From: Lawrence Oluyede <raims@...>
Date: 2005-05-14T03:05:29+09:00
Subject: Re: Get back data from a child (with exec)

Ara.T.Howard@noaa.gov writes:

>    harp:~ > cat a.rb
>    IO::popen('-') do |pipe|
>      if pipe
>        stdout = pipe.read
>        puts "parent got <#{ stdout }> from child"
>      else
>        exec 'echo', '-n', '42'
>      end
>    end
>
>    harp:~ > ruby a.rb
>    parent got <42> from child

Works, but there's a problem. If I open the pipe in read/write
mode and exec a program that reads from stdin it doesn't work :(

-- 
Lawrence
http://www.oluyede.org/blog