daemon process and login via script

[itsnammu]

i want to write a script which will start automatically at whenthe system boots and will run in the daemon mode continously, please suggest.
in this script i want to login to a particular user and want to perform some task.

please suggest how should i start a daemon at system startup and then from a script login to a diffrent user, i have access to the password

 

[coffeysm]

I am not quite sure what you mean by daemon mode, or do you mean to run in the background?

#!/bin/sh

su - USER -c "command &

 

[bfitzmai]

To start a script during system initialization, you can put the script in /etc/rc3.d. The name of the script must start with a captial "S". If you put the script in /etc/rc3.d, the system will start your process during initialization to run level 3. Depending on what your script is doing, you may want to write a kill script to kill the process when the system is being shutdown. You would put that script in /etc/rc2.d. The name of the script must start with a captial "K".

 

[KenCunningham]

Have a look at some of the scripts in rc3.d They should give you an idea of the 'standard' way of doing this.

 

[SBSaikia]

I agree with "coffeysm"'s suggestion:

only add a "nohup" to keep it running in background.
eg:
#!/bin/ksh
su - USER -c "cd /dir; nohup ./command &"

Hope this will help.