ac(8) on FreeBSD
The text 4c914583ed6c, as FreeBSD 7.0-RELEASE, FreeBSD 6.3-RELEASE, FreeBSD 6.2-RELEASE, FreeBSD 6.1-RELEASE, FreeBSD 6.0-RELEASE shipped it.
connect time accounting
Flags it lists
-
-d -
-p -
-t -
-w