DVD+RW media are capable of only about 1,000 writes, so it is very useful to mount them with the noatime option to eliminate any writing to update their inodes or simply mount them read-only when it's not necessary to write to them.
It is possible to pipe data to the growisofs command:
$ sudo your_application | growisofs -Z /dev/scd0=/dev/fd/0
It is also possible to burn from an existing image (or file, named pipe, or device):
$ sudo growisofs -Z /dev/scd0=image
The dvd+rw-tools documentation, found at /usr/share/doc/dvd+rw-tools-*/index. html, is required reading before your first use of the program. We also suggest that you experiment with DVD-RW (rewritable) media first, as DVD-R (record once) media is not yet as inexpensive as CD-R media.
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