address already in use npm code example

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

sudo lsof -i :3000

Example 2: npm port already in use

$ lsof -i tcp:3000
$ kill -9 PID

Example 3: address already in use

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

Example 4: Uncaught Error: listen EADDRINUSE: address already in use 0.0.0.0:3000

C:\Users\admin>netstat -ano|findstr "PID :3000"

taskkill /pid 18264 /f