From: Jason Wold <jason.wold@...>
Date: 2004-04-28T16:00:36+09:00
Subject: Re: popen, popen3, and leftover processes

>io=IO.popen("sleep 1000")
=> #<IO:0x40140a8c>

>io.pid
=> 2676

>puts `ps auwx | grep sleep`
ital      2676  0.0  0.1  1900  472 pts/0    S    23:58   0:00 sleep 1000
ital      2677  0.0  0.3  2048  872 pts/0    S    23:59   0:00 sh -c
ps auwx | grep sleep
ital      2679  0.0  0.1  1500  432 pts/0    S    23:59   0:00 grep sleep
=> nil


On Wed, 28 Apr 2004 15:52:49 +0900, Hal Fulton <hal9000@hypermetrics.com> wrote:
> 
> I'm getting processes left lying around when I do things
> like
> 
>    io = IO.popen("foo")  # or...
>    inp, out, err = Open3.popen3("foobar")
> 
> I've tried such things as closing the io object, but to
> no avail.
> 
> I see no way of retrieving the pid in either case.
> 
> What can I do?
> 
> Thanks,
> Hal
> 
>