From: Jonathan Hudson <jh_ruby-lang@...>
Date: 2009-02-03T03:12:01+09:00
Subject: Re: How to tell if one is running 32 or 64 bit Ruby on Mac OS X?

On Tue, 3 Feb 2009 02:45:00 +0900, Wes Gamble wrote:

> Can't really tell from this.  Does anyone know definitively if Mac OS X
> is still shipping with a 32 - bit version of Ruby or if there is a way
> to check?
> 

$ irb
['foo'].pack('p').size

8 on 64bit, 4 on 32bit. At least on Linux (and hopefully everywhere).

-jh