From: gotoken@...
Date: 2002-01-10T07:14:03+09:00
Subject: Re: IO.popen not the same as Open3.popen3 ??

In message "IO.popen not the same as Open3.popen3 ??"
    on Thu, 10 Jan 2002 06:27:25 +0900,
    Jim Freeze <jfreeze@freebsdportal.com> writes:

> I can't seem to get Open3.popen3 to work the same
> as IO.popen, ie, I can't get it to accept a command
> with commandline arguments.

Open3::popen3(*cmd) doesn't take read/write mode option because that
invokes `exec(*cmd)'.  If you would like to know more details, it is
not bad idea to read open3.rb .  open3.rb is relatively short and uses
standard technics.

Btw, the behavior of Kernel::exec() is complex a little.  See also
http://www.rubycentral.com/book/ref_m_kernel.html#Kernel.exec

Hope this helps, 

-- Gotoken