I recently had to update a number of drupal installations, some of them quite old. Here is a bash "few-liner" to migrate an install to CVS, making it much easier to update in the future.
cd your_drupal_dir # replace DRUPAL-6-12 with the appropriate version tag cvs -z6 -d :pserver:anonymous:email@example.com:/cvs/drupal checkout -r DRUPAL-6-12 new_drupal rm -rf new_drupal/sites mkdir old_drupal for i in `ls drupal`; do mv $i old_drupal mv drupal/$i . done # if you have drush drush updatedb # make sure everything's working, then rm -rf old_drupal
Standard disclaimers apply, hope this helps some people!