The Cron Job/Crontab
To have your task run at this frequency, use the following cron:
0 22 */9 * *
This cron command translates to the following (in Human-Readable format):
“Every 9 days at 10:00 pm.”
What is a Cron Job & Crontab?
A cron job is a task that is scheduled to run at a specific time or interval. Cron jobs are commonly used to automate system maintenance or administration tasks, such as running backups or sending emails.
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, which runs in the background.
Every cron job uses five fields. Here is an explanation of what each field does in this cron, which runs “every 9 days at 10:00 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)..
You might want to set up a crontab or cron job to run every 9 days at 10:00 pm for several reasons, including:
- Automatically backing up user data
- Sending out weekly reminders
- Generating reports
- Checking for system updates
Similar Cron Jobs
You might also want to run a crontab:
- every 6 days
- every 9 days
- every 4 days
- every 2 days
- every 10 days
- every 8 days
- every 4 days at 4:00 pm
- every 4 days at 6:30 pm
FUN FACT: Cron is one of the most versatile tools in a Linux administrator’s toolbox..
In this article, you learned how to set up a cron job that runs every 9 days at 10:00 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.