Free Programming Tutorials

“>It is time to dig deeply into the UNIX kernel and look more closely at the basic concepts UNIX supports, namely, processes, memory, the file system, and input/output. These notions are important because the system calls—the interface to the operating system itself—manipulate them. For example, system calls exist to createprocesses, allocate memory, open files, and do I/O.Unfortunately, with so many versions of UNIX in existence, there are somedifferences between them. In t 
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