Unix-like systems are operating systems that behave in a manner similar to the original Unix system. They share common design principles and features, making them popular in both server and desktop environments. Examples include Linux, BSD, and macOS, each offering unique functionalities while adhering to Unix standards. These systems are known for their stability, security, and flexibility, which makes them a preferred choice for developers and system administrators. The command-line interface and powerful scripting capabilities allow users to automate tasks efficiently, enhancing productivity in various computing environments.