How to rename multiple directory from DOS prompt with different names : How to rename multiple directory from DOS prompt with different names like below :

> alnaddy.com-7-5-2014 -> alnaddy.com
> 
> cairoscene.org-7-5-2014 -> cairoscene.org
> 
> elshaab.org-7-5-2014 -> elshaab.org
> 
> goal.com-7-5-2014 -> goal.com

I have a list of thousands of directories .
thanks