The Cron Job/Crontab
To have your task run at this frequency, use the following cron:
* 6-21 * * *
This cron command translates to the following (in Human-Readable format):
“Every minute between 6:00 am and 9:00 pm.”
What is a Cron Job & Crontab?
A cron job is a time-based task that is set to run at specific intervals. This can be anything from running a script every hour to backing up a database every day. Cron jobs are typically used for maintenance tasks or tasks that need to be performed regularly, such as checking for updates or sending out reports.
A crontab is a file that contains instructions for the cron daemon. The cron daemon is a program that runs in the background and executes tasks at specified times. A crontab file typically contains a list of commands, with each command being executed at a specified time.
Every cron job uses five fields. Here is an explanation of what each field does in this cron, which runs “every minute between 6:00 am and 9:00 pm“:
FUN FACT: The most common way to edit cron jobs is using the crontab command – this stands for “cron table,” and it contains all the information about when your tasks should be executed..
You might want to set up a crontab or cron job to run every minute between 6:00 am and 9:00 pm for several reasons, including:
- checking if a website is up
- running a backup
- generating reports
- cleaning up temporary files
Similar Cron Jobs
You might also want to run a crontab:
- every minute
- every 28 minutes
- every 4 minutes
- every 9 minutes
- every 5 minutes
- every 15 minutes
- every minute between 12:00 am and 7:00 pm
- every minute between 2:00 am and 8:00 pm
FUN FACT: If you want to see what commands are scheduled in your crontab, type: “crontab -l”.
In this article, you learned how to set up a cron job that runs every minute between 6:00 am and 9:00 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 crontab cheat sheet for a list of hundreds of popular cron jobs.