| This chapter is an introduction to UNIX
processes and process management. All program execution and tasks
performed on a UNIX system are accomplished with processes that are
managed by the operating system kernel. You will learn how to
determine which processes are currently running and interpret the
process information displayed with the ps
(process status) command. You will be able to identify Parent and
Child processes and use Process Identifiers to terminate unwanted or
unresponsive processes. An understanding of processes is critical to
understanding the inner workings of the UNIX operating system. The
concepts of virtual memory and physical memory, swap files, and paging
are also introduced.
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