The Cron Job/Crontab
To have your task run at this frequency, use the following cron:
0 21 */5 * *
This cron command translates to the following (in Human-Readable format):
“Every 5 days at 9:00 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 files are stored in the “/etc/cron*” directories on most Linux systems. Each user has their own crontab file, and there is also a system-wide crontab file that can be used to schedule system tasks.
Every cron job uses five fields. Here is an explanation of what each field does in this cron, which runs “every 5 days at 9:00 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!.
You might want to set up a crontab or cron job to run every 5 days at 9:00 pm for several reasons, including:
- Sending a reminder email to a user
- Generating a report
- Backup data
- Clearing cache
Similar Cron Jobs
You might also want to run a crontab:
- every 4 days
- every 10 days
- every 9 days
- every 7 days
- every 3 days
- every 8 days
- every 10 days at 4:30 am
- every 4 days at 8:00 am
- every 8 days at 5:00 pm
FUN FACT: Each user on a system can have their own crontab, and commands in them will be executed as that user..
In this article, you learned how to set up a cron job that runs every 5 days at 9:00 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.