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From: Jim Meyering <jim@meyering.net>
To: "Frank Ch. Eigler" <fche@redhat.com>
Cc: Jason Merrill <jason@redhat.com>,  overseers@gcc.gnu.org
Subject: Re: Multiple cvs/git mirror tasks?
In-Reply-To: <87txxbr67m.fsf@rho.meyering.net> (Jim Meyering's message of
	"Fri, 13 Jul 2012 18:11:57 +0200")
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	<20120713155449.GB14467@redhat.com> <87629rsl2y.fsf@rho.meyering.net>
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Date: Fri, 13 Jul 2012 16:17:00 -0000
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Jim Meyering wrote:

> Jim Meyering wrote:
>
>> Frank Ch. Eigler wrote:
>>> Hi -
>>>
>>> meyering wrote:
>>>
>>>> [...] Any idea how we'd get three of each, with each triple starting
>>>> at the same minute?
>>>
>>> There appeared to be a bunch of crond's running for some reason;
>>> stopped all but one.
>>
>> Thanks.  I've killed the binutils-related processes and restarted
>> one manually.
>
> How strange.
> The run I just started via "bash -x ~/bin/mirror-sw binutils" is now
> showing up in ps auxww output as three different processes:
>
>     meyering 32694  0.0  0.0  6352 1020 pts/0    S+   16:05   0:00 \
>       bash -x /home/meyering/bin/mirror-sw binutils
>     meyering 32704  0.0  0.0  6352  504 pts/0    S+   16:05   0:00 \
>       bash -x /home/meyering/bin/mirror-sw binutils
>     meyering 32705  0.0  0.0  6352  560 pts/0    S+   16:05   0:00 \
>       bash -x /home/meyering/bin/mirror-sw binutils
>
> How strange.

I suspect it's normal after all, since it's running this:

    filter_stderr()
    {
      # Usage: filter-stderr EGREP_REGEXP 'command'
      regex=$1 cmd=$2
      (exec 3>&1; eval "$cmd" 2>&1 >&3 | grep -E -v "$regex" 1>&2)
    }
    ...
    filter_stderr "$mirror_re" "$mirror_cmd"

and ps is just showing the eval'd subshell and filter-running processes
with the name of the parent.