The Cron Job/Crontab
To have your task run at this frequency, use the following cron:
30 0 */4 * *
This cron command translates to the following (in Human-Readable format):
“Every 4 days at 12:30 am.”
What is a Cron Job & Crontab?
A cron job is a time-based task that is typically set up to run automatically at regular intervals. For example, a cron job might be used to send out a daily email report or to back up files every night.
The crontab is a file that contains instructions for the cron daemon. The crontab is typically edited using the crontab command.
Every cron job uses five fields. Here is an explanation of what each field does in this cron, which runs “every 4 days at 12:30 am“:
FUN FACT: If you need to delete a cron job, simply remove the corresponding line from the crontab file and save your changes..
You might want to set up a crontab or cron job to run every 4 days at 12:30 am for several reasons, including:
- run a backup every 4 days at 12:30 am
- send out a report every 4 days at 12:30 am
- check for updates every 4 days at 12:30 am
Similar Cron Jobs
You might also want to run a crontab:
- every 6 days
- every 8 days
- every 1 day
- every 7 days
- every 10 days
- every 9 days
- every 5 days at 12:30 pm
- every 2 days at 4:00 pm
FUN FACT: Cron jobs are automated processes that run on a schedule..
In this article, you learned how to set up a cron job that runs every 4 days at 12:30 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.