From: Tim Kynerd <tim@...>
Date: 2003-02-16T05:21:25+09:00
Subject: Re: Capturing output from Kernel#system

On Sat, 15 Feb 2003 18:32:06 +0100, Tim Kynerd wrote:

> Maybe I'm dumb, I dunno.
> 
> I need to execute an external command and capture the output from it in a
> Ruby structure.
> 
> When I use the Kernel#system method to do this, I get the output just
> fine, but I can't figure out how to capture it. The method returns true,
> of course, but obviously true isn't what I want to capture!
> 
> I'd like to avoid the obvious kludge of writing the command output to a
> file and reading the file in Ruby. Isn't there a better way than that? The
> pickaxe book isn't helping me here at all (maybe I didn't look where I
> should have...).
> 
> Thanks for any help you can provide.

Fished around a little more in the pickaxe book and discovered the
IO#popen method, which does the trick. Verrrrrry interesting....

-- 
Tim Kynerd   Sundbyberg (sm�stan i storstan), Sweden   tim@tram.nu
Sunrise in Stockholm today:  7:31
Sunset in Stockholm today:  16:31
My rail transit photos at http://www.kynerd.nu