title: failed to create symbolic link: File exists
body: <p>I am installing Maven 3, but after I create the symbolic link by:</p>
  
  <pre><code>sudo ln -s /usr/local/apache-maven-3.0.5/bin/mvn /usr/bin/mvn
  </code></pre>
  
  <p>then I type:</p>
  
  <pre><code>mvn -version
  </code></pre>
  
  <p>But it returns:</p>
  
  <pre><code>bash: /usr/bin/mvn: No such file or directory
  </code></pre>
  
  <p>When I go back to <code>/usr/bin/mvn</code> I can see the file is there, but why it is not working?</p>