`ss`

3 commands

Check if a port is listening
```
ss -ltn src :8080
```
Shows the TCP socket listening on the local port, or nothing if no process listens there.
tab next value · ↵ copy · o open · f favorite
List listening ports with their process
```
sudo ss -tulpn
```
Shows every TCP and UDP socket waiting for connections, with numeric ports and the process that owns it.
- network
- ports
tab next value · ↵ copy · o open · f favorite
Show connections on a local port
```
ss -tn src :443
```
Lists TCP connections whose local side uses the port, with numeric addresses.
- network
- ports
tab next value · ↵ copy · o open · f favorite