Installing Ruby on Rails on Ubuntu 10.04

Open a console and install it with the following command.

sudo apt-get install ruby-full build-essential

To install gem:
mkdir gems
cd gems
wget http://rubyforge.org/frs/download.php/70696/rubygems-1.3.7.tgz
tar -xf rubygems-1.3.7.tgz
cd rubygems-1.3.7
sudo ruby setup.rb

The ruby setup script doesn’t automatically place a link to the gems application in your /usr/bin folder so add it now.

sudo ln -s /usr/bin/gem1.8 /usr/bin/gem

To install older version of rails

gem install rails --version 2.1.2
gem install rails --version 2.2.2
gem install rails --version 2.3.2
gem install rails --version 2.3.3
gem install rails --version 2.3.4
gem install rails --version 2.3.5

If you want latest version
gem install rails


To install mysql

apt-get install mysql-server libmysqlclient16 libmysqlclient16-dev mysql-client mysql-common
gem install mysql