How to retrieve the slug of current page?

Question:

I am trying to retrieve the slug of the current wordpress page outside the loop. The title of the page returns with wp_title () but how can I get the slug?

<li><a href="/slug-of-current-page/"><?php wp_title("",true); ?></a></li>

Answer:

use global variable $post.

<?php 
    global $post;
    $post_slug=$post->post_name;
?>