If you've got a Mac and you want to know how to use adb in OSX, look no further as XDA forum member siedkins has written a comprehensive guide for all Mac beginners out there, including specifically how to update your PATH environment variable.

The forum member himself has just started using OSX, after getting very fed up  with Windows and the need for all the drivers. As all rooters and flashers know, being able to use the Android Debug Bridge is very useful, but of course you'll need to know how to set it all up first.

To run natively in OSX, you'll need a USB cable, Android SDK for OSX and of course your Mac!

For the detailed guide, head on over to the forum thread.