How to change Admin URL in Magento?

How to change Admin URL in Magento?

This is very simple work. You have to change local.xml file.

/app/etc/local.xml

Change From :

<frontname><![CDATA[admin]]></frontName>

Change To :

<frontname><![CDATA[administrator]]></frontName>

Now your Admin url will be: 
yourdomain.com/administrator