How add a custom page template for an article node Hi I want to create an article then define a alias path for it then change template of that page. For example I add an article with title "categories" and no other content like body or image. Then I define "categories" alias for it. Now when I add "page--categories.tpl.php" in my theme template folder nothing happened to page
    http://example.com/categories
and I just see a white page in content region.
Refer this url http://drupalknowledge.blogspot.in/2012/01/different-page-template-for-different.html

You can print  $vars['node'] variable and get the particular node path to give different template.

I hope this will help you.