Cron Job Every 7 Days At 3:00 am (Crontab)

This page will help you quickly and easily set up a cron job to run every 7 days at 3:00 am.

The Cron Job/Crontab

To have your task run at this frequency, use the following cron:

0 3 */7 * *

This cron command translates to the following (in Human-Readable format):

“Every 7 days at 3:00 am.”

What is a Cron Job & Crontab?

A cron job is a task that is scheduled to run at a specified time or interval. Cron jobs are typically used to perform system maintenance or administration tasks, such as backing up data or generating reports.

Crontab files are stored in the “/etc/cron*” directories on most Linux systems. Each user has their own crontab file, and there is also a system-wide crontab file that can be used to schedule system tasks.

Cron Fields

Every cron job uses five fields. Here is an explanation of what each field does in this cron, which runs “every 7 days at 3:00 am“:

  • Field 1: (0) indicates that the task will be run at minute 0.
  • Field 2: (3) indicates that the task will be run at hour 3 (3 am).
  • Field 3: (*/7) indicates that the task will be run every 7 days.
  • Field 4: (*) indicates that the task will be run every month.
  • Field 5: (*) indicates that the task will be run every day of the week.
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    FUN FACT: Cron jobs are often used to perform regular maintenance tasks, such as running backups or sending out reports..

    Use Cases

    You might want to set up a crontab or cron job to run every 7 days at 3:00 am for several reasons, including:

    • Run a script to update a database
    • Generate reports
    • Perform maintenance tasks
    • Send out notifications or emails

    Similar Cron Jobs

    You might also want to run a crontab:

    FUN FACT: Each user on a system can have their own crontab, and commands in them will be executed as that user..

    Wrapping Up

    In this article, you learned how to set up a cron job that runs every 7 days at 3:00 am. Please share this page with friends and colleagues if you find it useful.

    If you have any questions, please don’t hesitate to comment below.

    If you are looking for cron jobs that run at certain minutes, hours, days, weekdays, or months, or if you are looking for miscellaneous cron jobs, then check out our relevant sections, or visit our cron job cheat sheet for a list of hundreds of popular cron jobs.

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