Name	Argument	Description
pwd		Print Working Directory
ls	file or directory	List Directory
cd	directory	Change Directory
man	command	Manual: tell me about the command
more	filename	Page through a file
less	filename	Page through a file. Less is more
cat	filename	Print the whole file at once
which	command	Print pathname to executable
file	filename	What kind of file is this?
od	filename	Octal Dump: what is inside this file?
date		The current date
hostname		What is the name of this computer?
rm	filename	ReMove (delete) file
cp	old new	Make a copy of file old
mv	old new	Move (rename) a file or directory
wc	filename	Print the number of lines, words, and characters in the file
mkdir	directoryname	Create a sub directory
rmdir	directoryname	Delete a directory
pushd	pathname	Push current directory on a stack and move to named directory
popd		Return to top directory on the stack
find	pathname	List the files below this point
grep	pattern filename	print all lines in the file that match the pattern
env		List the current environment
echo	$symbol	Print the value of the environment variable
sudo	command	Run the command as admin. DANGER Will Robinson!