The Cron Job/Crontab
To have your task run at this frequency, use the following cron:
* 11-21 * * *
This cron command translates to the following (in Human-Readable format):
“Every minute between 11:00 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 or automation purposes.
Crontab files are stored in the “/etc/cron*” directories on most Linux systems. Each user has their own crontab file, and there is also a system-wide crontab file that can be used to schedule system tasks.
Every cron job uses five fields. Here is an explanation of what each field does in this cron, which runs “every minute between 11:00 am and 9:00 pm“:
FUN FACT: When troubleshooting issues with cron jobs, it can be helpful to run them manually from the command line – this will allow you to see any error messages that might be generated..
You might want to set up a crontab or cron job to run every minute between 11:00 am and 9:00 pm for several reasons, including:
- wake up at 6:30
- make breakfast
- eat breakfast
- brush teeth
- get dressed for the day
- leave for work/school
- attend classes/work all day
- come home from work/school
- make dinner
- eat dinner
Similar Cron Jobs
You might also want to run a crontab:
- every 21 minutes
- every 23 minutes
- every 10 minutes
- every 9 minutes
- every 4 minutes
- every minute between 12:00 pm and 7:00 pm
- every minute between 4:00 am and 4:00 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 11:00 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.