this is my first mac programming post, yay! I am very interested in learning about UNIX commands in the terminal to accomplish tasks, like learning how to turn the safari debug menu on, thanks to macosxhints.com. I have a book, which is misplaced, unix for mac os x from o'reily. so, I know basic stuff, but am looking for a little more out of my 'core' experience'. I am looking for good online resources that even beginners can understand, but will get into more difficult ideas then running through the file tree and copy/paste.