The Cron Job/Crontab
To have your task run at this frequency, use the following cron:
20 */6 * * *
This cron command translates to the following (in Human-Readable format):
“Every 6 hours at 20 minutes past the hour.”
What is a Cron Job & Crontab?
A cron job is a task that is scheduled to run at a specified time or interval. Cron jobs are typically used to perform system maintenance or administration tasks, such as backing up data or generating reports.
A crontab is a text file that contains a list of commands to be run at specified times. The commands in the crontab are executed by the cron daemon, which runs on most Unix-like systems.
Every cron job uses five fields. Here is an explanation of what each field does in this cron, which runs “every 6 hours at 20 minutes past the hour“:
FUN FACT: Cron jobs are used to schedule commands or scripts to run automatically at a specified time and date..
You might want to set up a crontab or cron job to run every 6 hours at 20 minutes past the hour for several reasons, including:
- Running a backup of a database
- Checking for new software updates
- Generating reports
- Sending out notifications
Similar Cron Jobs
You might also want to run a crontab:
- every 9 hours
- every 10 hours
- every 11 hours
- every 4 hours
- every 1 hour
- every hour between 4:00 pm and 10:00 pm
- every hour between 10:00 am and 4:00 pm
- every hour between 3:00 pm and 4:00 pm
FUN FACT: The most common way to edit cron jobs is using the crontab command – this stands for “cron table,” and it contains all the information about when your tasks should be executed..
In this article, you learned how to set up a cron job that runs every 6 hours at 20 minutes past the hour. 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.