Useful Commands

Below is list of useful commands. Click the arrow icon to display a usage example. For more detailed information on a command, run man command.

Command	Description

`man`	Display the on-line manual pages
`who`	Show who is logged in
`passwd`	Modify your password
`pwd`	Print name of current working directory
`cd`	Change current directory
`ls`	List directory contents
`mkdir`	Make directory
`mv`	Move or rename files and directories
`cat`	Print file on standard output
`more`	Display a file, one screen at a time
`less`	Less is more (more or less)
`head`	Display the first part of a file
`tail`	Display the last part of a file
`cp`	Copy files and directories
`rm`	Remove/delete a file
`nano`	Simple text editor
`vi`	Text editor
`emacs`	Text editor
`gedit`	Graphical text editor
`id`	Print user identity
`whoami`	Print username
`groups`	Print the groups a user is in
`chmod`	Change file access permissions
`which`	Show the full path of a command
`touch`	Change file access and modification time
`echo`	Output a line of text
`date`	Prints the system date and time
`w`	Show who is logged in and what they are doing
`top`	Display and update sorted information about processes
`wc`	Print line, word, and character counts for a file
`file`	Determine file type
`gzip,gunzip`	Compress or expand files
`hostname`	Show the system's host name
`ssh`	Remote login program
`diff`	Compare files line by line
`grep`	Search a file for a string or pattern
`ed`	Line-oriented text editor
`ps`	Process status
`sleep`	Delay for a specified amount of time
`env,printenv,set`	Print environment variables

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