Aug 02 2009
OS X process ID and open ports
I had a need to identify what process ID (PID) on my MacBook running OSX that had a specific IP address and port open so that I could kill it. It took me a while to figure this out but eventually I found something that worked. “-P” stops lsof from translating port number to names e.g. 80 to http.
lsof -i -P
This will show you
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME Microsoft 280 someuser 15u IPv4 0x8862e64 0t0 TCP *:3546 (LISTEN) ...
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