Ok. This post is definitely a bit geeky. I'll present you three (and a half) tips for working with the command line on Mac OS X.
I love Mac OS X for two things. At first it has an easy to use interface that's overstuffed with useless eye-candy. Secondly – contrary to Windows – it features an underlaying mature FreeBSD-like kernel and all the standard tools like ssh, grep and Perl.