TIP: In this Linux distribution, the prompt is followed by a #:
# means you're giving Linux commands as the Root user. As the Root user, you can add/delete/modify any file on the computer.
On other Linux distributions the terminal prompt is followed by a $.
$ means you're giving commands as a regular user.
If your terminal prompt is followed by a $, type:
at the prompt.
Then press the ENTER key on your keyboard.
Giving the su command allows you to give commands as the "Super User," or Root user, of the computer.