Cron Job Every 4 Days At 8:30 pm (Crontab)

This page will help you quickly and easily set up a cron job to run every 4 days at 8:30 pm.

The Cron Job/Crontab

To have your task run at this frequency, use the following cron:

30 20 */4 * *

This cron command translates to the following (in Human-Readable format):

“Every 4 days at 8:30 pm.”

What is a Cron Job & Crontab?

A cron job is a task that is scheduled to run at a specified time or interval. Cron jobs are commonly used to automate system maintenance or administration tasks, such as running backups or sending emails.

A crontab is a file that contains commands to be run at specified times. The crontab file is typically edited using the crontab command, which can be used to list, edit, or delete the contents of the file.

Cron Fields

Every cron job uses five fields. Here is an explanation of what each field does in this cron, which runs “every 4 days at 8:30 pm“:

Field 1: (30) indicates that the task will be run at minute 30.

Field 2: (20) indicates that the task will be run at hour 20 (8 pm).

Field 3: (*/4) indicates that the task will be run every 4 days.

Field 4: (*) indicates that the task will be run every month.

Field 5: (*) indicates that the task will be run every day of the week.

 

FUN FACT: If a cron job is not properly configured, it might never execute – so make sure you double-check your settings before setting one up!.

Use Cases

You might want to set up a crontab or cron job to run every 4 days at 8:30 pm for several reasons, including:

• Automatically update a software application
• Perform maintenance tasks on a computer system, such as checking for disk errors
• Generate reports based on usage data
• Send out email notifications about upcoming events or deadlines

Similar Cron Jobs

You might also want to run a crontab:

• every 10 days
• every 7 days
• every 2 days
• every 8 days
• every 2 days at 3:00 am
• every 6 days at 11:00 am

FUN FACT: Cron jobs can be used to automate just about any task that needs to be performed regularly – so get creative and see what you can come up with!.

Wrapping Up

In this article, you learned how to set up a cron job that runs every 4 days at 8:30 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 cron job cheat sheet for a list of hundreds of popular cron jobs.