The Cron Job/Crontab
To have your task run at this frequency, use the following cron:
0 7 */9 * *
This cron command translates to the following (in Human-Readable format):
“Every 9 days at 7:00 am.”
What is a Cron Job & Crontab?
A cron job is a time-based task that is set to run at specific intervals. This can be anything from running a backup script every night to sending out an email notification once a week. Cron jobs are typically used for maintenance or repetitive tasks.
A 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. A crontab file consists of a series of lines, each of which represents a task to be executed. Each line has five fields, separated by spaces or tabs.
Every cron job uses five fields. Here is an explanation of what each field does in this cron, which runs “every 9 days at 7:00 am“:
FUN FACT: Cron jobs are named after the Greek god Chronos, who represents time itself..
You might want to set up a crontab or cron job to run every 9 days at 7:00 am for several reasons, including:
- Running a script to update software on servers
- Generating reports that need to be emailed on a regular basis
- Deleting temporary files that are no longer needed
- Calling an API to fetch data that needs to be processed
Similar Cron Jobs
You might also want to run a crontab:
- every 5 days
- every 4 days
- every 3 days
- every 7 days
- every 1 day
- every 2 days at 6:30 am
- every 5 days at 9:30 am
- every 4 days at 4:30 pm
FUN FACT: If a cron job is not properly configured, it might never execute – so make sure you double-check your settings before setting one up!.
In this article, you learned how to set up a cron job that runs every 9 days at 7:00 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 crontab cheat sheet for a list of hundreds of popular cron jobs.