From: Matt Harrison <iwasinnamuknow@...>
Date: 2009-12-14T04:56:31+09:00
Subject: Re: getting shell output

On Mon, Dec 14, 2009 at 04:34:20AM +0900, Marvin G??lker wrote:
> Matt Harrison wrote:
> > I appears that dump writes all of its status output to stderr, and I can
> > redirect that on the command line using "2>&1" to get it into a file. 
> > I'm
> > unable however to find something similar for ruby.
> > 
> > I've tried backticks (``), %x{}. system() and exec() as well as 
> > IO.popen()
> > but they all fail to intercept the stderr output. I've even tried adding
> > "2>&1" to the command but it makes no difference.
> 
> Try open3 from the stdlib:
> --------------------------
> require "open3"
> Open3.popen3("command") do |stdin, stdout, stderr|
>   #Your code...
> end
> ---------------------------

Thanks Marvin, that works perfectly. God knows why stderr wasn't getting
intercepted with the others, but with open3 it works beautifully.

Thanks again

Matt