The Cron Job/Crontab
To have your task run at this frequency, use the following cron:
0 0 12 */3 *
This cron command translates to the following (in Human-Readable format):
“Every 3 months on day 12 of the month.”
What is a Cron Job & Crontab?
A cron job is a time-based task that is set to run at a specific interval. For example, a cron job can be set to run every day at midnight in order to update a database or send out nightly emails. Cron jobs are typically used for maintenance tasks that need to be performed on a regular basis.
A crontab is a file that contains a list of commands that are to be executed at specified times. The commands in the crontab are executed by the cron daemon, which runs in the background.
Every cron job uses five fields. Here is an explanation of what each field does in this cron, which runs “every 3 months on day 12 of the month“:
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 3 months on day 12 of the month for several reasons, including:
- Run a financial report every 3 months
- Back up user data every 3 months
- Send out customer satisfaction survey every 3 months
Similar Cron Jobs
You might also want to run a crontab:
- every 4 months
- every 1 month
- every 5 months
- every 3 months
- every 2 months
- every 6 months
- every 5 months on day 31 of the month
- every 3 months on day 29 of the month
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 3 months on day 12 of the month. 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.