The Cron Job/Crontab
To have your task run at this frequency, use the following cron:
* 0-20 * * *
This cron command translates to the following (in Human-Readable format):
“Every minute between 12:00 am and 8:00 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 can 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 on a regular basis.
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 minute between 12:00 am and 8:00 pm“:
FUN FACT: One common use for cron jobs is to send out email reminders or notifications based on certain events (such as an upcoming deadline)..
You might want to set up a crontab or cron job to run every minute between 12:00 am and 8:00 pm for several reasons, including:
- A website that gets most of its traffic during the day could use this cron job to run a daily backup at night.
- An online forum that is busiest during the daytime could use this cron job to send out a nightly digest of new posts.
- A blog that is updated frequently could use this cron job to generate a daily RSS feed.
Similar Cron Jobs
You might also want to run a crontab:
- every 29 minutes
- every 24 minutes
- every 5 minutes
- every 20 minutes
- every 11 minutes
- every 10 minutes
- every minute between 4:00 am and 12:00 pm
- every minute between 2:00 pm and 9:00 pm
- every minute between 5:00 am and 5:00 pm
FUN FACT: You can use cron to schedule just about anything!.
In this article, you learned how to set up a cron job that runs every minute between 12:00 am and 8:00 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.