The Cron Job/Crontab
To have your task run at this frequency, use the following cron:
* 4-16 * * *
This cron command translates to the following (in Human-Readable format):
“Every minute between 4:00 am and 4:00 pm.”
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.
A crontab is a table or list of commands that are scheduled to run at specified times. The commands in a crontab file (also called a “cron table”) are normally executed by the cron daemon, which runs in the background and executes these commands automatically.
Every cron job uses five fields. Here is an explanation of what each field does in this cron, which runs “every minute between 4:00 am and 4:00 pm“:
FUN FACT: If you need to delete a cron job, simply remove the corresponding line from the crontab file and save your changes..
You might want to set up a crontab or cron job to run every minute between 4:00 am and 4:00 pm for several reasons, including:
- A cron job to run a daily backup at 4:00 am
- A cron job to check for system updates at 4:00 pm
- A cron job to generate a report of system usage statistics at 16:00
Similar Cron Jobs
You might also want to run a crontab:
- every minute
- every 6 minutes
- every 21 minutes
- every 12 minutes
- every 16 minutes
- every minute between 8:00 pm and 9:00 pm
- every minute between 1:00 pm and 5:00 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 4:00 am and 4:00 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.