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This article is to share with you about the usefulness of cron for Linux system services. The editor thinks it is very practical, so share it with you as a reference and follow the editor to have a look.

Introduction to the cron process:

The cron process provides Linux users with the ability to schedule tasks to execute automatically after a certain time interval. Cron is also usually responsible for the initiation of jobs in the at queue.

The process gets the information from the crontab file, and there is a separate crontab file for each user.

Run the crontab-l command to view a list of arranged commands.

If you want to change the cron information, you must create a crontab file. Crontab has a fixed format, and valid lines include six areas, namely:

Minutes (0-59), hours (0-23), days (1-31), months (1-12), weeks (0-7 minutes 0 and 7 represent Sundays), commands (tasks to run)

Each region may have an asterisk to indicate the entire interval, and each region can also contain a range in the form of xmury, or a list separated by commas.

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