format-udf
                                
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                        Test with udftools 1.2+; Evaluate udfclient
Debian stable still uses 1.0.0b3-14.3, but Ubuntu has picked up 1.2-1build1 as of Yakkety.
It would be good to test format-udf.sh with udftools 1.2 per @pali here.
Also, test with new udfclient Ubuntu package. udfclient may be a suitable replacement, especially if it successfully implements an fsck.
I've seen udfclient link at www.13thmonkey.org/udfclient , however the website appears to no longer be hosted and domain is set to expire next week.. With Arch Linux the package is in the AUR and it sources it from the website directly, so replacing it to be used as a requirement could make it difficult for some to use.
udftools on the other hand via pali's repo seems to still be maintained and live in a location that is less fragile to udfclients.. There is a PR WIP for udftools fsck(last activity was in july).
I'm in contact with maintainer of udfclient and he promised to extend his domain.
If you are looking for udfclient source code, you can download them from the debian archive: https://packages.debian.org/source/sid/udfclient
Now udfclient website is back.