Linux: Check Which Port Number a Process is Listening on

Linux: Check Which Port Number a Process is Listening on

October 27, 2020

$ sudo ss -ltnp

l: display only listening sockets
t: display tcp connection
n: display addresses in a numerical form
p: display process ID/ Program name

$ sudo lsof -i :80

This command will list all processes using TCP port number 80.

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