Changes

All the 'ports' installation operations require superuser access, also known as root access, also known as an admin account. If you don't have this on your Mac, you have to ask an admin account holder to change your account settings, with system preferences - accounts from the Apple menu in the top left of the menu bar. To check to see if you are an admin account holder, open a terminal window (with applications - utility - terminal) and type 'sudo ls'. A directory listing means you have an admin account. A grumpy error message means you do not.