Automatically import parameters and export simulation data

Hi! I'd like to do the following. I would like my Comsol model to automatically import simulation parameters (e.g. geometrical dimensions, charge density on a surface, etc.), run an auxiliary sweep and then automatically export the values of a variable for all steps of the sweep. This would be very useful, because I can run Comsol in batch mode but not Matlab.

(As an alternative, if someone can tell me how to run Matlab with Comsol on a linux machine in batch mode, I'm also happy, actually happier than with the previous solution.)