I did a yum update yesterday and this night i received an email stating the following :
From: “(Cron Daemon)” <>
Subject: Cron root@cloud /sbin/e-smith/backup-data-wrapper backup-data
Date: 29 August 2019 at 03:06:05 GMT+2
/etc/backup-data.hooks/backup-clean-files: line 48: [: *: integer expression expected
The backup (restic to NFS) succeeded however.