md5sum.textutils(1) on Linux
The text 6f79f7d9ecac, as Debian 7 (Wheezy) shipped it.
compute and check MD5 message digest
Flags it lists
-
--binary -
--check -
--help -
--quiet -
--status -
--strict -
--text -
--version -
--warn -
-b -
-c -
-t -
-w