Unix processes

Last revision August 2, 2004

A process is an instance of a program, with its needed environment of file connections, etc., running in the CPU. In Unix, every command or program you run becomes a separate process that is or can be independent of every other one, unlike some systems where you have a single interactive environment that can only execute programs one at a time sequentially. Processes can also be combined in interesting ways to do complicated tasks.

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