Automatically create self signed certificate

Hello

We have four data domain systems in our environment. Every 3 months or so we have to renew the certificates by creating a new self signed one. Is there any way to make the system (like a cronjob) run the code below every 3 months or so?

adminaccess disable http

adminaccess disable https

adminaccess certificate generate self-signed-cert

adminaccess enable http

adminaccess enable https

Thanks in advance