command line

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A line on a computer terminal at which commands are typed.
• noun A string of characters that constitute such a command.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A shell, a command line interface; usually used with the definite article.
• noun computing The text prompt presented to the user in a command line interface.
• noun A line of text that is entered at such a prompt.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun commands that a user types in order to run an application