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Linux Essentials - Second Edition
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An operating system, or OS, provides all of the most fundamental features of a computer, at least from a software point of view. An OS enables you to use the computer’s hardware devices, defines the user interface standards, and provides the basic tools that begin to make the computer useful. Ultimately, many of these features trace their way back to the OS’s kernel, which is described in more detail next. Other OS features are owed to additional programs that run atop the kernel, as described later in this chapter.
An OS kernel is a software component that’s responsible for managing various low-level features of the computer, including the following:
When you use a program (say, a web browser), it relies on the kernel for many...
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