tcpflow(1) on Linux
The text 1644f00f2f32, as Debian 9 (Stretch) shipped it.
TCP flow recorder
Flags it lists
-
-B -
-C -
-D -
-E -
-F -
-FM -
-FX -
-Fg -
-Fk -
-Fm -
-J -
-L -
-P -
-R -
-Sname -
-V -
-X -
-Z -
-a -
-b -
-c -
-d -
-e -
-fmax_fds -
-h -
-hh -
-i -
-l -
-m -
-o -
-p -
-q -
-r -
-s -
-v -
-w