Unix-style tools on Windows?

Try MinGW, the Minimalist GNU for Windows. Here's a list of GNU tools they offer: http://sourceforge.net/projects/mingw/files/

This includes things like bash, sed, awk, grep, cut, and other familiar GNU tools. Perl is in there as well. I find it a good light-weight alternative to Cygwin.

You want cygwin -- and secondarily, for when you absolutely have to work in a CMD.EXE console, unxutils.