Ruby on Rails
Welcome to the Ruby on Rails book.
If you are interested in learning more about the Ruby language, then please go to the Ruby Programming book.
Ruby on Rails, or often seen as RoR is a contemporary web framework used by many web companies such as Twitter, Hulu and Kongregate. It allows developers to easily create and maintain applications with very little effort but huge functionality.
Rails command start with "rails" and not "ruby/script".