High Quality Content by WIKIPEDIA articles! The command w on many Unix-like operating systems provides a quick summary of every user logged into a computer, what that user is currently doing, and what load all the activity is imposing on the computer itself. The command is a one-command combination of several other Unix programs: who, uptime, and ps -a. An operating system (OS) is software, consisting of programs and data, that runs on computers and manages the computer hardware and provides common services for efficient execution of various application software.

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