Is there a way to delete all cron backups with vertical? I went and looked at the crontabs root file and only saw one command in there.
So you want to run the prune command in the cron job? The easist way is to create a script named post-backup under .verticalbackup/scripts that runs the prune command.
This is from the User Guide:
Pre-Command and Post-Command Scripts
You can instruct Vertical Backup to run a script before or after executing a command. For example, if you create a script with the name pre-prune under the .verticalbackup/scripts directory, this script will be executed before the prune operation starts. A script named post-prune will be executed at the end of the prune operation. This rule applies to backup, restore, list, check, and prune commands.