When someone says \"edit your .plist file\" or \"your .profile\" or \".bash_profile\" etc, this just confuses me. I have no idea where these files are, how to create them if
Unfortunately none of these answers solved the specific problem I had.
Here's a simple solution without having to mess with bash. In my case, it was getting gradle to work (for Android Studio).
Btw, These steps relate to OSX (Mountain Lion 10.8.5)
Run the following command:
sudo nano /etc/paths (or sudo vim /etc/paths for vim)

Open a new terminal window then type:
echo $PATH
You should see the new path appended to the end of the PATH
I got these details from this post:
http://architectryan.com/2012/10/02/add-to-the-path-on-mac-os-x-mountain-lion/#.UkED3rxPp3Q
I hope that can help someone else