address already in use in node js code example

Example 1: Error: listen EADDRINUSE: address already in use :::3000

sudo lsof -i :3000

Example 2: address already in use

# To see ports in use
sudo lsof -i -P -n | grep LISTEN 
sudo netstat -tulpn | grep LISTEN

Example 3: 'EADDRINUSE'

sudo lsof -i :3000
kill -9 {PID}