What is the primary purpose of the command 'nmcli'?

The primary purpose of the command 'nmcli' is to manage network connections. This command-line tool is specifically designed to allow users to create, modify, delete, view, and run various network-related tasks, all managed through the NetworkManager service.

With 'nmcli', administrators can handle specific functions such as connecting to wireless networks, configuring static or dynamic IP addresses, and monitoring the status of network interfaces. It provides a powerful interface that is especially useful in environments where a graphical user interface is not available or for automation tasks in scripts.

The other options pertain to different areas of system administration. Managing users and groups focuses on user account management rather than networking. Interacting with file systems involves commands related to file operations and directories, which are distinct from network management tasks. Configuring system services relates to managing how processes and services are started or stopped in the operating system, separate from network connection management. Therefore, 'nmcli' clearly stands out as the tool dedicated specifically to managing network connections.