md5sum.textutils(1) on Linux
The text 8c5b7eb3d40e, as Debian 4.0 (Etch) shipped it.
compute and check MD5 message digest
Flags it lists
-
--binary -
--check -
--help -
--status -
--text -
--version -
--warn -
-b -
-c -
-t -
-w