* Insync
# apt-key adv --keyserver keyserver.ubuntu.com --recv-keys ACCAF35C
# nano -w /etc/apt/sources.list.d/insync.list
+deb http://apt.insynchq.com/ubuntu xenial non-free contrib
# apt-get update
# apt-get install insync-headless
$ insync-headless --version
1.3.14.36131