The Cron Job/Crontab
To have your task run at this frequency, use the following cron:
30 16 */8 * *
This cron command translates to the following (in Human-Readable format):
“Every 8 days at 4:30 pm.”
What is a Cron Job & Crontab?
A cron job is a scheduled task that is typically executed by the server in order to automate certain processes or tasks. For example, a cron job could be set up to automatically backup a database every night at 2am.
Crontab is a file that contains instructions for the cron daemon, which is a program that executes commands at specified intervals. Crontab files are typically edited with the crontab command, which allows users to create, edit, and delete their own crontab files.
Every cron job uses five fields. Here is an explanation of what each field does in this cron, which runs “every 8 days at 4:30 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!.
You might want to set up a crontab or cron job to run every 8 days at 4:30 pm for several reasons, including:
- Checking for updates to a software package
- Running a daily backup script
- Generating reports
- Clearing temporary files
Similar Cron Jobs
You might also want to run a crontab:
- every 1 day
- every 9 days
- every 8 days
- every 3 days
- every 1 day at 8:00 am
- every 7 days at 1:00 pm
- every 9 days at 11:30 am
FUN FACT: Cron jobs are automated processes that run on a schedule..
In this article, you learned how to set up a cron job that runs every 8 days at 4:30 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.