nc(1) on Linux
The text 7616091c3f51, as Debian 3.0 (Woody) shipped it.
TCP/IP swiss army knife
Flags it lists
-
-G -
-b -
-e -
-g -
-h -
-i -
-l -
-n -
-o -
-p -
-q -
-r -
-s -
-t -
-u -
-v -
-w -
-z