RubyonRails installation

it's quite simple to install RoR on ubuntu.

$ apt-get install ruby1.8

go to here to get the newest gem.

$ tar zxf rubygems-1.0.1.tgz
$ cd rubygems-1.0.1/
$ sudo ruby setup.rb

install rails

$ sudo gem install rails --include-dependencies

Rails rely on lots of gems, we need install some first

$ sudo gem install actionmailer
$ sudo gem install actionpack
$ sudo gem install activerecord
$ sudo gem install activesupport
$ sudo gem install actionwebservice
$ sudo gem install rake

done