It looks like cksum prints a different error message when using the -z option
$ gnu_cksum /dev/null > /dev/full -z
cksum: write error: No space left on device
$ gnu_cksum /dev/null > /dev/full
cksum: write error # Detail is missing
Found while fixing a similar issue on rust uutils
It looks like cksum prints a different error message when using the
-zoptionFound while fixing a similar issue on rust uutils