Linux
|
| chgrp | | Change group ownership
|
| chmod | | Change access permissions
|
| chown | | Change file owner and group |
| chroot | | Run a command with a different root directory
|
| cksum | | Print CRC checksum and byte counts clear Clear terminal screen |
| cmp | | Compare two files |
| comm | | Compare two sorted files line by line |
| command | | Run a command - ignoring shell functions |
| continue | | Resume the next iteration of a loop
|
| cp | | Copy one or more files to another location
|
| cron | | Daemon to execute scheduled commands |
| crontab | | Schedule a command to run at a later time
|
| csplit | | Split a file into context-determined pieces |
| cut | | Divide a file into several parts |
| date | | Display or change the date & time |
| dc | | Desk Calculator |
| dd | | Data Dump - Convert and copy a file |
| declare | | Declare variables and give them attributes
|
| df | | Display free disk space
|
| diff | | Display the differences between two files
|
| diff3 | | Show differences among three files
|
| dir | | Briefly list directory contents |
| dircolors | | Colour setup for `ls'
|
| dirname | | Convert a full pathname to just a path |
| dirs | | Display list of remembered directories |
| du | | Estimate file space usage |
| echo | | Display message on screen ed A line-oriented text editor (edlin) |
| egrep | | Search file(s) for lines that match an extended expression eject Eject CD-ROM |
| enable | | Enable and disable builtin shell commands |
| env | | Display, set, or remove environment variables |
| eval | | Evaluate several commands/arguments |
| exec | | Execute a command exit Exit the shell |
| expand | | Convert tabs to spaces |
| export | | Set an environment variable |
| expr | | Evaluate expressions |
| factor | | Print prime factors |
| false | | Do nothing, unsuccessfully |
| fdformat | | Low-level format a floppy disk |
| fdisk | | Partition table manipulator for Linux |
| fgrep | | Search file(s) for lines that match a fixed string |
| find | | Search for files that meet a desired criteria |
| fmt | | Reformat paragraph text |
| fold | | Wrap text to fit a specified width. |
| for | | Expand words, and execute commands format Format disks or tapes free Display memory usage |
| fsck | | Filesystem consistency check and repair. |
| function | | Define Function Macros |
| gawk | | Find and Replace text within file(s) |
| getopts | | Parse positional parameters |
| grep | | Search file(s) for lines that match a given pattern |
| groups | | Print group names a user is in |
| gzip | | Compress or decompress named file(s) |
| hash | | Remember the full pathname of a name argument |
| head | | Output the first part of file(s)
|
| history | | Command History |
| hostname | | Print or set system name |
| id | | Print user and group id's |
| if | | Conditionally perform a command |
| import | | Capture an X server screen and save the image to file |
| info | | Help info |
| install | | 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 time |
| let | | Perform arithmetic on shell variables |
| ln | | Make links between files |
| local | | Create variables |
| locate | | Find files |
| logname | | Print current login name |
| logout | | Exit a login shell |
| lpc | | Line printer control program |
| lpr | | Off line print lprint Print a file lprintd Abort a print job lprintq List the print queue |
| lprm | | Remove jobs from the print queue |
| ls | | List information about file(s) |
| m4 | | Macro processor |
| man | | Help manual |
| mkdir | | Create new folder(s) |
| mkfifo | | Make FIFOs (named pipes) |
| mknod | | Make block or character special files |
| more | | Display output one screen at a time |
| mount | | Mount a file system |
| mtools | | Manipulate MS-DOS files |
| mv | | Move or rename files or directories |
| nice | | Set the priority of a command or job |
| nl | | Number lines and write files |
| nohup | | Run a command immune to hangups |
| passwd | | Modify a user password |
| paste | | Merge lines of files pathchk Check file name portability |
| popd | | Restore the previous value of the current directory |
| pr | | Convert text files for printing printcap Printer capability database printenv Print environment variables |
| printf | | Format and print data |
| ps | | Process status |
| pushd | | Save and then change the current directory |
| pwd | | Print Working Directory |
| quota | | Display disk usage and limits |
| quotacheck | | Scan a file system for disk usage |
| quotactl | | Set disk quotas |
| ram | | ram disk device |
| rcp | | Copy files between two machines. |
| read | | read a line from standard input |
| readonly | | Mark variables/functions as readonly remsync Synchronize remote files via email |
| return | | Exit a shell function |
| rm | | Remove files |
| rmdir | | Remove folder(s) |
| rpm | | Remote Package Manager |
| rsync | | Remote file copy (Synchronize file trees) screen Terminal window manager |
| sdiff | | Merge two files interactively |
| sed | | Stream Editor |
| select | | Accept keyboard input |
| seq | | Print numeric sequences |
| set | | Manipulate shell variables and functions |
| shift | | Shift positional parameters |
| shopt | | Shell Options |
| shutdown | | Shutdown or restart linux |
| sleep | | Delay for a specified time |
| sort | | Sort text files |
| source | | Run commands from a file `.' |
| split | | Split a file into fixed-size pieces |
| su | | Substitute user identity |
| sum | | Print a checksum for a file |
| symlink | | Make a new name for a file |
| sync | | Synchronize data on disk with memory |
| tac | | Concatenate and write files in reverse |
| tail | | Output the last part of files |
| tar | | Tape ARchiver |
| tee | | Redirect output to multiple files |
| test | | Evaluate a conditional expression |
| time | | Measure Program Resource Use |
| times | | User and system times |
| touch | | Change file timestamps |
| top | | List processes running on the system |
| traceroute | | Trace Route to Host trap Run a command when a signal is set(bourne) |
| tr | | Translate, squeeze, and/or delete characters |
| true | | Do nothing, successfully |
| tsort | | Topological sort |
| tty | | Print filename of terminal on stdin |
| type | | Describe a command |
| ulimit | | Limit user resources |
| umask | | Users file creation mask umount Unmount a device |
| unalias | | Remove an alias |
| uname | | Print system information |
| unexpand | | Convert spaces to tabs |
| uniq | | Uniquify files |
| units | | Convert units from one scale to another |
| unset | | Remove variable or function names |
| unshar | | Unpack shell archive scripts |
| until | | Execute commands (until error) |
| useradd | | Create new user account |
| usermod | | Modify user account |
| users | | List users currently logged in |
| uuencode | | Encode a binary file
|
| uudecode | | Decode a file created by uuencode v Verbosely list directory contents (`ls -l -b') vdir Verbosely list directory contents (`ls -l -b') |
| watch | | Execute/display a program periodically |
| wc | | Print byte, word, and line counts |
| whereis | | Report all known instances of a command |
| which | | Locate a program file in the user's path. |
| while | | Execute commands |
| who | | Print all usernames currently logged in whoami 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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