From: Shea Martin <null@...0>
Date: 2006-03-23T06:04:31+09:00
Subject: Re: Return code of process from IO

Farrel Lifson wrote:
> Just solved it. Just run Process.wait after the call to the IO.popen
> and $? gets updated.

This doesn't work in this case:

#!/usr/bin/ruby

Thread.new{
   IO.popen('ls non_existant_dir').each_line{|l| puts l}
   sleep 10
   Process.wait
   puts "exit status is #{$?}, should be non-zero"
}

sleep 5

Thread.new{
   IO.popen('dir').each_line{|l| puts l}
   Process.wait
   puts "exit status is #{$?}, should be 0"
}

sleep 15

exit 0


~S