KNOPPIX is an example of a distribution that boots straight
to a Linux desktop from a CD. That desktop system usually runs as a particular username (such as
knoppix, in the case of the KNOPPIX distribution). To perform system administration, you have to
switch to the administrator??™s account temporarily (using the su or sudo command).
NOTE
82
Linux First Steps Part I
Boot to a Graphical Login
Most desktop Linux systems that are installed on your hard disk boot up to a graphical login screen.
Although the X display manager (xdm) is the basic display manager that comes with the X Window
System, KDE and GNOME each have their own graphical display managers that are used as login
screens (kdm and gdm, respectively). So chances are that you will see the login screen associated
with KDE or GNOME (depending on which is the default on your Linux system).
When Linux starts up, it enters into what is referred to as a run level or system state.
Typically, a system set to start at run level 5 boots to a graphical login prompt. A system
set to run level 3 boots to a text prompt. The run level is set by the initdefault line in the
/etc/inittab file. Change the number on the initdefault line as you please between 3 and 5.
Don??™t use any other number unless you know what you are doing.
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