To describe the setup process on my Mac OS 10.8.

Referenced from http://octopress.org/docs/setup/

1. Download Octopress

   git clone git://github.com/imathis/octopress.git octopress

2. Install ruby 1.9.3. (Note that only ruby 1.9.3, NOT 1.9.3 or above)

   brew install rbenv

   brew install ruby-build

   rbenv install 1.9.3-p0

   rbenv rehash

3. Modify content of .ruby-version file in octopress to “1.9.3-p0”. Run “ruby —version” should report “Ruby 1.9.3-p0”

4. Final setup commands

   gem install bundler

   rbenv rehash

   bundle install

   rake install