The Cron Job/Crontab
To have your task run at this frequency, use the following cron:
0 0 */7 * *
This cron command translates to the following (in Human-Readable format):
“Every 7 days.”
What is a Cron Job & Crontab?
A cron job is a scheduled task that is typically executed by the operating system on a regular basis. Cron jobs are often used to perform maintenance or administrative tasks, such as backing up data or updating software.
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.
Every cron job uses five fields. Here is an explanation of what each field does in this cron, which runs “every 7 days“:
FUN FACT: Cron jobs are named after the Greek god Chronos, who represents time itself..
You might want to set up a crontab or cron job to run every 7 days for several reasons, including:
- Send a weekly email report on website traffic
- Back up the database
- Delete old log files
- Generate a report on sales for the past week
Similar Cron Jobs
You might also want to run a crontab:
- every 3 days
- every 8 days
- every 9 days
- every 1 day
- every 5 days
- every 2 days at 8:00 pm
- every 2 days at 6:00 am
FUN FACT: When configuring a cron job, you can specify the minute, hour, day of the month, month and day of the week when it should run – this gives you a lot of flexibility in terms of when your task will be performed automatically!.
In this article, you learned how to set up a cron job that runs every 7 days. 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 crontab cheat sheet for a list of hundreds of popular cron jobs.