topic Re: /bin/sh scripts: process still alive when the father die. in Operating System - HP-UX

/bin/sh scripts: process still alive when the father die.

bernard bedetti — Thu, 18 Sep 2003 07:09:02 GMT

I'd like to know if it is possible that a script 'X' (which contains a loop with a sleep) launched from another script 'Y', remains alive when the script 'Y' die ?
1. I think I have to use the trap instruction, but I don't know exactly how.
2. Could be another solution ?
I hope I'm clear enough !

Re: /bin/sh scripts: process still alive when the father die.

Mark Grant — Thu, 18 Sep 2003 07:16:33 GMT

Two things I can think of here.

Probably the most sensible thing is to run script X using the "nohup" command.

If you want to trap signals in a script, choose your signal "kill -l" will list the possible signals and do a

trap "" 2 for example.

I think SIGQUIT is the one you are after but signals get sent to all processes in a process group so you would have to trap pretty much everything for all the possible signals that might have killed the parent.

Re: /bin/sh scripts: process still alive when the father die.

bernard bedetti — Thu, 18 Sep 2003 08:38:54 GMT

Thanks really a lot. It works fine with the 'nohup' instruction.