Introduction to Basic Linux

This page describes basic Linux commands for using in Clark and Lewis clusters. This is the topic for our "Intro to Basic Linux" training.

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Course Content

Command	Description
`--help`	Used with a command to get info on syntax/options. Ex: `ls --help`
`man`	Gives access to the 'man pages' or 'manual pages'. Ex: `man ls`
`whoami`	Prints who the user is
`date`	Outputs the date according to the system
`hostname`	Outputs the host name of the system
`pwd`	Prints the full path name of the file or directory
`up arrow`	Hitting the up arrow on your keyboard will display the last run command
`history`	Outputs all previously used commands
`tab complete`	To complete a command without typing the full command hit tab
`control+c`	To kill the foreground process hit control+c

Command	Description
`cat`	Used to make files, redirect files, and to read the contents of a file
`ls`	Used to list files and directories
`cp`	Used to copy
`mv`	Used to move files
`rm`	Used to remove files
`mkdir`	Used to make new directories
`vim`	The Vim text editor
`less`	Used to paginate text. Ex: `less job_output.txt`
`touch`	Creates new empty files
`chmod`	Used to change file permissions
`chown`	Used to change the owner of a file or directory

Command	Description
`stdout`	Standard output
`stderr`	Standard error
`>`	Standard redirect
`>>`	Standard append
`2>&1`	Redirects standard error to standard output
`\|`	Allows the first command output to go into the second command
`grep`	Searches files based on a work or string