The Cron Job/Crontab
To have your task run at this frequency, use the following cron:
0 0 31 * *
This cron command translates to the following (in Human-Readable format):
“Every 1 month on day 31 of the month.”
What is a Cron Job & Crontab?
In computing, a cron job is a time-based task that is set to run at certain predetermined times or intervals. A cron job can be used to schedule anything from basic tasks like running backups to more complex tasks like sending out email alerts or syncing files between servers. Cron jobs are typically used for maintenance or administrative tasks that need to be performed on a regular basis.
A crontab is a text file that contains a list of commands to be run at specified times. The commands in the crontab are executed by the cron daemon, which runs on most Unix-like systems.
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 31 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..
You might want to set up a crontab or cron job to run every 1 month on day 31 of the month for several reasons, including:
- To run a script that cleans up log files older than 31 days
- To send out a monthly newsletter on the 31st of every month
- To generate monthly reports on the 31st of every month
Similar Cron Jobs
You might also want to run a crontab:
- every 4 months
- every 3 months
- every 5 months
- every 6 months
- every 3 months on day 23 of the month
- every 4 months on day 10 of the month
- every 2 months on day 17 of the month
FUN FACT: You can use cron to schedule just about anything!.
In this article, you learned how to set up a cron job that runs every 1 month on day 31 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.