How do I install CyberGhost VPN on a Linux system?

To install CyberGhost VPN on a Linux system, one begins by opening the terminal and ensuring the system is up to date with the command `sudo apt update && sudo apt upgrade`. After updating, the user must download the CyberGhost VPN configuration files from the official CyberGhost website. Once these files are acquired, it's necessary to install the OpenVPN package using `sudo apt install openvpn` if not already installed. Afterwards, unzip the configuration files in an appropriate directory. Then navigate to the directory where the files were unzipped and run CyberGhost VPN with OpenVPN using a command such as `sudo openvpn --config /path/to/downloaded/config/file.ovpn`. The user will be prompted to enter their CyberGhost username and password. After authentication, the connection should establish, integrating CyberGhost VPN with the Linux system.