C.6 netstat Program
We have used the netstat program many
times throughout the text. This program serves multiple
purposes:
-
It shows the status of networking endpoints. We
showed this in Section 5.6, when
we followed the status of our endpoint as we started our client and
server.
-
It shows the multicast groups that a host
belongs to on each interface. The -ia flags are the normal
way to show this, or the -g flag under Solaris 2.x.
-
It shows the per-protocol statistics with the
-s option. We showed this in Section 8.13,
when looking at the lack of flow control with UDP.
-
It displays the routing table with the
-r option and the interface information with the
-i option. We showed this in Section 1.9, where
we used netstat to discover the topology of our
network.
There are other uses of netstat and
most vendors have added their own features. Check the man page on
your system.
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