System V–type system: init process

On a System V–type system, the init process does the following as it gets the system up and running:

Runs the /etc/rc.d/sysinit script to prepare the system

Processes /etc/inittab to determine the appropriate runlevel and scripts

Runs the scripts in the appropriate runlevel directory in /etc/rc.d/

Runs the /etc/rc.d/rc.local script