The Cron Job/Crontab
To have your task run at this frequency, use the following cron:
0 0 17 */6 *
This cron command translates to the following (in Human-Readable format):
“Every 6 months on day 17 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 jobs are typically used for automating tasks, such as running backups or sending emails.
Crontab is a file that contains commands and instructions for the cron daemon to execute. The crontab file is usually located in the /etc/cron directory. Each user on a system can have their own crontab file. The commands in the crontab files are executed by the cron daemon at the specified times.
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 17 of the month“:
FUN FACT: If you want to see what commands are scheduled in your crontab, type: “crontab -l”.
You might want to set up a crontab or cron job to run every 6 months on day 17 of the month for several reasons, including:
- Scheduling regular maintenance or updates for a service
- Calculating and storing monthly statistics
- Generating monthly reports
- Checking for expired leases or contracts
Similar Cron Jobs
You might also want to run a crontab:
- every 6 months
- every 5 months
- every 2 months
- every 3 months
- every 1 month
- every 3 months on day 13 of the month
- every 2 months on day 14 of the month
- every 4 months on day 19 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 17 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.