The Cron Job/Crontab
To have your task run at this frequency, use the following cron:
20 */11 * * *
This cron command translates to the following (in Human-Readable format):
“Every 11 hours at 20 minutes past the hour.”
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 is a file that contains commands and instructions for the cron daemon to execute. The crontab file is usually located in the /etc/cron directory. Each user on a system can have their own crontab file. The commands in the crontab files are executed by the cron daemon at the specified times.
Every cron job uses five fields. Here is an explanation of what each field does in this cron, which runs “every 11 hours at 20 minutes past the hour“:
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 11 hours at 20 minutes past the hour for several reasons, including:
- Generate a report of user activity
- Sync data between two servers
- Rotate log files
- Check for system updates
Similar Cron Jobs
You might also want to run a crontab:
- every 3 hours
- every 5 hours
- every 6 hours
- every 2 hours
- every 11 hours
- every hour between 12:00 am and 11:00 am
- every 2 hours at 40 minutes past the hour
FUN FACT: If you want to edit your personal crontab, just type: “crontab -e” at the command prompt..
In this article, you learned how to set up a cron job that runs every 11 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.