What is ProtonVPN's command line interface (CLI)?

ProtonVPN's command line interface (CLI) is a tool allowing users to interact with the ProtonVPN service directly through the command prompt or terminal without a graphical user interface. It offers advanced users and system administrators the ability to configure and maintain their VPN connections using text commands that can be scripted and automated. The CLI offers functionalities such as connecting to servers, disconnecting, configuring settings, and displaying connection status. This interface is particularly handy for those who prefer working in a shell environment or require VPN management in headless or server setups where graphical user interfaces are not available or practical.