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Cron Job Every 5 Days At 9:30 pm (Crontab)

This page will help you quickly and easily set up a cron job to run every 5 days at 9:30 pm.

The Cron Job/Crontab

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

30 21 */5 * *

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

“Every 5 days at 9:30 pm.”

What is a Cron Job & Crontab?

A cron job is a time-based task that is set to run at a specific interval. For example, a cron job could be set to run every day at midnight in order to update a database or send out nightly emails. Cron jobs are typically used for maintenance tasks that need to be performed regularly.

The crontab is a file that contains instructions for the cron daemon. The crontab is typically edited using the crontab command.

Cron Fields

Every cron job uses five fields. Here is an explanation of what each field does in this cron, which runs “every 5 days at 9:30 pm“:

  • Field 1: (30) indicates that the task will be run at minute 30.
  • Field 2: (21) indicates that the task will be run at hour 21 (9 pm).
  • Field 3: (*/5) indicates that the task will be run every 5 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.
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    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 5 days at 9:30 pm for several reasons, including:

    • Automatically update a software application
    • Perform maintenance tasks on a website
    • Generate reports based on user activity data
    • Send out reminders or notifications to users

    Similar Cron Jobs

    You might also want to run a crontab:

    FUN FACT: If you need to temporarily disable a cron job, you can simply comment out the line in the crontab file that corresponds to that particular task..

    Wrapping Up

    In this article, you learned how to set up a cron job that runs every 5 days at 9:30 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.

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