wget https://git.io/vpn -O openvpn-install.sh && bash openvpn-install.sh or wget https://raw.githubusercontent.com/Angristan/openvpn-install/master/openvpn-install.sh -O centos7-vpn.sh original refrence : https://github.com/Nyr/openvpn-install and https://github.com/angristan/openvpn-install