title: why does my hadoop command does not work?
body: <p>I have my <code>hadoop cluster</code> set up with one <code>master</code> and two <code>slaves.</code>
  when I type </p>
  
  <pre><code>hadoop fs -ls 
  ls: Cannot access .: No such file or directory.
  </code></pre>
  
  <p>But when I type the following:</p>
  
  <pre><code>hadoop fs -ls /
  Found 1 items
  drwxr-xr-x   - Mike supergroup          0 2014-06-24 00:24 /usr
  </code></pre>
  
  <p>I get the same output both on master and slaves. why <code>hadoop fs -ls</code> does not work?</p>
  
  <p>Thanks!</p>