The (init.d|Initialization) directory contains start/stop scripts used during the OS initialization phase.
Everything from acpid to x11-common is controlled from this directory.
|/etc/rc.d/init.d/||Red Hat/Fedora||You can use also /etc/init.d/ which is linked to /etc/rc.d/init.d/|
|/etc/init.d/||S.u.s.e. / Solaris|
|/etc/init.d/||Ubuntu / Debian|
To be able to start this script on all init level, soft-links should be placed in /etc/rc[0-6].d