title: How can I see the underlying Hadoop file system from Spark
body: <p>I have started Spark like this:</p>
  
  <pre><code>spark-shell --master local[10]
  </code></pre>
  
  <p>I'm trying to see the files on the underlying Hadoop installation.</p>
  
  <p>I want to do something like this:</p>
  
  <pre><code>hdfs ls
  </code></pre>
  
  <p>How can I do it?</p>