ping(8) on OpenBSD
The text 40ad8af1d7c8, as OpenBSD 4.3, OpenBSD 4.2 shipped it.
send ICMP ECHO_REQUEST packets to network hosts
Flags it lists
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-D -
-I -
-L -
-R -
-T -
-c -
-d -
-f -
-i -
-l -
-n -
-p -
-q -
-r -
-s -
-t -
-v -
-w