The first chapter explained how system programs differ from the typical programs that you write in an introductory software development course. In this chapter, we turn our attention to the core concepts that you need to understand, not just for writing programs in general but for writing system programs. I’ll cover several basic principles of programming in a Unix environment as well as those specifically related to system programming. In addition, I’ll explain how to solve certain problems that are common to all projects, such as handling errors, parsing and checking the command line, and obtaining environment ...
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