The Cron Job/Crontab
To have your task run at this frequency, use the following cron:
0 6 */4 * *
This cron command translates to the following (in Human-Readable format):
“Every 4 days at 6:00 am.”
What is a Cron Job & Crontab?
A cron job is a scheduled task that is typically executed by the server in order to automate certain processes or tasks. For example, a cron job could be set up to automatically backup a database every night at 2am.
Crontab files are typically stored in the /etc/crontab file, but they can also be stored in individual user’s home directories. To edit your own crontab file, you can use the command “crontab -e”. This will open up the file in your default text editor.
Every cron job uses five fields. Here is an explanation of what each field does in this cron, which runs “every 4 days at 6:00 am“:
FUN FACT: When configuring a cron job, you can specify the minute, hour, day of the month, month and day of the week when it should run – this gives you a lot of flexibility in terms of when your task will be performed automatically!.
You might want to set up a crontab or cron job to run every 4 days at 6:00 am for several reasons, including:
- Sending a daily digest email to all users
- Generating a report of yesterday’s sales
- Backup up the database every 4 days
- Clearing the cache every 4 days
Similar Cron Jobs
You might also want to run a crontab:
- every 7 days
- every 1 day
- every 3 days
- every 5 days
- every 6 days
- every 9 days
- every 6 days at 3:00 am
- every 1 day at 11:00 pm
- every 8 days at 7:30 pm
FUN FACT: Cron jobs can be used to automate just about any task that needs to be performed regularly – so get creative and see what you can come up with!.
In this article, you learned how to set up a cron job that runs every 4 days at 6:00 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.