Ubuntu 16.04 Create a cron.log File To Log crontab Logs

Originally published at: https://www.cyberciti.biz/faq/howto-create-cron-log-file-to-log-crontab-logs-in-ubuntu-linux/

I am a new Ubuntu Linux 16.04 user. How do I verify that my cron job is executing? I am unable to find /var/log/cron.log file. Where is the cron log file on Ubuntu Linux 16.04 LTS server or above?