Abstract. Nowadays, it is vital for a computer scientist to be prepared for dif- ferent environments such as new frameworks, different programming paradigms and multiple operational systems. Unfortunately, it is common that freshman students are only used to Microsoft Windows’ Operating System and no proper class or activity is done to revert that. Therefore, our goal is to teach minimal Unix-like skills to first year students through a challenge-based learning ap- proach. To this end, we will use a list of quests with ascendant difficulty levels, without no functionality to reinforce competition between students. Its interface is all web-based with a colored shell looking, so students can get used to Unix command line environment and slowly loose their distrust in a different opera- tional system.