Recently I've been using Mac's Terminal app and I've found it quite useful to do various things. I've searched the internet for useful commands, tips and tricks, etcetera.
I'd like to know if any of you Mac users use Terminal and if you do, I'd appreciate a lot if you could leave me some useful commands that I could use. Also, if someone asks for it of course, I can leave you some interesting commands that I use
PS: I own a computer running Tiger and another one running Leopard, so commands that are exclusive to newer OS X like Snow Leopard and Lion won't work. Also, if you own Linux, I think most commands that work there also work in Macs.
EDIT: I also forgot to say that if this post doesn't belong in here, feel free to change it, I wasn't really sure where to put it.