Cómo evitar que se ejecute un servidor de nodo
ps aux | grep node
kill -9 PROCESS_ID
Graceful Gibbon
ps aux | grep node
kill -9 PROCESS_IDps aux | grep node
#The last record is for grep and it is not victime
#You should kill the processes who are running ".../react-scripts start"
sudo kill -9 process_idkillall nodenpm run react-scripts start