B.3.5 A Brief List of Linux Text Commands

My recommendation is that you purchase a text that sets out in rather detailed fashion all of the common commands that ship with Linux. Beyond this there are also a set of commands that may be specific to the distribution that you are using and you should consult a manual specific to that.

**Table B.1:** Short List of File Commands
What It Does	Command	Sample
List Directory Contents	ls	ls -l /home/ray/*.rpm
Change Working Directory	cd	cd /usr/local/emc
Copy File	cp	cp emc.ini mymill.ini
Move File	mv	mv mymill.ini bobmill.ini
Remove File	rm	rm mymill2.ini
Change File Owner	chown	chown ray mymill.*
Change File Group	chgrp	chgrp operators mymill.*
Change File Permissions	chmod	chmod a+rwx mymill.*
Make a Directory	mkdir	mkdir /usr/local/emc2
Remove a Directory	rmdir	rmdir /usr/local/emc2
View All Contents of File	cat	cat /usr/local/emc/emc.run
View Chunks of File	more	more /usr/local/emc/emc.run

Note that you will have to own files in order to change ownership group or permissions or you will have to issue these commands as root (su).
A directory must be empty to remove it with rmdir. An alternative is to use the rm command with -Rf and the directory name starred.

**Table B.2:** Short List of General Commands
What It Does	Command
Super User Mode	su
Who Am I	whoami
Where Am I	pwd
Drive Free Space	df
Shut Down PC	halt -n
Reboot PC	reboot