Ref: http://dir.yahoo.com/Computers_and_Internet/Software/Operating_Systems/Unix/Shells/
$ PS1='$ ' $ EDITOR=emacs $ pine $ PATH=/usr/local/bin:$PATH $ pine |
$ who $ whom $ who am i $ who are you $ who -h |
$ echo one two three $ echo "one two" three $ echo My prompt is $PS1 $ echo "My prompt is $PS1" $ echo 'My prompt is $PS1' $ echo My prompt is \$PS1 $ echo My prompt is \\$PS1 $ echo "My path is > $PATH" |
On to Filesystem Basics