I tried installing Ruby and Rails on Ubuntu 5.10 (Breezy), I followed exactly what was written in the article: http://fo64.com/articles/2005/10/20/rails-on-breezy
But I ran into trouble with Rails after the installation, Rails said: “Rails does not work with Ruby version 1.8.3”.
After some search and a friend’s help, it appears that you have to do the following BEFORE you follow what’s in the article: download your architecture-specific packages from:
http://packages.ubuntu.com/dapper/interpreters/ruby1.8
Then 1
dpkg -i
Finally 1
apt-get install rails
Now you have Ruby 1.8.4 on Ubuntu.
Enjoy!