sha1sum(1) on Linux
The text 6b01d271d135, as Debian 11 (Bullseye) shipped it.
compute and check SHA1 message digest
Flags it lists
-
--binary -
--check -
--help -
--ignore-missing -
--quiet -
--status -
--strict -
--tag -
--text -
--version -
--warn -
--zero -
-b -
-c -
-t -
-w -
-z