The Cron Job/Crontab
To have your task run at this frequency, use the following cron:
0 0 28 */6 *
This cron command translates to the following (in Human-Readable format):
“Every 6 months on day 28 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 could 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 regularly.
Crontab is a file that contains instructions for the cron daemon, which is a program that executes commands at specified intervals. Crontab files are typically edited with the crontab command, which allows users to create, edit, and delete their own crontab files.
Every cron job uses five fields. Here is an explanation of what each field does in this cron, which runs “every 6 months on day 28 of the month“:
FUN FACT: Cron jobs are named after the Greek god Chronos, who represents time itself..
You might want to set up a crontab or cron job to run every 6 months on day 28 of the month for several reasons, including:
- Checking for software updates
- Running system maintenance tasks
- Sending out monthly newsletters
- Generating reports
Similar Cron Jobs
You might also want to run a crontab:
- every 6 months
- every 2 months
- every 4 months
- every 5 months
- every 1 month
- every 6 months on day 29 of the month
- every 5 months on day 17 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..
In this article, you learned how to set up a cron job that runs every 6 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.