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From: SZABO Gergely <gergely DOT szabo AT knorr-bremse DOT com>
Subject: Re: R: Why mc start without subshell by default?
Date: Wed, 3 Nov 2010 12:45:39 +0000 (UTC)
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Marco Atzeri <marco_atzeri <at> yahoo.it> writes:

> 
> --- Mer 3/11/10, Oleksandr Gavenko  ha scritto:
> 
> > I can turn on subshell by:
> > 
> >   $ mc -U
> > 
> > This is useful by default or I miss something?
> > 
> > 
> 
> It is useful but there is one problem on cygwin.
> When you close mc the subshell will not exit, so you will finish
> with a "zombie" bash shell running.
> 
> Marco
> 
> 

I thought mc's lacking subshell support is a hard fact of life in Cygwin, until
the -U option was pointed out here. It's a huge improvement.

It's quite easy to kill the zombie subshells.
Put a line into /etc/crontab (assuming you're running cron):

*/6 * * * * SYSTEM ps -a | sed -n 's/I  *\([0-9][0-9]*\)  *1  *..*bash$/\1/p' |
xargs kill -KILL

This will kill all bash processes every 6 minutes, who are waiting for input in
the background (I) and whose parent process (PPID) is 1 (not a terminal, not mc).

Best regards
Gergely



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