sudo lsof -PiTCP -sTCP:LISTEN
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
GitHub 850 grgarside 6u IPv4 0x23c345381d089301 0t0 TCP localhost:25035 (LISTEN)
lsof -i -P | grep -i "listen"
sudo lsof -PiTCP -sTCP:LISTEN
$ npx kill-port 3000 8080 8081
Process on port 3000 killed
Process on port 8080 killed
Process on port 8081 killed
sudo lsof -i -n -P | grep TCP