Command line

From Mandrivausers Wiki

A command line interface or CLI is a method of interacting with an operating system using a command line interpreter, simply called shell. This command line interpreter may be a text terminal, terminal emulator, or remote shell client.

User types specific commands into the shell, a shell interprets them and applies. For example, if you open a terminal emulator like KDE's Terminal, type there "uname -a" and hit enter, the system will display the version of Linux kernel you are using.