#First run this, to get port information (with the port you want to kill) sudo lsof -i :3000 #Then run this, with <PID> replaced by the value in the column returned by previous command. kill -9 <PID>
sudo lsof -i :3000 kill -9 PID
netstat -ano | findstr :8080 taskkill /PID <yourid> /F
lsof -ti tcp:2525 | xargs kill