stop nodemon code example
Example 1: stop port
kill -9 $(sudo lsof -t -i:'portName')
//Ex. if portname is 3000
//then we will execute "kill -9 $(sudo lsof -t -i:3000)"
Example 2: stop npm server cmd
ps 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_id