Command	Description	Example
chown	Change owner of files and directories	chown file
chgrp	Change group ownership of files and directories
chmod	Change protection mode of files and directories	chmod 777 file
clear	Clears your display or shell window	clear
ps	Displays informatino about running processes	ps
cp	Copies a file	cp file1 file2
mv	Moves or renames a file	mv file1 file2
startx	Starts GUI interface	startx
vi	Starts the VI editor	vi file1
su	Switch User	su user2
less	View text one page or window at a time	less file1
more	Filter for paging thru text on screen at a time	more file1
mkdir	Make directory	mkdir dir2
touch	Create an empty file	touch file1.txt