The Cron Job/Crontab
To have your task run at this frequency, use the following cron:
0 11 */9 * *
This cron command translates to the following (in Human-Readable format):
“Every 9 days at 11:00 am.”
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 typically used for automating tasks, such as running backups or sending emails.
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 11:00 am“:
FUN FACT: When editing your crontab, it is important to use a text editor that supports Unix-style line endings (LF), as opposed to Windows-style line endings (CRLF)..
You might want to set up a crontab or cron job to run every 9 days at 11:00 am for several reasons, including:
- Automatically backing up data
- Sending out reminders or updates
- Checking for system updates
- Generating reports
Similar Cron Jobs
You might also want to run a crontab:
- every 2 days
- every 6 days
- every 9 days
- every 10 days
- every 8 days
- every 5 days
- every 3 days at 11:00 pm
- every 10 days at 4:00 pm
FUN FACT: If you need to delete a cron job, simply remove the corresponding line from the crontab file and save your changes..
In this article, you learned how to set up a cron job that runs every 9 days at 11:00 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.