title: How to stop app that node.js express 'npm start'
body: <p>You build node.js app with express v4.x then start your app by <strong>npm start</strong>. My question is how to stop the app? Is there <strong>npm stop</strong>?</p>
  
  <p><strong>EDIT</strong> to include the error when implement <strong>npm stop</strong></p>
  
  <pre><code>/home/nodetest2# npm stop
  
  &gt; nodetest2@0.0.1 stop /home/nodetest2
  &gt; pkill -s SIGINT nodetest2
  
  pkill: invalid argument for option 's' -- SIGINT
  
  npm ERR! nodetest2@0.0.1 stop: `pkill -s SIGINT nodetest2`
  npm ERR! Exit status 2
  </code></pre>