cdrecord

Create an ISO Filesystem

mkisofs -o backup.iso -x /home/joeuser/junk/ -J -R -A -V -v /home/joeuser/

-o Specifies an output file name of the ISO image.
-J Generates Joliet naming records; for Windows environments.
-R Generates Rock Ridge (RR) naming records
-A Sets an Application ID
-V Sets a Volume ID
-v Sets verbose execution
-x Excludes any directory

Check for scsi device

  cdrecord -scanbus

Burn disk

  cdrecord -v -eject speed=4 dev=0,3,0 backup.iso

Blank CD-RW

  cdrecord --dev=0,3,0 --blank=fast

http://www.redhat.com/docs/manuals/linux/RHL-9-Manual/getting-started-guide/s1-disks-cdrw.html