What does the CLI Stand for? | Intro to the CLI Part 1

Command-line interfaces, or CLIs, let users interact with operating systems and applications by entering text commands, offering direct control over files, tools, configuration, and automation alongside graphical user interfaces. The material presents CLI knowledge as an important skill for developers and DevOps professionals because many development tools, including Git and CI/CD utilities, are command-based and because scripts can automate repetitive tasks at scale. It distinguishes terminals, which provide input and output access to a computer, from shells, which expose operating system services, and CLIs, which interpret text commands; common shells include Bash and Zsh. It also traces terminal use from punch cards and early typewriter-like devices through Unix standardization, the Bourne shell, open-source GNU software, and the widespread adoption of Bash across Unix-like systems and Windows Subsystem for Linux. While GUIs remain valuable for visualization and accessibility, command lines can expose functions unavailable or cumbersome in menus, and modern systems and backup practices generally reduce the risk of accidental damage while users learn.

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