From: Jeremy Bopp <jeremy@...>
Date: 2010-12-30T03:31:58+09:00
Subject: Re: platform independent piped input stream from system call

On 12/29/2010 12:10 PM, Danny Challis wrote:
> Hi all,
>    I want to get an input stream from a system command in this manner:
> 
> f = open("|ls")
> while( [not end of output] )
>   f.gets
> end
> 
> but I would like it to be platform independent.  The output of the
> command I'll be using is massive (hundreds of GB) so I cannot load to
> memory or write to a temp file. Is there a good platform-independent way
> to do this?

Check out IO.popen:

http://rdoc.info/stdlib/core/1.9.2/IO.popen

-Jeremy