Port to PID
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Jump to navigationJump to searchUse the `lsof` command to find which process is listening on a given port.
For example, I saw that some process was already using port 69 (normally TFTP). I did not expect this port to be in use, so I ran the following command to find out which process what listening on port 69:
lsof -i :69
So to find which process is listening on port 80 (expect some http server):
lsof -i :80
You can also look for files opened by a given user or command:
lsof -u USER
lsof -c COMMAND