port 3000 already in use code example

Example 1: port 8080 already in use

netstat -ano | findstr 8080

Example 2: Port 3000 is already in use, but when I try to kill nothing is found

netstat -ano | findstr :3000
taskkill /PID "123" /F

Example 3: port 8080 already in use

taskkill /F /pid 1088

Example 4: stop npm running on port 3000

netstat -ano | findstr :3000
taskkill /F /PID PID_of_port