Hi everyone,
I am working with Nagios under Red Hat Enterprise AS
Nagios uses some addons like nsca or nrpe, to monitor remote servers.
They are common processes that I can start or stop via executabel, say 'nrpe -c nrpe.cfg'
Now, I would like to create scripts in order to make the management of such processes easier. I would like to be able to do a 'nrpe start', 'nrpe stop' and 'nrpe status', for instance. Also, I would like the system to automaticcally start these services at runlevel 3. I am not a bash programmer, and I would like to find a book or something similar with some script samples and a minimal theory of startup and shutdown scripts under red hat. I don't want to learn the entire bash programming - if possible! - but something more specifical. I have 'Advanced Bash Scripting Guide', but it's too huge for my aims and there are not examples of startup scripts.
Anyone can suggest me something ?

Have a look at the scripts in /etc/init.d.
Most of them cover options like "start", "stop", "status" etc.
They are fairly simple Bash scripts, so with the help of your guide, you should be able to understand them.
If you still have trouble or questions, don't hesitate to post back.

You can use /sbin/chkconfig (see it's man page for details) to make your system start certain services (represented by scripts in /etc/init.d) when entering any runlevels you like.
It requires that you put a special comment at the top of the script to indicate the order in which you start the services (ie the service launch order).

gives a list of all currently installed services and the runlevels they're configured to run in.

Edit: when you've successfully created the /etc/init.d script, you can launch/stop the service by typing:

Also, if you didn't install from rpm you *still* can extract the initscript from the rpm, test and use it.

Ok. thank you all. Have you any suggestion about further readings I could afford ? Books or online articles ?