<?xml version="1.0" encoding="utf-8"?>
<rougail version="0.9">
    <services> 
        <service name='test'>
            <file file_type="variable" source="mailname" variable="var">file_name</file>
        </service>
    </services>
    <variables>
        <variable name='file_name' type='filename'>
            <value>/etc/mailname</value>
        </variable>
        <variable name='var' type='string'>
            <value>mailname</value>
        </variable>
    </variables>
</rougail>