Joking aside, there is something to be said about doing CM with the shell.

If somebody created a list of requirements for the perfect language for doing CM it would probably be similar to:

- Always available on every machine

- Proven reliable and stable

- Built to interface with the OS and other utilities

Hmm, that sounds a lot like the shell. If your application doesn't already depend on Ruby, bringing Ruby in as a dependency, is a lot of extra overhead. There is something to be said about this concept, but it should be shell all the way down.