fork

MinGW doesn't support forking

I realized a while back that I learn a new language best when I work on an actual program on it, as opposed to just following tutorials and reading books. So, I decided to look around for a fun program to write in order to learn rust. Back in college, as part of a network programming class, I was tasked with writing a rudimentary shell, and I can remember how much fun it was, so I decided to write a basic shell in rust.