I am working on a backup process for my wife's business. The problem we kee facing is, "Did we back this up?" and "We don't need to back everything up..." Part of this process I am working on is to insure that nothing goes missing... This command helps to make sure of this..
diff -q --exclude="Fantom" /Users/myusername/directory/ /Volumes/backup/ | grep "Only in" | grep "myusername" > out.txt