Rbenv handles the installation and management of multiple Ruby environments. Ruby 1.9.3 is required for Octopress and using rbenv you can install it with ease.
Standard Rbenv Installation
The standard method for installing rbenv uses Git. From your terminal, run the following commands:
Zsh users: In the instructions above substitute
Note: You may need to add
source ~/.bash_profile to
~/.profile depending upon your bash configuration.
Alternate Installation Using Homebrew
If you use Homebrew on Mac OS X you may prefer to install rbenv like this:
Install Ruby 1.9.3
Next install Ruby 1.9.3 and you'll be all set.
rbenv local 1.9.3-p0 ensures that your Octopress installation is using Ruby 1.9.3-p0 without modifying your environment in any other directory. If you wish to use 1.9.3-p0 everywhere, run
rbenv global 1.9.3-p0 instead.
ruby --version to be sure you're using Ruby 1.9.3. If you're having trouble, seek help here