December 2003
Intermediate to advanced
458 pages
9h 3m
English
book
Deploying Linux on IBM eServer pSeries Clusters
by Dino Quintero, Prabhakar Attaluri, Tomas Baublys, Xinghong He, Chin Yau Lee, Francois Thomas
Content preview from Deploying Linux on IBM eServer pSeries Clusters
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3.4. Runlevels
Init is a process started by the kernel during the boot, and it takes over the control of the start sequence. The main configuration file is /etc/inittab. In this file we can provide the default runlevel. The default runlevel for systems with graphical login is 5 without 3.
The first script started by init is /etc/init.d/boot, after it runs all startscripts in /etc/init.d/rc3.d (or rc5.d, for runlevel 5). If you want to add something to be run before the runlevel scripts, add it to /etc/init.d/boot.local.
If you need to add something in runlevel 3 or runlevel 5, then place your script in /etc/init.d and place a link starting with S+number and K+number in /etc/initrd/rc5.d.
Tip
On SuSE SLES8, use /etc/init.d/skeleton as a template ...