Magento - run cronjobs manually from CLI

manualcron.php

<?php
/*
Given:
<foo_bar_baz>
    <schedule>
        <cron_expr>0 0 * * *</cron_expr>
    </schedule>
    <run>
        <model>foo/bar::baz</model>
    </run>
</foo_bar_baz>
*/

require_once 'app/Mage.php';
Mage::app();

$model = Mage::getModel('foo/bar');
$model->baz();