Linac4 is an H- linear accelerator, intended to replace Linac2 as injector to the PS Booster (PSB). Brighteness and intensity of the beam from the PSB will double, simplifying the operation, by delivering to the PSB a beam at 160 MeV energy. "Control systems" workpackage of the Linac 4 project will be presented, as well as the present status of the workpackage, both for Linac 4 and 3MeV Test Stand.