Discussed is the XENIX Operating System for the IBM Personal Computer AT. The operating system incorporates capabilities of a mainframe operating system-ltiusage, multitasking, file management and security, program compilation, and networking. The XENIX shell structure is introduced. Pipes and pipelining are presented. The XENIX file structure is explained and illustrated with examples. Software development and text formatting are treated in detail. The ability to compile C program code developed under XENIX and run it on the IBM Personal Computer Disk Operating System is explained.
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