[NTLUG:Discuss] Weird Script behaviour -- killing script does not kill child processes - Why?

[Wayne Walker]

in your script, somewhere you call java, no matter how complicated the script is.
on the very next line do:

echo $! > /foo.manual.pid

Now you have a pid file you can trust.

As to why killing the parent script doesn't kill the child, that's a
long discussion about signal handlers.  "man signal"  once you read that,
if you still want to know more, email me on or off list.

On Tue, Dec 04, 2007 at 06:22:58PM -0600, Stephen Davidson wrote:
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> Greetings.
> 
> I've been working on a piece of Server software and have been having fun
> and games with startproc.
> 
> The general idea:
> Due to a fairly complex command line, I have a shell script that is
> actually launching the server process.  The server process is a Java
> process running as a child of that shell script.
> 
> The minor issue - even though the -p /file.pid is used, no pid file is
> getting created.
> 
> The MAJOR issue - when the Shell script that launched the java process
> is killed, either by startproc or otherwise, the child Java Process is
> NOT killed.
> 
> Any ideas on how to kill a child process of a command line script
> automatically, when there is no PID stored during startup?
> 
> - -Steve
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> _______________________________________________
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-- 

Wayne Walker

# Code comments are lies waiting to happen

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