From: "Iñaki Baz Castillo" <ibc@...>
Date: 2010-01-16T08:30:07+09:00
Subject: How to know if $stderr is reopened to /dev/null

Hi, how could I know if $stderr has been redirected to /dev/null?
This is, imagine a program does:

  $stderr.reopen "/dev/null"

And later I want to check if it's redirected to /dev/null or not.

I've found a method which could work:

  irb $stderr.inspect
  "#<IO:/dev/null>"

So I could parse the resulting string. However it doesn't seem a very "cool" 
approach. Is there any there any other more ellegant way?

Thanks a lot.

-- 
Iñaki Baz Castillo <ibc@aliax.net>