In this chapter, we examine the structure and representation of a process in Linux. If we think of a process as something that performs a task for an ordinary nonprivileged user such as you or me but that is managed by the kernel, it leads to two very different views of a process. One is the way that nonprivileged users see it, and the other is the way that the kernel represents it. We begin by exploring the user-visible manifestation of a process. After that, we’ll look at it from the kernel’s perspective.
More specifically, we start by examining the kinds of relationships that can exist among sets of processes. Since ...
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