Sudo without password on Fedora
        by Manoj[ Edit ] 2012-04-11 16:09:30 
         
        
        	
Open terminal and enter the following command :
sudo vi  /etc/sudoers
Add this line at the end (change “pirat9” to your username):
pirat9 ALL=(ALL) NOPASSWD: ALL
Ctrl-X to leave, save your changes, and you’re done!
This  method  worked fine in  my  Fedora.