From: jqwoods@...
Date: 2008-03-15T04:49:58+09:00
Subject: Re: How to separate stdout & stderr from executed shell comm

On Mar 14, 12:16 pm, Rodrigo Bermejo <rodrigo.berm...@ps.ge.com>
wrote:
> unknown wrote:
> > On Mar 14, 11:40 am, jqwo...@gmail.com wrote:
>
> >>   irb> my_exec_command("ls NON_existant_file")
> >>   => ["", "ls: NON_existant_file: No such file or directory\n", 2]
>
> >> Any pointers on how to implement my_exec_command?
>
> > PS: Unless there's a simpler way, if someone could just point me to an
> > API that provides stdout and stderr of sub-processes as IO objects, I
> > could probably figure it out from there. Thanks!
>
> Take a look at the IO class.
> The Pickaxe book has some good examples.
>
> -r.
> --
> Posted viahttp://www.ruby-forum.com/.

The closest API I could find is IO::popen. But as the doc for
IO::popen says "...the subprocess's standard input and output will be
connected..." So far I haven't found any way to get stdout and stderr
of a sub-process *separately*.

Any other pointers?