knocker(1) on Linux
The text b45a92883713, as Debian 9 (Stretch), Debian 8 (Jessie), Debian 7 (Wheezy), Debian 6.0 (Squeeze), Debian 5.0 (Lenny), Debian 4.0 (Etch), Debian 3.1 (Sarge) shipped it.
An easy to use network security port scanner
Flags it lists
-
--configure -
--end-port -
--help -
--host -
--last-host -
--last-scan -
--logfile -
--no-colors -
--no-fency -
--port -
--quiet -
--start-port -
--version -
-EP -
-H -
-P -
-SP -
-h -
-lf -
-nc -
-nf -
-q -
-v