Installing Rails on OSX Mavericks

Install homebrew. You should be prompted to install the Xcode Command Line Tools.

$ ruby -e "$(curl -fsSL https://raw.github.com/mxcl/homebrew/go)"

Make sure it is setup appropriately:

$ brew doctor

You should see: Your system is ready to brew..

Setup rbenv and Ruby 2.0.0:

$ brew install rbenv
$ brew install ruby-build
$ echo 'eval "$(rbenv init -)"' >> ~/.bashrc

ZSH users use ~/.zshrc.

Install bundler and rails:

$ gem install bundler
$ gem install rails
$ rbenv rehash

You should now be good to go!

Try starting here if you're new to Rails: http://guides.rubyonrails.org/getting_started.html#hello-rails-bang