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

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

The Cron Job/Crontab

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

30 16 */4 * *

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

“Every 4 days at 4:30 pm.”

What is a Cron Job & Crontab?

A cron job is a time-based task that is set to run at a specific time or interval. These jobs are usually used for automating tasks, such as running backups or sending emails. Cron is the name of the program that enables users to schedule these jobs.

A crontab is a file that contains a list of commands to be executed by the cron daemon. The commands in the crontab are executed at the specified times.

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 4:30 pm“:

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

Field 2: (16) indicates that the task will be run at hour 16 (4 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: Cron jobs are automated processes that run on a schedule..

Use Cases

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

• Checking for updates to a software program
• Running a backup of user data
• Generating reports on website usage statistics
• Sending out reminder emails for upcoming events

Similar Cron Jobs

You might also want to run a crontab:

• every 7 days
• every 10 days
• every 8 days
• every 6 days
• every 4 days
• every 5 days
• every 7 days at 5:00 am
• every 1 day at 11:00 pm
• every 3 days at 10:00 am

FUN FACT: Each user on a system can have their own crontab, and commands in them will be executed as that user..

Wrapping Up

In this article, you learned how to set up a cron job that runs every 4 days at 4:30 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.