From: nobu.nokada@...
Date: 2005-05-29T13:49:45+09:00
Subject: Re: IO with external program

Hi,

At Sun, 29 May 2005 06:14:04 +0900,
Danny Beaudoin wrote in [ruby-talk:143900]:
> I would like to run a program from ruby and be able to give it its input and
> receive the output. This program usually uses stdin and stdout. How may I
> achieve this?

  cmd = IO.popen("program arg1 arg2", "r+")
  cmd.puts(data)
  cmd.close_write
  result = cmd.read

close_write might be unnecessary depending on the program, if it
doesn't wait EOF of stdin.

-- 
Nobu Nakada