Read the title from a DVD?

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http://unix.stackexchange.com – I've noticed that each DVD image has a semi-unique uppercase name. Is there a standardized way for me to simply read this name as a non-root user in Linux? I'm on an Ubuntu 12.04 derivative running kernel 3.7. I'd like to simply get the name of any disk currently in the drive like so: DVD_NAME="$( ./read-dvd-name.sh )" (HowTos)