Re: How do I find out who's using port # xxxxx

[Mark W. Eichin]

You can *also* do this with lsof:
% sudo lsof -i tcp:25
COMMAND  PID USER   FD   TYPE     DEVICE SIZE/OFF INODE NAME
sendmail 239 root    4u  inet 0x005bc810      0t0   TCP *:smtp (LISTEN)
% 

using -i  tcp:smtp  works as well, "lsof -i :domain" is an example of
finding either...


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