Definition - What does Command Language mean?
A command language is a type of interpreted language using a command line structure. Command languages are typically not compiled but are interpreted on the fly. A prominent example is the MS-DOS computer system that controlled earlier personal computers where a command line structure was used to generate user-driven processes.
Techopedia explains Command Language
Command languages have many uses in computer science and the administration of operating systems. They often serve to provide immediate responses to end-user events. For example, a command language for batch processing has specific commands that help to organize and manipulate files. Command languages can be clear-cut ways to implement a set of instructions that might not need the power of a fully compiled, object-oriented language for them to function well.