This is an introductory course in Operating Systems. As such, it is intended to cover many of the concepts related to most of the actual Operating Systems. We will cover computer system and operating system structures, processes and threads (concepts of, communication, synchronization and deadlocks), CPU scheduling, memory management, virtual memory, protection, and security. This course will give the students an overview of the Unix OS, basic concepts, usage of the help and man and info commands. Unix file system and basic commands.