For network interface configuration, which command is best used with NetworkManager?

The command best used with NetworkManager for network interface configuration is nmcli. This command-line tool provides a way to manage network settings on systems that utilize NetworkManager, which is commonly used in many Linux distributions for handling network connections.

nmcli allows users to create, manage, and display network connections, making it easy to configure network interfaces without needing to edit configuration files manually. It provides a range of functionalities, such as connecting to Wi-Fi networks, setting static IP addresses, and managing VPN connections.

This command is specifically designed to work seamlessly with NetworkManager's architecture, which is especially beneficial in desktop and server environments where dynamic and complex network configurations are commonly required.

The other commands—networkctl, ifup, and ip link—serve different purposes and are more suited for environments where traditional networking scripts or other network control mechanisms are in place, rather than for configuring networks under the management of NetworkManager.