RealVNC VNC Viewer is a powerful tool that allows you to remotely access and control your Raspberry Pi from another computer. This is particularly useful for managing your Raspberry Pi without needing a dedicated monitor, keyboard, or mouse. This article will guide you through the process of installing RealVNC VNC Viewer on your Raspberry Pi using the command line.

Examples:

1. Update Your System: Before installing any new software, it's a good practice to update your system to ensure all existing packages are up-to-date. Open the terminal on your Raspberry Pi and run the following commands:

   sudo apt-get update
   sudo apt-get upgrade

2. Install RealVNC VNC Viewer: To install RealVNC VNC Viewer, use the following command:

   sudo apt-get install realvnc-vnc-viewer

   This command will download and install the VNC Viewer package from the official repositories.

3. Enable VNC Server: RealVNC VNC Viewer requires a VNC server to be running on your Raspberry Pi. If you haven't already enabled the VNC server, you can do so via the Raspberry Pi Configuration tool:

   sudo raspi-config

   Navigate to Interfacing Options -> VNC and select Yes to enable the VNC server.

4. Start the VNC Server: If the VNC server is not already running, you can start it manually with the following command:

   sudo systemctl start vncserver-x11-serviced.service

5. Connect to Your Raspberry Pi: Once the VNC server is running, you can use RealVNC VNC Viewer on another computer to connect to your Raspberry Pi. Open VNC Viewer, enter the IP address of your Raspberry Pi, and connect. You will be prompted to enter the username and password for your Raspberry Pi.

6. Accessing VNC Viewer: If you need to access VNC Viewer directly on your Raspberry Pi, you can launch it from the terminal with:

   vncviewer

   This will open the VNC Viewer interface where you can manage your remote connections.