Runlevels
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Les runlevels
Runlevels are init Scripts graphically configurable with Gservice.
If you don't specify additional parameter (example : 'init=/path/to/init'), the kernel will start /sbin/init at the end of its boot.
According to /etc/inittab, init will launch :
- 1) Each script S* in /et/rc.d/rcS.d
- 2) Each script S* in /etc/rc.d/rcn.d, where n is the execution level. By default, the execution level is defined to 4.
List of available execution levels :
- 0 = stop
- 1 = simple user mode
- 2 = unused (but configured like the level 3)
- 3 = multi-user mode (text only)
- 4 = multi-user mode, X11 with KDM/GDM/XDM (level by default on Frugalware)
- 5 = unused (but configured like the level 3)
- 6 = reboot
If X11 is configured, /etc/rc.d/rc.4 will launch a desktop environment, like it is configured in /etc/sysconfig/desktop.