title: couldn't connect to server 127.0.0.1 shell/mongo.js
body: <p>when i setup mongodb in my ubuntu , i try : ./mongo it show this error :</p>
  
  <pre><code> couldn't connect to server 127.0.0.1 shell/mongo.js
  </code></pre>
  
  <p>so what can i do ,</p>
  
  <p>thanks</p>