Okay, so, how exactly does this work? I take the text, from, say, here: http://www.home.unix-ag.org/simon/woof.html

...then, paste into a file which I then save as "woof"? Or does it have to be "woof.py"? Chmod to make it executable, presumably? I already figured out how to add whatever directory I stick it in to path, just wondering if having .py matters in Linux, since by default file extensions in the file name don't actually matter to linux (As I understand it anyway.)