CLI

networkingprogramming

Stands for: Command-Line Interface

A text-based interface where you type commands to control software.

A Command-Line Interface accepts typed commands rather than mouse clicks. On network gear and servers it is the primary control surface, scriptable and precise in a way graphical interfaces are not.

A command-line interface is text in and text out, which is why it composes. The output of one command becomes the input of another, work becomes a script, and a script becomes something that can be reviewed, versioned and run identically a thousand times.

That is the property graphical interfaces cannot offer and the reason infrastructure work remains predominantly textual. The trade is discoverability: a graphical interface shows you what is available, and a command line requires you to know. That asymmetry is why the best tools provide both, and why the most useful thing a CLI can do for a newcomer is have genuinely good help output and error messages that name the correction.

Also known as: cli

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