Setting up cron job

Ubuntu 22.04
Webmin version 2.013
I have created a cron job back up as follows-
innobackupex --user=root --password=accession /media/usb0/Backup/mysql && eject /media/usb0.
This works ok as long as the external drive USB0 is connected . If the drive is not connected the backup is written to my operating system drive and is filling it up.
I found a possible solution on the inertnet as follows
if ! mount grep -q “/media/backups”; then
  echo "/media/backups not mounted"
  exit 1


However I do not know how to incorporate this into the cron job . Help would be appreciated
Please note that there is a pipe symbol between mount and grep but this editor does not seem ro like it.