sha224sum(1) on Linux
The text 87239976f313, as Debian 8 (Jessie) shipped it.
compute and check SHA224 message digest
Flags it lists
-
--binary -
--check -
--help -
--quiet -
--status -
--strict -
--tag -
--text -
--version -
--warn -
-b -
-c -
-t -
-w