The Cron Job/Crontab
To have your task run at this frequency, use the following cron:
0 2 */9 * *
This cron command translates to the following (in Human-Readable format):
“Every 9 days at 2:00 am.”
What is a Cron Job & Crontab?
A cron job is a time-based task that is set to run at a specific time or interval. These jobs are usually used for automating tasks, such as running backups or sending emails. Cron is the name of the program that enables users to schedule these jobs.
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 9 days at 2:00 am“:
FUN FACT: Cron jobs can be set up to run at specific times, or they can be configured to run periodically (e.g., every hour)..
You might want to set up a crontab or cron job to run every 9 days at 2:00 am for several reasons, including:
- A daily report that is emailed every 9 days
- A script that cleans up temporary files every 9 days
- A script that backs up a database every 9 days
Similar Cron Jobs
You might also want to run a crontab:
- every 9 days
- every 4 days
- every 2 days
- every 3 days
- every 1 day
- every 1 day at 7:00 pm
- every 8 days at 6:00 pm
- every 3 days at 11:00 pm
FUN FACT: Cron jobs are named after the Greek god Chronos, who represents time itself..
In this article, you learned how to set up a cron job that runs every 9 days at 2:00 am. 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.