Subject: train travel

Good morning/afternoon/evening We are travelling the following sectors by train in Europe in Aug/september. Brussels/Berlin/Prague/Vienna/Bologna/Como ( not all on the one day). I am aware that in France and Italy one has to check one's tickets in a machine on the platform, to avoid a bollocking by the ticket inspector later in the trip. Is this also the case in Belgium, Germany, Czech republic and Austria? many thanks Margaret in Melbourne in Australia