b2sum(1) on Linux
The text 02a89cf8809a, as Debian 9 (Stretch) shipped it.
compute and check BLAKE2 message digest
Flags it lists
-
--binary -
--check -
--help -
--ignore-missing -
--length -
--quiet -
--status -
--strict -
--tag -
--text -
--version -
--warn -
-b -
-c -
-l -
-t -
-w