do_auth(8) on Linux
The text c9131ea3ff30, as Debian 10 (Buster), Debian 9 (Stretch), Debian 8 (Jessie), Debian 7 (Wheezy), Debian 6.0 (Squeeze) shipped it. The page shows this text now.
Program allowing more granular control than tac_plus.
Flags it lists
-
-D -
-d -
-f -
-i -
-l -
-u