Documentation provides code for clearing expired cache (https://docs.joomla.org/Purging_expired_cache_files):
<?php
/**
* @package Joomla.Cli
*
* @copyright Copyright (C) 2005 - 2013 Open Source Matters, Inc. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE.txt
*/
// Make sure we're being called from the command line, not a web interface
if (array_key_exists('REQUEST_METHOD', $_SERVER)) die();
// Initialize Joomla framework
define('_JEXEC', 1);
define('DS', DIRECTORY_SEPARATOR);
// Load system defines
if (file_exists(dirname(dirname(__FILE__)) . '/defines.php'))
{
require_once dirname(dirname(__FILE__)) . '/defines.php';
}
if (!defined('_JDEFINES'))
{
define('JPATH_BASE', dirname(dirname(__FILE__)));
require_once JPATH_BASE . '/includes/defines.php';
}
// Get the framework.
require_once JPATH_LIBRARIES . '/import.php';
// Bootstrap the CMS libraries.
require_once JPATH_LIBRARIES . '/cms.php';
// Force library to be in JError legacy mode
JError::$legacy = true;
/**
* Cron job to trash expired cache data
*
* @package Joomla.CLI
* @since 2.5
*/
class GarbageCron extends JApplicationCli
{
/**
* Entry point for the script
*
* @return void
*
* @since 2.5
*/
public function doExecute()
{
$cache = JFactory::getCache();
$cache->gc();
}
}
JApplicationCli::getInstance('GarbageCron')->execute();
It is a file garbagecron.php.
But how to clear all cache files in Joomla?