Whether or not the shell is good depends (like everything) on what you are trying to do with it. For an interactive console, I find bash (with the completion p

Whether or not the shell is good depends (like everything) on what you are trying to do with it. For an interactive console, I find bash (with the completion package and a custom prompt) better than anything I have ever used (and I keep trying to find a replacement). For programming, sh is great at matching and moving files en masse depending on a few parameters, or wrapping cron jobs, and the like. For this it is downright delicious, but for things outside its domain, it rather sucks just like any programming language.