The Cron Job/Crontab
To have your task run at this frequency, use the following cron:
0 0 15 */2 *
This cron command translates to the following (in Human-Readable format):
“Every 2 months on day 15 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 table or list of commands that are scheduled to run at specified times. The commands in a crontab file (also called a “cron table”) are normally executed by the cron daemon, which runs in the background and executes these commands automatically.
Every cron job uses five fields. Here is an explanation of what each field does in this cron, which runs “every 2 months on day 15 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)..
You might want to set up a crontab or cron job to run every 2 months on day 15 of the month for several reasons, including:
- To send out a report of activity for the past two months
- To generate a monthly invoice
- To calculate statistics for the number of users who have signed up in the past two months
Similar Cron Jobs
You might also want to run a crontab:
- every 2 months
- every 4 months
- every 1 month
- every 6 months
- every 3 months
- every 6 months on day 23 of the month
- every 6 months on day 6 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!.
In this article, you learned how to set up a cron job that runs every 2 months on day 15 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.