Cool! command reference (Score 1)

I saw this website for a book that I guess took a group of computer guys almost 3 years to write. It looks pretty amazing to me. The book claims to have every UNIX and Linux command in existance and cross-references. I checked out the samples and I think I will order it soon. The website for the book is http://www.allcommands.com. Check it out and let me know what you think