[senex]

Hey johnrob, that's a good question. Showoff is currently implemented in three parts: a Ruby client that's essentially a lightweight wrapper around SSH, a custom unix shell implemented in Node.js, and a server written in Node.js.

When a client connects to the showoff server, the custom shell is started. It only supports a showoff-specific API, so there's no way to execute arbitrary commands. It's similar in spirit to custom git shells like gitosis.