tcpdump(1) on FreeBSD
The text 6302daae07c1, as FreeBSD 6.3-RELEASE, FreeBSD 6.2-RELEASE shipped it.
dump traffic on a network
Flags it lists
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-d -
-dd -
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-e -
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-r -
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-t -
-tt -
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-v -
-vv -
-vvv -
-w -
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-y