Novell LINUX ENTERPRISE DESKTOP 10 SP2 - DEPLOYMENT GUIDE 08-05-2008 Deployment Manual page 412

When changing into the same runlevel as the current runlevel, init only checks /etc/
inittab for changes and starts the appropriate steps, for example, for starting a
getty on another interface. The same functionality may be achieved with the command
telinit q.
17.2.2 Init Scripts
There are two types of scripts in /etc/init.d:
Scripts Executed Directly by init
This is the case only during the boot process or if an immediate system shutdown
is initiated (power failure or a user pressing Ctrl + Alt + Del ). The execution of
these scripts is defined in /etc/inittab.
Scripts Executed Indirectly by init
These are run when changing the runlevel and always call the master script
/etc/init.d/rc, which guarantees the correct order of the relevant scripts.
All scripts are located in /etc/init.d. Scripts that are run at boot time are called
through symbolic links from /etc/init.d/boot.d. Scripts for changing the run-
level are called through symbolic links from one of the subdirectories (/etc/init
.d/rc0.d to /etc/init.d/rc6.d). This is just for clarity reasons and avoids
duplicate scripts if they are used in several runlevels. Because every script can be exe-
cuted as both a start and a stop script, these scripts must understand the parameters
start and stop. The scripts also understand the restart, reload,
force-reload, and status options. These different options are explained in
ble 17.2, "Possible init Script Options"
do not have these links. They are run independently from the runlevel when needed.
Table 17.2
Option
start
stop
396 Deployment Guide
Possible init Script Options
Description
Start service.
Stop service.
(page 396). Scripts that are run directly by init
Ta-