Is it possible for htaccess to join /map / link the contents of one directory with another? For example, I have the following
var/www/vhosts/drupal6/d6/ (master installation)
var/www/vhosts/drupal6/d6/subdir1 etc
var/www/vhosts/drupal6/d6/subdir2 etc
And then I'd like the contents of the following directories to show the contents of (or access) the above (in addition to their own files):
var/www/vhosts/knowledgecomputing.co.uk/httpdocs/
var/www/vhosts/anotherdomain.co.uk/my-directory.com/
var/www/vhosts/customer.com/domain.co.uk/
In this way I can have a single master installation of Drupal, and have other domains access it, and subsequently make it easier to update the one installation, rather than having to update several.