proftpd(8) on Linux
The text 3762e46aaec4, as Debian 3.1 (Sarge) shipped it.
Professional configurable, secure file transfer protocol server
Flags it lists
-
--configtest -
--help -
--list -
--nodaemon -
--quiet -
--version -
-h -
-l -
-n -
-q -
-t -
-v