Run a script or command on start up on Ubuntu using cron
https://pupli.net/2017/12/11/run-a-script-or-command-on-start-up-on-ubuntu-using-cron/
Scheduled backup MongoDB database using mongodump and cron
https://pupli.net/2019/07/04/scheduled-backup-mongodb-database-using-mongodump-and-cron/
Run every 1 hour on Ubuntu using cron
https://pupli.net/2019/08/13/run-every-1-hour-on-ubuntu-using-cron/