The Cron Job/Crontab
To have your task run at this frequency, use the following cron:
30 20 * * *
This cron command translates to the following (in Human-Readable format):
“Every 1 day at 8:30 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 text file that contains a list of commands to be run at specified times. The commands in the crontab are executed by the cron daemon, which runs on most Unix-like systems.
Every cron job uses five fields. Here is an explanation of what each field does in this cron, which runs “every 1 day at 8:30 pm“:
FUN FACT: Cron is one of the most powerful tools available on a Linux system – use it wisely!.
You might want to set up a crontab or cron job to run every 1 day at 8:30 pm for several reasons, including:
- Automatically send out a daily report
- Automatic backups
- Checking for updates to software
Similar Cron Jobs
You might also want to run a crontab:
- every 10 days
- every 4 days
- every 5 days
- every 7 days
- every 3 days
- every 6 days at 1:00 pm
- every 5 days at 12:00 am
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)..
In this article, you learned how to set up a cron job that runs every 1 day at 8:30 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.