For a few things I am interested in doing, I wanted to be able to have a small script preparing as soon as I boot up. Perhaps it is more interesting to use atd or cron for this but I wanted to make sure how the initscript system works.
So I prepare a small script in order to start some system tools as soon as the boot process is finished.
For example, a little tool starting a remote process when I first boot which would allow me to use some remote processing facilities, e.g (focused) crawler. This could be also some system starting before/after the httpd daemon is up.
For this I took a look at the /etc/init.d/postgres script.
#!/bin/sh # newscript This is the init script for starting up the newscript
# service
#
# chkconfig: - 99 99
# description: Starts and stops the newscript that handles \
# all newscript requests.
# processname: mynewscript
# pidfile: /var/run/mynewscript.pid
# Version 0.1 myname
# Added code to start newscript
Note the use of chkconfig: - 99 99 .
This should be adapted with more useful priorities, basically 99 means that the initscript is started as one of the last scripts. Taking a look at $man chkconfig should prove useful.
The new script stores the pid of the newscript application in /var/run/mynewscript.pid
Note that it also stores things in /var/lock/subsys/