What would really make the shell a lot better is a couple of things:

- Wildcards/globbing, would also be nice for Grayscript.
- Pipes and redirection (I really miss grep, or the possibility to create a functional equivalent in Grayscript)
- Stdin/stdout/stderr for Greyscript (ties in with pipes and redirection)
- Some sort of readline-like functionality available for Greyscript for nicer command line interfaces.

I hope this isn't too hard to implement. I really like the game so far, but this is functionality that would make living in the terminal a lot more bearable.