The Cron Job/Crontab
To have your task run at this frequency, use the following cron:
0 22 */8 * *
This cron command translates to the following (in Human-Readable format):
“Every 8 days at 10:00 pm.”
What is a Cron Job & Crontab?
A cron job is a time-based task that is set to run at specific intervals. This can be anything from running a script every hour to backing up a database every day. Cron jobs are typically used for maintenance tasks or tasks that need to be performed regularly, such as checking for updates or sending out 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.
Every cron job uses five fields. Here is an explanation of what each field does in this cron, which runs “every 8 days at 10:00 pm“:
FUN FACT: Cron is one of the most versatile tools in a Linux administrator’s toolbox..
You might want to set up a crontab or cron job to run every 8 days at 10:00 pm for several reasons, including:
- Automatically generate a report and send it via email
- Perform a backup of the database
- Delete temporary files that are more than 7 days old
Similar Cron Jobs
You might also want to run a crontab:
- every 9 days
- every 7 days
- every 10 days
- every 4 days
- every 8 days
- every 3 days at 10:30 pm
- every 6 days at 5:30 pm
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 8 days at 10:00 pm. 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.