A basic REPL as part of the command line interface projects.

[W3NDO]

It would ideally accept arguments on start up, but also have a small subset of commands that it responds to. I thought it was a simple thing to do until I tried building one.

[brettchalupa]

Great idea, thanks for the suggestion! I dig it! Certainly sounds challenging but fun. 😄

[W3NDO]

Also a great way to practice use of the OptionsParser in Ruby or Elixir.