The Cron Job/Crontab
To have your task run at this frequency, use the following cron:
0 0 18 */6 *
This cron command translates to the following (in Human-Readable format):
“Every 6 months on day 18 of the month.”
What is a Cron Job & Crontab?
A cron job is a task that is scheduled to run at a specific time or interval. Cron is a Linux utility that allows tasks to be automatically run in the background at regular intervals. These tasks are often called “cron jobs.”
Crontab files are typically stored in the /etc/crontab file, but they can also be stored in individual user’s home directories. To edit your own crontab file, you can use the command “crontab -e”. This will open up the file in your default text editor.
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 18 of the month“:
FUN FACT: The most common way to edit cron jobs is using the crontab command – this stands for “cron table,” and it contains all the information about when your tasks should be executed..
You might want to set up a crontab or cron job to run every 6 months on day 18 of the month for several reasons, including:
- update a database
- send out emails
- generate reports
Similar Cron Jobs
You might also want to run a crontab:
- every 2 months
- every 4 months
- every 6 months
- every 3 months
- every 1 month
- every 3 months on day 31 of the month
- every 4 months on day 22 of the month
- every 4 months on day 14 of the month
FUN FACT: Cron jobs are named after the Greek god Chronos, who represents time itself..
In this article, you learned how to set up a cron job that runs every 6 months on day 18 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.