From: Ralf Mueller <ralf.mueller@...>
Date: 2009-12-08T15:53:19+09:00
Subject: Re: Install ruby 1.9.1


Ruby Freak wrote:
> I spent an hour trying to find reasonable instructions on how to
> install ruby 1.9.1 as a standalone ruby instance. Everything seems to
> be directed at side-by-side 1.8/1.9 installation.
>   
Hi!
> I found this in some ad swamp, but it was sadly more appropriate than
> anything else I could find on the web that wasn't apt-get ruby.(1.8.7)
>
> ruby 1.9.1 is installed in opt/ruby but the system doesn't know about
> it.
> opt/ruby/bin/ruby -v works, but ruby -v tells me ruby isn't installed.
>
> I guess I need to put ruby in the path or create a symlink or
> something, but I am not sure what to do.
>   
Looks like, you using some kind of debian based system...for which /opt 
is made for 'foreign' software like Adobe-Reader. /opt/bin has to be 
added to the PATH-variable. Depending on which kind of shell you use, or 
if this ruby installation should be accessible  for all users, you 
should edit ~/.bashrc or ~/.zshrc (enable ruby only for you)
bashrc: PATH=/opt/bin:$PATH
zshrc: path=(/opt/bin $path)
or
/etc/profile or a single script under /etc/profile.d/ (for all  user)

It all depends on you operating system.

apt-get is quite comfortable despite of the fact, that ruby (like any 
another reasonable composed software) is debianized, i.e. hacked into 
tiny little packages. Do you need a special ruby version?

regards
ralf