From: John Joyce <dangerwillrobinsondanger@...>
Date: 2007-06-16T01:48:24+09:00
Subject: Re: wite an integer to file as binary

This one is always a stumper.
use the method to_s(2)
5.to_s(2)
Converts 5 to base 2 (binary) as a string.
This is fine for output to a file!

Alternatively, if you're looking to set binary write mode for Windows  
(versus text mode. this is windows only)
there is binmode