From: nobu.nokada@...
Date: 2002-06-14T17:40:20+09:00
Subject: Re: Exit status of IO.popen process

Hi,

At Fri, 14 Jun 2002 10:47:13 +0900,
Sean O'Dell wrote:
> How do you get the exit status of a process opened with IO.popen?
> 
> Process.waitpid seems to only return the pid of the process; the exit
> status isn't returned.

Refer $?

  IO.popen("read x;exit $x","r+"){|f|f.puts("10")}
  p $?	#=> 2560 == 10<<8

-- 
Nobu Nakada