lsof print numeric ports

Sometimes handy is:

lsof -Pi

When I tried losf -iP it gave me some trash, so make sure P goes first.

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As a side note: lsof -3.14 will provide the same trash, don't try this.

Run lsof -P.

And make sure the P goes before the i, if you combine the option with -i:

lsof -Pi

According to man lsof, -P inhibits the conversion of port numbers to port names for network files. Inhibiting the conversion may make lsof run a little faster. It is also useful when port name lookup is not working properly."