This chapter discussed the procedures for adding and removing user and
groups. You should be able to do these tasks using the provided scripts
and by hand, should the need arise. Additionally, you should know what
the various parts of adding a user do, techniques for selecting a password,
and how to change user information. Finally, you should know how to shut
down your computer properly and why it is important to do so. These are
all important parts of administering a system whether it is your home
computer or a large network server.