From: Brian Candler <b.candler@...>
Date: 2010-04-07T20:30:31+09:00
Subject: Re: Ruby uninstall and fresh install

Shreyas Satish wrote:
> when we try "which ruby" it points to /usr/local.

In some shells, "rehash" will do what you want, but otherwise just 
logout and login again.

> and also any idea how we can uninstall ruby from /usr/local.

Just remove the files. For example, use

  ls -lrt /usr/local/bin

to see which files were installed in that directory with the same 
timestamp and are probably parts of ruby, then delete them: e.g.

rm /usr/local/bin/{ruby,erb,irb,testrb}

Then check under the rest of /usr/local:

  ls -lrtR /usr/local

Probably you will need:

rm -rf /usr/local/lib/ruby

rm -rf /usr/local/lib/libruby*

Maybe a few stragglers in /usr/local/man, /usr/local/share/doc etc
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