This just a thanks for having this site. Anytime I think "I know how to do this in Unix but how do I do it in Windows?" or "I know how to do this in Windows but how do I do it Unix?" I come here.
I've done many things with a *.sh and *.bat files over the years and this site is essential for figuring out just which command to use.
I'd like to second that. This is a great reference site.