The Cron Job/Crontab
To have your task run at this frequency, use the following cron:
0 0 28 */3 *
This cron command translates to the following (in Human-Readable format):
“Every 3 months on day 28 of the month.”
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.
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.
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 28 of the month“:
FUN FACT: Cron jobs are stored in a file called “crontab”, which is short for “cron table”..
You might want to set up a crontab or cron job to run every 3 months on day 28 of the month for several reasons, including:
- Calculate and pay out monthly interest on a savings account
- Generate a report of sales figures for the previous month
- Send a reminder email to customers who have not made a purchase in the past 3 months
- Delete temporary files that are more than 3 months old
Similar Cron Jobs
You might also want to run a crontab:
- every 2 months
- every 4 months
- every 5 months
- every 3 months
- every 6 months
- every 1 month
- every 3 months on day 22 of the month
- every 4 months on day 1 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 28 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.