Access a DVD via the shell without knowing it's name

Question

I'm trying to write a simple shell script that will access a folder on the current DVD, without knowing the name of the DVD.
I would like to access via /Volumes/DVD, but that doesn't exist. Instead, when a DVD is inserted, it is mounted with it's name (ie: /Volumes/MyDVDMovie).
Is there a simple way of doing this?

Answer 1

I've not seen any particularly elegant answer to this before but the necessary information is out there. First, the CDROM drive on YOUR system will have a particular device name starting with perhaps /dev/disk1 as it is on my system. Using the command df with a known CDROM in your drive will help you know which it is. Everything after /dev/disk? will vary depending on the CDROM contents.
The following script, albeit not elegant will set CDPATH to the volume of the CD. I used a CD with spaces in the name to test as CDROMs and DVDs often have spaces.
#!/bin/bash
CDPATH=`df -h |grep /dev/disk1 |
awk '{
for (i=6 ; i<=NF; i++)
if (i == NF)
printf("%s", $i)
else \
printf("%s ", $i)
}'`
echo The CDROM Volume path is \"$CDPATH\"
Results on my system:
The CDROM Volume path is "/Volumes/Plants vs. Zombies"
Do note that this script is specific to your system (due to the CDROM device path) unless you locate a source to determine which device represents the cdrom.