echo "deb [arch=amd64 signed-by=/usr/share/keyrings/hydr0.gpg] http://pkg.hydr0.com/apt stable main" | sudo tee /etc/apt/sources.list.d/hydr0.list curl https://pkg.hydr0.com/public.key | sudo gpg --dearmour -o /usr/share/keyrings/hydr0.gpg