Working on a *nix system is no piece of cake. Especially when you are used to Graphic interface of ‘windows’. The world where mouse is the king.
Here is a list of most used / most discussed / most important *nix commands. Mastering this will surely get your confidence level high in the black background and white characters’ world !!
My experience says that for starters in UNiX / LiNuX , these commands are enough to get you in smoothly !