Command-line utilities are programs that allow users to interact with their computer's operating system through text-based commands. Instead of using a graphical interface, users type commands into a terminal or command prompt to perform tasks such as file management, system monitoring, and software installation. These utilities are often more efficient for experienced users, as they can execute complex operations quickly. Many command-line utilities are built into operating systems like Linux, macOS, and Windows. Examples include grep for searching text, ls for listing files, and ping for testing network connectivity. These tools are essential for system administrators and developers who need to automate tasks or troubleshoot issues.