The Cron Job/Crontab
To have your task run at this frequency, use the following cron:
0 0 28 * *
This cron command translates to the following (in Human-Readable format):
“Every 1 month 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.
Crontab is a file that contains instructions for the cron daemon. The cron daemon is a program that runs in the background and executes tasks at specified times. The crontab file is used to specify which tasks are to be run and when they are to be run.
Every cron job uses five fields. Here is an explanation of what each field does in this cron, which runs “every 1 month on day 28 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 1 month on day 28 of the month for several reasons, including:
- Checking for updates on a website
- Deleting temporary files
- Generating reports
- Sending emails
Similar Cron Jobs
You might also want to run a crontab:
- every 5 months
- every 4 months
- every 2 months
- every 1 month
- every 2 months on day 4 of the month
- every 4 months on day 30 of the month
FUN FACT: When troubleshooting issues with cron jobs, it can be helpful to run them manually from the command line – this will allow you to see any error messages that might be generated..
In this article, you learned how to set up a cron job that runs every 1 month 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 crontab cheat sheet for a list of hundreds of popular cron jobs.