You may be asking yourself, "What in the world is Cron?". Well, simply put cron is a tool that Linux and Mac bot operators can use in order to set a task to be automatically run at certain times.
Now you may be asking, "How is this useful, and relevant to pybot?". Well, cron can be used to run scripts at certain times during the day. This can be useful if you would like for your bot to do things like fixing broken/double redirects every hour, day, or week.