npm stop server code example
Example 1: redis server stop
$ redis-cli shutdown
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
Example 3: npm stop react app
taskkill -F -IM node.exe
Example 4: stop npm server
npm run react-scripts start