tcpdump(1) on macOS
The text 6c405f6558b1, as OS X 10.11.6, OS X 10.11.5, OS X 10.11.4, OS X 10.11.3, OS X 10.11.2, OS X 10.11.1, OS X 10.11 shipped it.
dump traffic on a network
Flags it lists
-
-# -
--absolute-tcp-sequence-numbers -
--buffer-size -
--dont-verify-checksums -
--help -
--immediate-mode -
--interface -
--linktype -
--list-data-link-types -
--list-interfaces -
--list-time-stamp-types -
--monitor-mode -
--no-optimize -
--no-promiscuous-mode -
--number -
--packet-buffered -
--relinquish-privileges -
--snapshot-length -
--time-stamp-type -
--version -
-A -
-D -
-E -
-H -
-I -
-J -
-K -
-L -
-N -
-O -
-P -
-Q -
-R -
-S -
-U -
-W -
-X -
-XX -
-b -
-d -
-dd -
-ddd -
-e -
-f -
-g -
-h -
-k -
-l -
-n -
-p -
-q -
-t -
-tt -
-ttt -
-tttt -
-ttttt -
-u -
-v -
-vv -
-vvv -
-x -
-xx