The Cron Job/Crontab
To have your task run at this frequency, use the following cron:
0 0 16 */4 *
This cron command translates to the following (in Human-Readable format):
“Every 4 months on day 16 of the month.”
What is a Cron Job & Crontab?
A cron job is a task that is scheduled to run at a specific time or interval. Cron jobs are typically used for automating system maintenance or administration tasks, such as running backups or sending email reports.
A crontab is a file containing commands and instructions for the cron daemon to execute.
Every cron job uses five fields. Here is an explanation of what each field does in this cron, which runs “every 4 months on day 16 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!.
You might want to set up a crontab or cron job to run every 4 months on day 16 of the month for several reasons, including:
- updating a software application
- backing up user data
- sending out monthly newsletters
- generating reports
Similar Cron Jobs
You might also want to run a crontab:
- every 2 months
- every 3 months
- every 5 months
- every 6 months
- every 6 months on day 10 of the month
- every 1 month on day 27 of the month
- every 6 months on day 18 of the month
FUN FACT: Cron is one of the most powerful tools available on a Linux system – use it wisely!.
In this article, you learned how to set up a cron job that runs every 4 months on day 16 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.