Update database by commandline?

I’m using CIS on some PC, which are not connected to the internet. Until now I’m downloading the new database to a USB pen and install it on each PC manually.
Here my question:
Is there any way to automate this with a short script? Exists an API interface, that can be used?
I’ve tried to automate it with ControlCommand-functions, but the controls on the CIS UI are not accessible.

Thanks in advance