Command-Line Interface (CLI) is a text-based user interface used for entering commands directly to a computer system. Coursera's CLI catalogue teaches you how to effectively navigate, manage files and directories, and perform operations using a command line. You'll gain practical skills such as scripting, automation, and understanding command syntax. This foundation will also equip you with the advanced CLI techniques needed for system administration, cybersecurity, network management, and software development. As you master the CLI, you'll unlock a powerful tool that can increase productivity, enhance control, and unlock a deeper understanding of computer systems.