install-wireguard.sh

apt-get update
apt-get upgrade 
apt-get install -y raspberrypi-kernel-headers
echo "deb http://deb.debian.org/debian/ unstable main" | sudo tee --append /etc/apt/sources.list.d/unstable.list
apt-get install -y dirmngr 
apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 8B48AD6246925553
apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 7638D0442B90D010
apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 04EE7237B7D453EC
printf 'Package: *\nPin: release a=unstable\nPin-Priority: 150\n' | sudo tee --append /etc/apt/preferences.d/limit-unstable
apt-get update
apt-get install -y wireguard 
perl -pi -e 's/#{1,}?net.ipv4.ip_forward ?= ?(0|1)/net.ipv4.ip_forward = 1/g' /etc/sysctl.conf