Move all files except some files or folder

mv /var/www/!(drupal7|drupal8) /var/www_bkp/ 

It will move all the content of /var/www into /var/www_bkp except drupal7 and drupal8 folders.

If you want to try the same for some specific files try this:

 mv /var/www/!(a.txt|b.txt) /var/www_bkp 

will move alll the files of /var/www into /var/www_bkp except a.txt and b.txt.