Portal 2 ’s very best gag comes at the start of the game, in its tutorial stages, and spins Portal ’s game-design satire into ...

Software engineering is the branch of computer science that deals with the design, development, testing, and maintenance of software applications. Software engineers apply engineering principles and ...

Many features in this guide work in other shells too. History expansion comes from csh. Keyboard shortcuts come from the readline library. Parameter expansion follows POSIX standards. Some features ...