I've just got a couple of queries about the use of cron. Firstly, is it what I should be using it for automated execution or is there something better? Secondly, what should I be doing from a security point of view, is it fine to have root running automated commands if root access is needed for the commands? And last of all, how extensively do people use this? Is it something people use to routinely check mail services are running, check mail queues, proxies etc?