rubby-gem 1.3.7 설치( Ubuntu 10.4)

$ sudo su
$ apt-get install build-essential
$ apt-get install ruby rdoc libopenssl-ruby
$ wget http://production.cf.rubygems.org/rubygems/rubygems-1.3.7.tgz
$ tar zxvf rubygems-1.3.7.tgz
$ cd rubygems-1.3.7
$ ruby setup.rb
$ ln -s /usr/bin/gem1.8 /usr/local/bin/gem
$ gem install rails

Installing MySQL gem:

$ apt-get install ruby-dev libmysql-ruby libmysqlclient-dev
$ gem install mysql

참고: http://castilho.biz/blog/2010/05/08/how-to-install-ruby-on-rails-on-ubuntu-10-04-lucid-lynx/