Novell LINUX ENTERPRISE SERVER 11 - ADMINISTRATION Administration Manual page 81

To change runlevels while the system is running, enter telinit and the corresponding
number as an argument. Only the system administrator is allowed to do this. The fol-
lowing list summarizes the most important commands in the runlevel area.
telinit 1 or shutdown now
The system changes to single user mode. This mode is used for system maintenance
and administration tasks.
telinit 3
All essential programs and services (including network) are started and regular
users are allowed to log in and work with the system without a graphical environ-
ment.
telinit 5
The graphical environment is enabled. Usually a display manager like XDM, GDM
or KDM is started. If autologin is enabled, the local user is logged in to the prese-
lected window manager (GNOME or KDE or any other window manager).
telinit 0 or shutdown -h now
The system halts.
telinit 6 or shutdown -r now
The system halts then reboots.
Runlevel 5 is the default runlevel in all SUSE Linux Enterprise Server standard instal-
lations. Users are prompted for login with a graphical interface or the default user is
logged in automatically. If the default runlevel is 3, the X Window System must be
configured properly, as described in
the runlevel can be switched to 5. If this is done, check whether the system works in
the desired way by entering telinit 5. If everything turns out as expected, you can
use YaST to set the default runlevel to 5.
WARNING: Errors in /etc/inittab May Result in a Faulty System Boot
If /etc/inittab is damaged, the system might not boot properly. Therefore,
be extremely careful while editing /etc/inittab. Always let init reread
/etc/inittab with the command telinit q before rebooting the machine.
Chapter 12, The X Window System
Booting and Configuring a Linux System
(page 145), before
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