From: botp <botpena@...>
Date: 2010-11-29T21:36:35+09:00
Subject: Re: why i can't find my ruby ?

On Mon, Nov 29, 2010 at 8:04 PM, Pen Ttt <myocean135@yahoo.cn> wrote:
> when i installed ruby,
> pt@pt:~$ ruby -v
> ruby 1.9.2p0 (2010-08-18 revision 29036) [i686-linux]
> pt@pt:~$ irb
> The program 'irb' can be found in the following packages:
>  * ruby
>  * irb
> Try: sudo apt-get install <selected package>
> what's wrong?

you only created a link for ruby & gem.
you need to create a link for irb too.

best regards -botp