Can we run cron job for every second?

It’s not possible to run cron in every second but we can run cron in every second using this method, we use a sleep command before the echo date. Cron – Cron is command name that runs scheduled action using the crond daemon.

How can I specify time in cron considering year?

How can I specify time in CRON considering YEAR?

1. Workaround: run every year and move the year logic to the script.
2. completely agree with u, too many things may happen.
3. There is another usecase for using YEAR: If you only want execute a Job once.

Is cron job safe?

3 Answers. If you have secured access to the script sufficiently and made sensible precautions, running something from roots crontab is not usually a security risk. But don’t run a script as root that a non root user can edit or overwrite. This applies to jobs run from cron as well as interactively.

How do I run a cron job more than once per minute?

There is no mechanism to run a cron job any more frequently than one minute. This means you are limited to running your cron job once per minute. One way you accomplish this is with a sleep in your script. For example, something like this: The problem you can run into is timing issues since the command will take time to complete.

Why don’t I run a shell script to execute a cron job?

Why don’t you run a shell script which runs your command, like: As someone else said, cron has a granularity of 1 minute. You can’t exec cron with increment less than minute. You can search for other schedulers. Or consider to create daemon which will have internal scheduler for such interval

How to sleep 30 seconds after a payload is finished?

The trick is to use a sleep 30 but to start it in the background before your payload runs. Then, after the payload is finished, just wait for the background sleep to finish. If the payload takes n seconds (where n <= 30 ), the wait after the payload will then be 30 – n seconds.