The UNIX system is designed to hold many programs in
memory. Although the computer can only execute one program at a
time, by swapping between programs frequently it can maintain the
illusion that it is running them simultaneously.
A program that is being executed by the UNIX system gives rise to a
This chapter contains the following information about processes:
What is a process?
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SCO OpenServer Release 6.0.0 -- 03 June 2005