How to use dd to copy DVD

[borgward]

How do I use dd to copy DVD?

[amauk]

Assuming your DVD device (input file) is /dev/sr0
and your output file is /home/username/dvd.iso

dd if=/dev/sr0 of=/home/username/dvd.iso

Just FYI
dd (data dump) will just copy something bit-for-bit
So if the DVDs encrypted or anything, the copy will be too