The Cron Job/Crontab
To have your task run at this frequency, use the following cron:
30 12 */9 * *
This cron command translates to the following (in Human-Readable format):
“Every 9 days at 12:30 pm.”
What is a Cron Job & Crontab?
A cron job is a scheduled task that is typically executed automatically at a predetermined time or interval. Cron jobs are commonly used to perform system maintenance or administrative tasks, such as backing up data or generating reports.
Crontab is a file that contains instructions for the cron daemon. The cron daemon is a program that runs in the background and executes tasks at specified times. The crontab file is used to specify which tasks are to be run and when they are to be run.
Every cron job uses five fields. Here is an explanation of what each field does in this cron, which runs “every 9 days at 12:30 pm“:
FUN FACT: Cron jobs can be used to automate just about any task that needs to be performed regularly – so get creative and see what you can come up with!.
You might want to set up a crontab or cron job to run every 9 days at 12:30 pm for several reasons, including:
- Run a program every 9 days to scrape data from a website
- Send an email to a group of people every 9 days
- Back up a database every 9 days
Similar Cron Jobs
You might also want to run a crontab:
FUN FACT: If you need to temporarily disable a cron job, you can simply comment out the line in the crontab file that corresponds to that particular task..
In this article, you learned how to set up a cron job that runs every 9 days at 12:30 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 crontab cheat sheet for a list of hundreds of popular cron jobs.