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+[[!meta title="MIT SIPB Scheduled Jobs Service (Cron)"]]
+The scheduled jobs service uses
+[cron](http://www.google.com/search?q=cron) to allow people to set
+up scripts to run at certain times. Although this service has been
+designed with reliability in mind, it should not be used to run
+critical applications that cannot tolerate downtime.
+
+#### **To sign up for the service:**
+
+athena% add scripts  
+athena% signup-cron
+
+(If you are confused about how to run the above commands on Athena,
+e-mail scripts@mit.edu for assistance. You must have an
+[Athena account](http://web.mit.edu/olh/Register/) and understand
+the
+[MITnet rules of use](http://web.mit.edu/olh/Welcome/rules.html) in
+order to use the service.)
+
+This signup process will create a **cron\_scripts** directory and
+place a sample crontab file in it. This provided crontab contains
+some information that should help you get started. Changes to your
+crontab will never take effect until you explicitly load your
+crontab. You can do so by changing to the `cron_scripts` directory
+and running `cronload crontab` (if you do so from Athena, make sure
+you have previously run `add scripts` in your login shell).
+
+Finally, add yourself to the
+[scripts-announce mailing list](https://mailman.mit.edu/mailman/listinfo/scripts-announce)
+if you would like to receive announcements of major service changes
+and outages. This list receives less than one e-mail per month on
+average.
+
+For more information, see our list of
+[Frequently Asked Questions](../faq/).
+
+
+