I don't feel very smart right now and I need help.
I have a command-line tool (PVRTexTool) that I want to install in some magic Mac directory, such that when I open the Terminal window and type "PV<tab>", the Mac will magically divine that I mean "PVRTexTool" and will run it from the appropriate place. Where do I copy the tool? Another way to ask the same thing, where on earth does Mac look for its supported list of commands?