What are cron and crontab, and how do I use them?

Saturday, August 21st, 2010 140 views

Note: On most systems, you must get permission from the system administrator before you can submit job requests to cron. On some shared systems, because there is only one crontab file, only the administrator has access to the crontab command. To request that cron be enabled on your Webserve account, see the Indiana University Webmaster’s [...]

How to use cronjob tables (Crontab)

Wednesday, August 18th, 2010 149 views

Cron is the Unix/Linux event scheduler. It’s great for automating a multitude of administrative tasks like backing up your data. See Wikipedia: Crontab. When I examined the man pages I found that it is relatively straightforward but has complicated options and rules that take quite some unraveling to appreciate properly. And they’re so hard for [...]