Question: What is a command-line interpreter (CLI)? What is the main function of a CLI? Must all OSes use a CLI? In the absence of a

What is a command-line interpreter (CLI)? What is the main function of a CLI? Must all OSes use a CLI? In the absence of a CLI, which option could solve the interface need?

What is the added value of an OS? List at least 4 user-values. Be brief.

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