From: Jeff Putsch <putsch@...>
Date: 2002-08-23T23:48:09+09:00
Subject: Re: Why  does this hang?

Much thanks to Nobu for his explanation and his correction of my sample code.
I'm no longer stuck and understand not only how to do this, but why!

Jeff.

On Fri, Aug 23, 2002 at 11:32:46AM +0900, nobu.nokada@softhome.net wrote:
> IO#eof? tries to read next data to examin EOF reached.  Use
> select before eof?.
> 
>   def run_command
>     stdin, out, err =  Open3.popen3("cat /etc/ifhp.conf")
> 
>     select_on = [out, err]
>     while !select_on.empty? and r = select(select_on)
>       p r
> 
>       r[0].each {|fh|
>         if fh.eof?
>           select_on.delete(fh)
>           next
>         elsif fh == out
>           puts "out: #{fh.gets.to_s}"
>         elsif fh == err
>           puts "err: #{fh.gets.to_s}"
>         end
>       }
>       $stdout.flush
>     end
>   end
-- 
Jeff Putsch                       Email: putsch@mxim.com
Maxim Integrated Products        Office: (503)547-2037
High Frequency CAD Engineering