In the days when computer displays were CRTs, screensavers were essential software to prevent screen burn-in. Nowadays, LCD displays have become mainstream, so screen burn-in is hardly a concern, but ...

While Linux systems install with thousands of commands, bash also supplies a large number of “built-ins”—commands that are not sitting in the file system as separate files, but are part of bash itself ...

Screen is a terminal multiplexer that allows you to manage many processes through one physical terminal. Each process gets its own virtual window, and you can bounce between virtual windows ...