A surface where a system is spoken to in typed commands. The oldest interface, and still the most exact.
Initials of 'command line interface': command from Latin commandare (com- together + mandare, to entrust), line from Latin linea (a linen thread, a marked line), interface from Latin inter- (between) + facies (face, form); the oldest way of speaking to a machine, one line at a time.
A surface where a system is spoken to in typed commands — the oldest interface this house keeps, and still among the most exact.