Command-line interface
A means of interacting with a computer program where the user (or client) issues commands to the program in the form of successive lines of text (command lines).
Command-line Interface Media
Screenshot of a sample Bash session in GNOME Terminal 3, Fedora 15
Screenshot of Windows PowerShell 1.0, running on Windows Vista
A graphical user interface with icons and windows (GEM 1.1 Desktop)
GNU Octave's GUI with command-line interface
Bourne shell interaction on Version 7 Unix
Prompt of a BBC Micro after switch-on or hard reset
A Teletype Model 33 ASR teleprinter keyboard with punched tape reader and punch