From: Phillip Gawlowski <cmdjackryan@...>
Date: 2011-05-27T22:45:03+09:00
Subject: Re: Ruby Version 1.8.7 on Ubuntu

On Fri, May 27, 2011 at 3:25 PM, Agent Mulder <mbmulder@online.nl> wrote:
> I installed ruby from Ubuntu a week ago but it seems that I have version
> 1.8:
>
> $ruby --version
> ruby 1.8.7 (2010-08-16 patchlevel 302) [i686-linux]
>
> The book 'Ruby Programming Language' I am studying (very good :) is from
> 2008 and talks about 1.9 (versus 1.8). Do I need to re-install?

http://www.lmgtfy.com/?q=ubuntu+ruby+1.9

In case this gets lost in the plethora of links for this issue (and
you don't use RVM): Substitute the book's use of ruby and irb with
ruby19 / irb19.

-- 
Phillip Gawlowski

A method of solution is perfect if we can forsee from the start,
and even prove, that following that method we shall attain our aim.
               -- Leibnitz