LTM Script for SSL Certification Expiry Notification

Hi,

we are running LTM 14.1.4 and currently utilise the f5 Checkcert utility, however it is not really suitable for us as we need a script that runs once a day and informs us of certificates that are going to expire in exactly 7 days, and also in exactly 30 days.

Can anyone help please?

Thanks in advance!