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From: Matthew Woehlke <mwoehlke@tibco.com>
Subject:  Re: How do I kill a grandchild process from shell program?
Date:  Tue, 24 Oct 2006 14:56:17 -0500
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Jim Seymour wrote:
> I have two shell programs - one that launches the other in the 
> background.  The background one runs a utility program that (under 
> normal circumstances) will shut down gracefully.
> 
> However, if things don't work fine, the background process sticks around 
> to plague me later.
> 
> I'd like to end my main script by killing the background process (if 
> it's still around), but I'm having a helluva time figuring out HOW.
> 
> I can use "kill $!" in the main script, but that only kills the 
> background bash process, leaving the utility program running.
> 
> Questions:
> 1) Is "kill %?name" supposed to work in this environment?
> 2) Is there a simple way to kill a process along with its children?

'kill -SIGHUP <process>'? Or if the child is a bash script, you might be 
able to re-write it to trap a signal (e.g. SIGUSR1) that instructs the 
child to kill /its/ child (the assumption being that the child knows its 
own child's PID).

-- 
Matthew
Only Joe suffers from schizophrenia. The rest of us enjoy it.


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