Automatically Delete Cache

The entire cache or only the cache generated by cache plugin?

Hi
I need to delete automatically (once a week) cache generated by cache plugin.

thank you.

1. Create a blank PHP file and copy code below in this file.
2. Place this file in root directory of your WP installation.
3. Setup a cron with weekly interval

header('X-LiteSpeed-Cache-Control: no-cache');
$tag = __DIR__ . '/wp-content/plugins/litespeed-cache/';
$tag = substr(md5($tag), -3) . '_';
header("X-LiteSpeed-Purge:" . $tag);