I need some help to get this job done.
I want to backup a 3TB USB drive to another 3TB USB drive and then do a regular backup each night.
I have looked at using Time Machine but this appears to back up all files on the system - not just the USB drive.
If I was doing this on Linux I would just use rsync and a cronjob. Is there an Apple equivalent and if so where would I find the terminal app on the Apple? I really have very limited knowledge of Apple.
Or can it be done with Time Machine?