Takes mongodump of all DBs of server everyday at 3am
Uses cronjob : 0 3 * * * /backups/mongo-backups.sh
To make changes to the script:
sudo nano /backups/mongo-backups.sh
To make changes to cronjob:
Run sudo crontab -e to open the editor and then make changes accordingly.
Note: Mess with this only if you know what you're doing!