backup
------

.. code-block:: text

  usage: backup <src_url> <dst_url> [options] 
   
   optional arguments: 
   --ctime|mtime <val>s|m|h|d use the specified timewindow to select entries for backup
   --excl_xattr val_1[,val_2]...[,val_n] extended attributes which are not enforced and
    also not checked during the verification step