The Cron Job/Crontab
To have your task run at this frequency, use the following cron:
0 0 7 */3 *
This cron command translates to the following (in Human-Readable format):
“Every 3 months on day 7 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 to be executed by the cron daemon. The commands in the crontab are executed 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 3 months on day 7 of the month“:
FUN FACT: Cron is one of the most powerful tools available on a Linux system – use it wisely!.
You might want to set up a crontab or cron job to run every 3 months on day 7 of the month for several reasons, including:
- A backup script that runs every 3 months
- A monthly report that is sent out on the 7th day of every third month
- A script that cleans up temporary files every 3 months
Similar Cron Jobs
You might also want to run a crontab:
- every 4 months
- every 2 months
- every 3 months
- every 6 months
- every 1 month
- every 5 months
- every 5 months on day 6 of the month
- every 5 months on day 28 of the month
FUN FACT: When configuring a cron job, you can specify the minute, hour, day of the month, month and day of the week when it should run – this gives you a lot of flexibility in terms of when your task will be performed automatically!.
In this article, you learned how to set up a cron job that runs every 3 months on day 7 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 cron job cheat sheet for a list of hundreds of popular cron jobs.