It is easy to burn a DVD-R/DVD-RW/CD-R from the command line in Linux. Just insert your blank disc and run this command. If you do not have wodim installed your might have to install cdrkit.
wodim -v -sao dev=/dev/srX filename.iso
- -v is to make the out verbose offering you more information if something goes wrong.
- -sao sets burning to session at once
- dev=/dev/srX selects the drive that will be used to burn the disc. You will need to change srX to whatever the device you are using is.
- filename.iso is the filename of the image you want to burn.