The Cron Job/Crontab
To have your task run at this frequency, use the following cron:
30 18 */8 * *
This cron command translates to the following (in Human-Readable format):
“Every 8 days at 6:30 pm.”
What is a Cron Job & Crontab?
A cron job is a scheduled task that is typically executed by the operating system. Cron jobs are often used to automate repetitive tasks, such as backing up files or checking for updates.
Crontab is a file that contains instructions for the cron daemon, which is a program that executes commands at specified intervals. Crontab files are typically edited with the crontab command, which allows users to create, edit, and delete their own crontab files.
Every cron job uses five fields. Here is an explanation of what each field does in this cron, which runs “every 8 days at 6:30 pm“:
FUN FACT: Cron jobs are named after the Greek god of time, Chronos – so now you know where the name comes from!.
You might want to set up a crontab or cron job to run every 8 days at 6:30 pm for several reasons, including:
- Run a script to update software on servers
- Run a script to backup databases
- Generate reports
- Send out emails
Similar Cron Jobs
You might also want to run a crontab:
- every 5 days
- every 2 days
- every 3 days
- every 4 days
- every 9 days
- every 6 days at 1:00 pm
- every 4 days at 5:30 am
FUN FACT: Cron jobs are often used to perform regular maintenance tasks, such as running backups or sending out reports..
In this article, you learned how to set up a cron job that runs every 8 days at 6:30 pm. 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.