ing

https://github.com/ericgj/ing

An alternative to Rake and Thor, Ing has a command-line syntax similar to Thor's, and it incorporates Thor's (Rails') generator methods and shell conventions. But unlike Thor or Rake, it does not define its own DSL. Your tasks correspond to plain ruby classes and methods. Ing just handles routing from the command line to them, and setting options. Your classes (or even Procs) do the rest.