Process Management

Process Creation and Termination

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LearnStep 1 of 2

Process Creation

Learning Objectives

•Understand fork and exec
•Learn process termination
•Understand zombie and orphan processes

Lesson Outline

LearnStep 1/2

Process Creation

Process Creation in Unix/Linux

fork() System Call

c

exec() Family

Replace current process image with new program:

c

Zombie and Orphan Processes

Zombie: Child terminated but parent hasn't called wait()
Orphan: Parent terminated before child; adopted by init (PID 1)