The software world
CLI
command-line interface
A Command-Line Interface — running a program by typing commands instead of clicking buttons. The
terminal is where you do it. It looks bare, but it's precise, fast, and easy to automate. Why it matters
Part of The app vs the command line → Claude Code has a CLI, but the friendly front door is the GUI: Claude Code Desktop. The terminal is the optional Power Track for scripting and automation.
see also