Creating Cron Jobs

By Ollie Armstrong Thursday, 3rd March 2011

Welcome to a short getting started guide into scheduling regular tasks using cron.

Unless you have a reasonable background with Linux systems you probably haven’t got a clue what I’m on about when I mention cron. Let’s start basic. Say you want to run a command at a specific time of day, everyday, like clearing the temporary directory, for that we use cron. Cron is a method of scheduling tasks and it’s very versatile.

To be able to use cron we have to use what is called a crontab, short for cron table. It’s the method used to schedule the commands and specify when they run.

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