how to change phpmyadmin url in apache ubuntu

For ubuntu (i used ubuntu 12.04), the default phpmyadmin apache configuration can be found at /etc/phpmyadmin/apache.conf

You can open it by type sudo nano /etc/phpmyadmin/apache.conf and change the third

Alias /yournewalias /usr/share/phpmyadmin

To restart apache service

sudo service apache2 restart