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Running Commands at a Terminal Command Line

A terminal is a text interface where you type a command, press enter, and read what the program prints back. A learner afterwards can open a terminal, run a named command with arguments, and tell a command's output from an error.

Questions this Concept answers

Why does a shell keep track of a current working directory?

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Navigating and Managing Files Using Basic Command Line Commands

The command line is a text-based interface for interacting with a computer's file system, in which a shell interprets typed commands consisting of a program, optional options (flags), and optional ar…