I believe you can use the metadata templates for this purpose, but the digiKam documentation is not exactly clear on this.

According to section 2.4.3 of the digiKam Handbook:


  At the very least,
  for all images that will be exported and/or published in any form, the authorship and copyright
  information should be part of their metadata. Nothing more simple to do with digiKam: you can
  setup the default identity, and any images ingested be digiKam will be automatically informed.


I believe this is referring to the metadata templates which you can define by opening digiKam then selecting the "Settings" menu, then "Configure digiKam". In the window that appears, select the "Templates" icon from the scrolling menu on the left. You should now see the "Metadata templates" page of digiKam's settings, and you can define copyright and author information here. There are also tabs for "Location", "Contact" and "Subjects" but I don't know why you would want these values to be appended to all imported images.

I recommend you run some tests to check that you get the result you want with a few test images, before going ahead with a mass import of your image library.

How do I apply my copyright information from XMP automatically with DigiKam?
I am in the process of moving a drupal site to a new server. 
I copied the drupal db and moved all the files of the drupal installation.

The old url is http://www.sniffingmusicians.echidna-band.com/ and the new is http://www.sniffingmusicians.com/, which point to 2 different servers. 

Even though the frontpage of new is there when I login it redirects me to the old domain! Additionally, all the content is prefixed with the old url. I changed the $base_url in the settings php but there is no real impact. Where else can I reconfigure my site's url?
