I geek out on command lines. *nix style in particular and find them to be quite useful. However I fall out of practise and hate banging my head on something I already know just have grown rusty on. At the time being I only have one computer which I can't set up to dual boot.
Running Windows XP.
I'm hoping there's something out there that will include all the GNU tools and *nix style commands (grep, ls...) that can be thrown over the shell in XP? Also something that may at least display and allow navigation of the file structure similar to BSD style.