It's expanded from simply a Git cheat-sheet to a general a Ruby on Rails command line cheat-sheet.
You'll obviously find Git commands. There are also Ruby on Rails database commands, Heroku commands and whatnot. If you find something that's missing and relevant, feel free to add to it. This is a community project.
https://github.com/TimBiden/GitCommands/blob/master/Git-Commands.md
https://github.com/TimBiden/GitCommands/blob/master/Heroku%20Commands
https://github.com/TimBiden/GitCommands/blob/master/Rails%20Commands