The Cron Job/Crontab
To have your task run at this frequency, use the following cron:
0 9 */2 * *
This cron command translates to the following (in Human-Readable format):
“Every 2 days at 9:00 am.”
What is a Cron Job & Crontab?
A cron job is a time-based task that is set to run at a specific time or interval. These jobs are usually used for automating tasks, such as running backups or sending emails. Cron is the name of the program that enables users to schedule these jobs.
A crontab is a file that contains instructions for the cron daemon. The cron daemon is a program that runs in the background and executes tasks at specified times. A crontab file typically contains a list of commands, with each command being executed at a specified time.
Every cron job uses five fields. Here is an explanation of what each field does in this cron, which runs “every 2 days at 9:00 am“:
FUN FACT: If you want to edit your personal crontab, just type: “crontab -e” at the command prompt..
You might want to set up a crontab or cron job to run every 2 days at 9:00 am for several reasons, including:
- Run a script to backup databases every two days
- Generate reports every two days
- Check for system updates every two days
- Send out email notifications every two days
Similar Cron Jobs
You might also want to run a crontab:
- every 3 days
- every 1 day
- every 4 days
- every 6 days
- every 4 days at 8:00 am
- every 9 days at 3:00 am
- every 10 days at 12:30 am
FUN FACT: Cron jobs are used to schedule commands or scripts to run automatically at a specified time and date..
In this article, you learned how to set up a cron job that runs every 2 days at 9:00 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 crontab cheat sheet for a list of hundreds of popular cron jobs.