What is Unix commands?

Unix commands are a set of utilities used to interact with the Unix operating system and its derivatives (like Linux and macOS) via a command-line interface. They are used for a wide range of tasks, including file management (creating, deleting, renaming, moving files and directories), process management (starting, stopping, monitoring processes), system administration (managing users, permissions, and system resources), and software development (compiling, debugging, and running programs). Common examples include 'ls', 'cd', 'mkdir', 'rm', 'cp', 'mv', 'grep', 'awk', and 'sed'.