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Process identifier

<operating system> (PID) An integer used by the Unix kernel to uniquely identify a process.

PIDs are returned by the fork system call and can be passed to wait() or kill() to perform actions on the given process.

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procedure process Process and Experiment Automation Real-Time Langua Process Design Language 2 process ID	fork light-weight process parent process PID process	processing processor Processor Direct Slot processor farm processor time