tcpdump(1) on FreeBSD
The text 70cce186f0b5, as FreeBSD 4.11-RELEASE, FreeBSD 4.10-RELEASE, FreeBSD 4.9-RELEASE, FreeBSD 4.8-RELEASE, FreeBSD 4.7-RELEASE shipped it.
dump traffic on a network
Flags it lists
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-C -
-E -
-F -
-N -
-O -
-R -
-S -
-T -
-X -
-a -
-c -
-d -
-dd -
-ddd -
-e -
-f -
-i -
-l -
-m -
-n -
-p -
-q -
-r -
-s -
-t -
-tt -
-ttt -
-tttt -
-v -
-vv -
-vvv -
-w -
-x