title: Calling s3cmd with django-celery
body: <p>I have these lines within a django application. They run fine under normal conditions, but when I call them as a celery task nothing seems to happen. I can't even find an error reported. Could anyone suggest where I could be going wrong?</p>
  
  <pre><code>cmd = "/path/to/unzipped_s3cmd/s3cmd get s3://%s %s/"
  subprocess.call(cmd % (s3path,localpath), shell=True)
  </code></pre>
  
  <p>I am running the celery task under the django user.</p>