user@vultr:~$ wget https://raw.githubusercontent.com/thkfighter/linux/master/wireguard_install_ubuntu_20.sh
user@vultr:~$ chmod +x wireguard_install_ubuntu_20.sh
user@vultr:~$ sudo ./wireguard_install_ubuntu_20.sh
user@vultr:~$ wget https://raw.githubusercontent.com/thkfighter/linux/master/wireguard_install_ubuntu_20.sh
user@vultr:~$ chmod +x wireguard_install_ubuntu_20.sh
user@vultr:~$ sudo ./wireguard_install_ubuntu_20.sh