Laravel Task Scheduling Every X Hours
You've tagged your question as Laravel 4, but I don't think the scheduler was introduced until Laravel 5...
Anyway, based on the code snippet you've posted, you could use the cron method.
$schedule->command('catalog:update')->cron('0 */2 * * *'); // every 2 hours$schedule->command('catalog:update')->cron('0 */5 * * *'); // every 5 hoursSee the docs for other options. https://laravel.com/docs/5.4/scheduling#defining-schedules