What is Unix? Unix is an operating system following open standards. E.g., using TCP/IP in network connection, not other proprietary network protocols. E.g., using SMTP to send mails Vs. proprietary systems such as MS Windows Quick recall: an operating system is a piece of software which: manages various resources such as memory, CPU, display, I/O, printer, … starts / stops other programs. CP010: Introduction to Unix / Linux 3
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Operating Systems An OS acts like a manager. After you power on a computer, OS is the very first software to be executed on the computer. It stays there until you turn the computer off. OS details are studied in another course CSIS0230. When you interact with Unix, you can find more about the purposes of an OS, its nature, and its advantages or disadvantages. CP010: Introduction to Unix / Linux 4