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Revision 2 as of 2007-10-28 02:09:48

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MemberManual / UsingCron

This page describes the basic use of cron on HCoop systems.



It is very important that you read the [:MemberManual/RunningUnattendedCommands:Running Unattended Commands page] to understand the general idea of how to run unattended commands on Mire.

Making a cron configuration file

Cron needs a special configuration file to tell it how to operate. It is suggested that this file be called ~/.crontab, though it can have any name.

For an explanation of the format of this file, run:

man 5 crontab

Activating your cron configuration

Once you are satisfied with your setup, run the following command to activate your changes, assuming that your configuration file is called ~/.crontab:

crontab ~/.crontab


One convention for making scripts to run commands in their own PAG, as specified by the [:MemberManual/RunningUnattendedCommands:Running Unattended Commands page], is to create the ~/scripts directory, and place your scripts there. Then, make a cron configuration file that looks something like this.

09 0 * * 0   ~/scripts/clean-mail
11 0 * * 0   ~/scripts/remove-tmp
12 0 * * 0   ~/scripts/weekly-comment-check
*/10 * * * * ~/scripts/make-git-projects