The Cron Job/Crontab
To have your task run at this frequency, use the following cron:
30 13 */8 * *
This cron command translates to the following (in Human-Readable format):
“Every 8 days at 1:30 pm.”
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.
A crontab is a file that contains a list of commands that are to be executed at specified times. The commands in the crontab are executed by the cron daemon.
Every cron job uses five fields. Here is an explanation of what each field does in this cron, which runs “every 8 days at 1:30 pm“:
FUN FACT: When troubleshooting issues with cron jobs, it can be helpful to run them manually from the command line – this will allow you to see any error messages that might be generated..
You might want to set up a crontab or cron job to run every 8 days at 1:30 pm for several reasons, including:
- Cleaning up old log files
- Deleting unused user accounts
- Archiving data
- Updating software
Similar Cron Jobs
You might also want to run a crontab:
- every 1 day
- every 7 days
- every 8 days
- every 2 days
- every 2 days at 3:30 pm
- every 5 days at 1:00 pm
- every 4 days at 3:00 pm
FUN FACT: Cron jobs are stored in a file called “crontab”, which is short for “cron table”..
In this article, you learned how to set up a cron job that runs every 8 days at 1:30 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.