When writing a checkpoint to a CD, RAB relies on external programs, first to create the CD image file, and second to actually burn it to a CD. Usually, we will use mkisofs(8) to create an ISO9660 image, and cdrecord(1) to burn it.
Possibly, you prefer to use special options with these programs, or an entirely different program, so RAB does not call either mkisofs(8) or cdrecord(1) directly, but uses two shell script wrappers mkisofs.sh and cdrecord.sh instead. Both of these files are in the library directory used by RAB, usually /usr/local/lib/rab, and they must be executable, of course. You may edit these scripts to customize them for your system. The scripts are called as follows.
This script is called with exactly three arguments.
mkisofs.sh sourcedir imagedir imagename
This script is called with three parameters, too.
cdrecord.sh imagedir imagename device