Ubuntu - Cron - Schedule a Cron Job to Run on Every Minutes

Generally, you won’t require any cron job to run every minute.

But this is an excellent example on how you can do this.

* * * * * /scripts/script.sh

All asterisks in the time field of your crontabs mean the script.sh file will run every minute.

You should not try this on servers; else you may disrupt the system very quickly.