Linux Journal: Take Command -- cron: Job SchedulerAug 02, 1999, 07:01 (2 Talkback[s])
(Other stories by Michael S. Keller)
"Have you ever wandered near your Linux box in the middle of the night, only to discover the hard disk working furiously? If you have, or just want a way for some task to occur at regular intervals, cron is the answer.
"The cron daemon, crond, packaged with most Linux distributions, controls scheduling of regularly occurring jobs."
"I have provided a brief introduction to the cron facility, a typical part of Linux and other UNIX operating systems. It will provide a starting point for time-related work you want your Linux system to perform. In brief, if you want to schedule repetitive tasks so as not to type the same commands again and again, use cron."