Stop laravel server with command line interface
You can kill the port
sudo kill $(sudo lsof -t -i:port_number)
Like if it is running on 8000, you can do below
sudo kill $(sudo lsof -t -i:8000)
If above not worked (because frozen or unresponsive process may not respond), add parameter -9
to kill command like this:
sudo kill -9 $(sudo lsof -t -i:8000)
Easier and you can view all processes about artisan :)
ps aux | grep artisan
# get the PID from the list
kill <PID NUMBER>