xxh64sum(1) on Linux
The text e9f524f8acd9, as Debian 10 (Buster) shipped it.
print or check xxHash non-cryptographic checksums
Flags it lists
-
--check -
--help -
--little-endian -
--quiet -
--status -
--strict -
--version -
--warn -
-B -
-H -
-V -
-b -
-c -
-h -
-i -
-w