On Tue, Dec 3, 2013 at 6:48 AM, Previn Lin <lists / ruby-forum.com> wrote:

> Thanks for so detailed guide, many thanks.

YWC

> By the way, is there something mis-writing? When I run the test.rb you
> gave, it reports error below, I'm still checking why?
>
> test.rb:3:in `popen': can't convert Array into String (TypeError)

You probably have an old version of Ruby.  I tested with 1.9.3

Cheers

robert

-- 
remember.guy do |as, often| as.you_can - without end
http://blog.rubybestpractices.com/