To burn a pre-mastered image:
growisofs -Z /dev/sr0=/path/to/iso/image
To burn a directory tree:
growisofs -Z /dev/dvd -R -J /path/to/directory_tree
If you need more information, see “man growisofs” or “man mkisofs”. Or whatever Ubuntu calls its versions of the utilities; I don't remember anymore, as I haven't used Ubuntu in some time.
To burn a pre-mastered image:
growisofs -Z /dev/sr0= /path/to/ iso/image
To burn a directory tree:
growisofs -Z /dev/dvd -R -J /path/to/ directory_ tree
If you need more information, see “man growisofs” or “man mkisofs”. Or whatever Ubuntu calls its versions of the utilities; I don't remember anymore, as I haven't used Ubuntu in some time.