The Cron Job/Crontab
To have your task run at this frequency, use the following cron:
0 0 8 */4 *
This cron command translates to the following (in Human-Readable format):
“Every 4 months on day 8 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 time or interval. This can be used to automate tasks such as running backups, sending emails, or running system maintenance scripts.
To create or edit a cron job, users must first open the crontab file using a text editor. The crontab file contains instructions for the cron daemon, which is the program that actually executes the commands specified in the file. Each line in the crontab file represents a single task or command.
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 8 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 4 months on day 8 of the month for several reasons, including:
- Run a script to update software on the 8th day of every 4th month
- Perform maintenance tasks on a database on the 8th day of every 4th month
- Generate reports on the 8th day of every 4th month
Similar Cron Jobs
You might also want to run a crontab:
- every 1 month
- every 4 months
- every 2 months
- every 3 months
- every 6 months
- every 5 months on day 24 of the month
- every 1 month on day 29 of the month
FUN FACT: When editing your crontab, it is important to use a text editor that supports Unix-style line endings (LF), as opposed to Windows-style line endings (CRLF)..
In this article, you learned how to set up a cron job that runs every 4 months on day 8 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.