How to know if the site is running on Drupal? what are the mark-up patterns?

Question

I'm wondering what is the markup pattern of DRUPAL. I know that the site is running in Wordpress when I view it's mark-up and see /wp-themes, or in Joomla it uses /templates /administrator (for admin page eg. site.com/administrator).

Answer 1

For me the fatest way is to check for the drupal.js in the source or the Drupal global js variable using a js console like firebug.

Answer 2

Try to go to update.php. You should see Access Denied and a blueish theme, which is Garland.

Also you can go to /user and recognize that it's a Drupal login. Wordpress goes to /wp-login and Joomla goes to /administer.