The Cron Job/Crontab
To have your task run at this frequency, use the following cron:
0 23 */8 * *
This cron command translates to the following (in Human-Readable format):
“Every 8 days at 11:00 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 backup script every night to sending out an email notification once a week. Cron jobs are typically used for maintenance or repetitive tasks.
A crontab is a file that contains a list of commands to be executed by the cron daemon. The commands in the crontab are executed at the specified times.
Every cron job uses five fields. Here is an explanation of what each field does in this cron, which runs “every 8 days at 11:00 pm“:
FUN FACT: If you want to edit your personal crontab, just type: “crontab -e” at the command prompt..
You might want to set up a crontab or cron job to run every 8 days at 11:00 pm for several reasons, including:
- Scheduling a backup to run every 8 days at 11:00 pm
- Running a script to update a database every 8 days at 11:00 pm
- Generating reports every 8 days at 11:00 pm
Similar Cron Jobs
You might also want to run a crontab:
- every 4 days
- every 1 day
- every 6 days
- every 10 days
- every 3 days
- every 7 days at 3:00 am
- every 3 days at 2:30 am
- every 4 days at 9:00 pm
FUN FACT: One common use for cron jobs is to send out email reminders or notifications based on certain events (such as an upcoming deadline)..
In this article, you learned how to set up a cron job that runs every 8 days at 11:00 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 cron job cheat sheet for a list of hundreds of popular cron jobs.