I think this is pretty cool. I've wondered what a ruby shell would look like. I don't "get" bash at all, but I find ruby very natural. I've gotten better at writing bash one-liners for basic sysadmin tasks, however anything more complicated is hopeless. I've found it easier to write chef scripts to automate any server task than using bash.

The ability to easily execute commands on several remote servers is really appealing. At work, I only need to be able to ssh to 5 different servers and I frequently don't have a free screen terminal.