bash script running as daemon
 

Hi all,

I have written a bash script to ease my administration.
However, what i would like is, whenever i start this program, it will immediately get in the background and "daemonizes". (Meaning, that it will keep running, even if i log out.)

Is this possible with bash-scripts???
If it works as i expected, i would like to run it as service at startup (put it in the rc.d or rc.local orso), but it should also work as executable....

thanks for your help!

Satch

Did you try to put:
/path/to/your/script &

in /etc/rc.d/rc.local so it start at boot, run in background, and keep running even if you log out

I see what you mean, however, i want to be able to start it by hand in the first period...

You could try your program with & to test it in background, but to keep it running out of the user
session I think you have to run it as root

Running it as root was the trick i was lookin for! It now works!

thanks Cedrik!

you can use detachtty if you want to run it as a user.

or nohup

Mmm.. how should i run it then?
Should i enter something like that in the script?
If you could give an code-example, that would be great!

nohup <script-name> &

-twantrd

Since you are using Redhat you have a script handy which will launch a process as a daemon. The script is /etc/rc.d/init.d/functions and you could source that in your script and launch the process like this:

. /etc/rc.d/init.d/functions
daemon /path/to/my/script

This is from memory so you should double check the functions script to verify exactly how to call the daemon function.

Also, look at this HTTPD server written in sh script. It is a good example of a sh TCP deamon ( Main URL)

Thanks bin/bash, but i am currently ot using RH, but Slackware... (Should update my profile, as you pointed me to this)

I could look in the script, i have a redhat machine somewhere..... :)

Also followd the link to that sh_httpd but it didn't help me further (yet)

cute, but it's not a daemon, it appears to be a service that is launched on demand by sometheing like xinetd.