In a bid to find sass, seeing as I cannot call it from command line, I have gem install sass and followed this StackOverflow answer.
> rails c Loading development environment (Rails 3.2.11) 1.9.3p362 :001 > throw test
Loading that creates a new Ruby folder in my directory and tada! i found sass-3.3.3 sitting pretty in a gems folder.
Will dig through this sass folder and see what I find!