title: Command line for Dropbox connection in Duplicati backup
body: <p>I'm trying to backup Folders from local drive to Dropbox using Duplicati command in Command prompt. (Backup should be Incremental)</p>
  
  <pre><code>C:\Users\Desktop\Office_Works\Duplicati\Duplicati 1.3.4\Duplicati&gt;Duplicati.CommandLine.exe backup a https://www.dropbox.com/
  
  Enter passphrase: **
  Confirm passphrase: **
  **Unable to find backend for: https://www.dropbox.com/**
  </code></pre>
  
  <p>"a" is my folder in local drive. Now I want to know how to make a connection with Dropbox using command lines. Is any particular way to connect Dropbox using duplicati commands?</p>