tcpdump(1) on FreeBSD
The text e095f75eddbb, as FreeBSD 3.5.1-RELEASE, FreeBSD 3.5-RELEASE, FreeBSD 3.4-RELEASE, FreeBSD 3.3-RELEASE, FreeBSD 3.2-RELEASE, FreeBSD 3.1-RELEASE, FreeBSD 2.2.9-RELEASE shipped it.
dump traffic on a network
Flags it lists
-
-F -
-N -
-O -
-S -
-T -
-a -
-c -
-d -
-dd -
-ddd -
-e -
-f -
-i -
-l -
-n -
-p -
-q -
-r -
-s -
-t -
-tt -
-v -
-vv -
-w -
-x