followed by Ctrl-k, you can delete the entire command line. Ctrl-y pastes
the last thing you killed, reinserting it at the current cursor position
(y stands for ``yank,'' as in ``yank it back''). Ctrl-e will move the
cursor to the end of the command line.

Go ahead and play around with command-line editing to get a feel for it.
Experiment.

Working as Root

Because Debian is a multiuser system, it's designed to keep any one user
or program from breaking the entire system. The kernel will not allow
normal users to change important system files. This means that things stay
the way they're supposed to, safe from accidents, viruses, and even
malicious pranks. Unlike other operating systems, Debian is safe from
these threats. You won't need an anti-virus program.

However, sometimes you need to change important system files; for example,
you might want to install new software or configure your network
connection. To do so, you have to have greater powers than a normal user;
you must become the root user (also called the superuser).

To become root, just log on with the username root and the root password;
this was set during installation, as described in section 3.15 on page
[*].

At many sites, only the system administrator has the root password, and
only the system administrator can do the things that one must be root to
do. If you're using your own personal computer, you are the system
administrator, of course. If you don't have root privileges, you will have