Besides that this is a very cool little tool I think it's also notable for being written in MRuby. MRuby is a dialect or Ruby designed for embedded devices, but can be used for system tools as well. The biggest difference is that MRuby is compiled, so you end up with a static binary like this project.

The language is still the dynamic dispatching dream that is Ruby, so it might not be the fastest language, but it is a nice alternative for Go for system tools.