title: How to stop node.js server with yarn
body: <p>I used windows-installed pc(called pc), and have a ubuntu-installed server(called server). </p>
  
  <p>I installed Visual Studio Code, and accessed to server via vscode extension aka remote development.</p>
  
  <p>and I installed node and create-react-app on server with vscode terminal.</p>
  
  <p>I typed <code>create-react-app test</code>, <code>cd test</code>, and <code>yarn start</code>.</p>
  
  <p>it's perfectly worked. but now here's the problem part.</p>
  
  <p>how can I close the server?</p>
  
  <p>ctrl-C is not worked, and <code>kill terminal</code> wasn't work too.</p>