grml-live is a buildsystem for generating a grml and Debian based Linux live system (CD/ISO). It’s based on FAI (I mentioned FAI a few days ago already) because its class concept provides a flexible infrastructure for building custom systems. grml-live uses squashfs-tools for building a compressed file (so you can get >2GB on a 700MB ISO) containing the chroot system.
As soon as you’ve a working build environment a grml-live command line might look as simple as:
# grml-live -s sid -a i386 -c GRMLBASE,GRML_MEDIUM,I386
Check out the webpage of grml-live for further usage examples and documentation.