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Date: Sat, 9 Apr 2011 08:35:23 +1000
Subject: Re: How to get a PID of a child process from a process openden with Popen()
From: Chris Angelico <rosuav@gmail.com>
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On Sat, Apr 9, 2011 at 5:28 AM, Nobody <nobody@nowhere.com> wrote:
> There isn't a robust solution to the OP's problem. It's typically
> impossible to determine whether one process is an ancestor of another if
> any of the intermediate processes have terminated.

Upstart and gdb can both detect forks and follow the child. But I
think that's getting into some serious esoteria that's unlikely to be
of much practical use here.

Chris Angelico