echo "deb https://apt.syncthing.net/ syncthing stable" | sudo tee /etc/apt/sources.list.d/syncthing.list curl -s https://syncthing.net/release-key.txt | sudo apt-key add - printf "Package: *\nPin: origin apt.syncthing.net\nPin-Priority: 990\n" | sudo tee /etc/apt/preferences.d/syncthing sudo apt-get update sudo apt-get install syncthing # 필요할 경우 sudo apt-get install apt-transport-https