How to Use v2ray on Ubuntu OS on the client side   First we need to install libqt5gui5 package with below command:   sudo apt-get install libqt5gui5    In the second step, download nekoray with the following command:   sudo wget https://github.com/MatsuriDayo/nekoray/releases/download/2.11/nekoray-2.11-2023-01-13-linux64.zip    After That, unzip the compressed file with the following command:    unzip