Mount ISO images as physical devices

Here is a great how-to with mounting ISO images as though they were a physical device like a CD-ROM or DVD drive:

http://www.cyberciti.biz/tips/how-to-mount-iso-image-under-linux.html

Writing ISO files from the commandline

Maybe you want to rip a data CD or DVD into an ISO formatted file. Here is how to do it from the command line:

$wodim -v dev=<device> [speed] <trackName.iso>

For example:

$wodim -v dev=/dev/scd0 speed=4 puppy-3.01-seamonkey.iso