From: Clayton Wozney <clayton.wozney@...>
Date: 2004-05-06T05:48:56+09:00
Subject: Reading frin STDIN

I'm using Ruby to create little command line utilities that read from
STDIN and write to STDOUT so that I can string them together with pipes.
The I/O part looks like this...

	# open up STDIN for reading
	infile = IO.new(0, "r")

	# read from STDIN until EOF
	infile.each_line do |line|

Now, this works fine when I run it from the command line directly (no
pipe).  However, when I try to use a pipe like this (for example):

	c:\>type file.txt | ruby_script.rb

I get this error message:

	The process tried to write to a nonexistent pipe.
	ruby_script.rb:23:in `each_line': Bad file descriptor (Errno::EBADF)
        from ruby_script.rb:23

Is there another way to achieve this effect?  Thanx.

Clayton.