From: Aldric Giacomoni <aldric@...>
Date: 2009-12-29T23:11:38+09:00
Subject: Re: A Ruby appliance: What would you include?

David Masover wrote:
> On Tuesday 29 December 2009 07:25:13 am Aldric Giacomoni wrote:
>> I suggest Gentoo: it has a tool
>> available to switch painlessly between Ruby 1.8 and 1.9, which allows
>> for any and all setup on editors and such to be simple and just link to
>> #!/usr/bin/ruby ... For instance.
> 
> That would imply you can't have both 1.8 and 1.9 programs running
> simultaneously. Ubuntu installs 1.9 as /usr/bin/ruby1.9.
> 
> Also, most programs that are actually meant to run standalone will have
> #!/usr/bin/env ruby, which means you can simply change your path to 
> switch
> interpreters.

Actually, you can, but you have to explicitly choose. I don't recall off 
the top of my head, as I haven't looked in quite a while, but I believe 
that Gentoo installs /usr/bin/ruby18 and /usr/bin/ruby19 (as well as 
gem18 and gem19), and just toggles the /usr/bin/ruby symlink.
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