technically there is no legal way to rip a dvd if you are in the US. Though you can legally create your own backup. it is not legal to bypass the encryption security that is on just about all dvds to create those backups - per the dmca. That said...
believe it or not, this is one of the very few things that windows does better than linux. You will find better and easier to use ripping utilities for windows.
ripping utilities include handbrake, acidrip, dvd::rip, k9copy, thoggen, vlc and others. most of them can be found in ubuntu software manager.
Hello! I was wondering, is there a legal and free way to rip DVD's on Ubuntu 14.04? Thanks!
P.S. A non-free way is acceptable.