login.krb5(8) on Linux
The text 49cd6d888bb9, as Debian 5.0 (Lenny), Debian 4.0 (Etch), Debian 3.1 (Sarge) shipped it.
kerberos enhanced login program
Flags it lists
-
-F -
-K -
-e -
-f -
-h -
-k -
-p -
-r