title: SSH.NET passwd not executing
body: <p>I can't seem to make this library to work.
  I'm doing something pretty straightforward but still I can't manage to do it.</p>
  
  <pre><code>            client.Connect();
              client.RunCommand("sudo passwd test");
              Thread.Sleep(1000);
              client.RunCommand("testtest");
              Thread.Sleep(1000);
              client.RunCommand("12345");
              Thread.Sleep(1000);
              client.RunCommand("12345");
              bool primera = true;
              client.Disconnect();
  </code></pre>
  
  <p>If I try then to login with test using the credentials just posted it fails. But if I do the same commands through normal SSH through my terminal I can log in.
  Why SSH.NET is not executing those commands?</p>