To use a command-driven system to communicate with the computer, the user has to type in special command words. DOS, which stands for Disk Operating System, is a very commonly used command-driven user interface.

The main advantage of command driven interfaces is that they can be quick to use as long as the user knows the correct commands.

The main disadvantage of command-driven interfaces is that they are very difficult to use if the user is a beginner or doesn’t know the correct commands.

Command-driven systems can be very unfriendly and confusing for non-computer experts to use.