Cron Job Every Uneven Minute (Crontab)

This page will help you quickly and easily set up a cron job to run every uneven minute.

The Cron Job/Crontab

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

1-59/2 * * * *

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

“Every uneven minute.”

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 commonly used to automate system maintenance or administration 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.

Cron Fields

Every cron job uses five fields. Here is an explanation of what each field does in this cron, which runs “every uneven minute“:

Field 1: (1-59/2) indicates that the task will be run every two minutes.

Field 2: (*) indicates that the task will be run every hour.

Field 3: (*) indicates that the task will be run every day of the month.

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 you want to edit your personal crontab, just type: “crontab -e” at the command prompt..

Use Cases

You might want to set up a crontab or cron job to run every uneven minute for several reasons, including:

• Run a backup script every minute
• Automatically update software installed on a machine
• Generate reports based on system usage data

Similar Cron Jobs

You might also want to run a crontab:

• every uneven minute
• every morning
• every weekday
• every weekend
• every year
• every day/night at midnight
• every morning
• every weekday

FUN FACT: Cron is one of the most versatile tools in a Linux administrator’s toolbox..

Wrapping Up

In this article, you learned how to set up a cron job that runs every uneven minute. 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.