Ubuntu 15.04 systemctl: command not found

I am currently trying to install Syncthing and have it start automatically.

I am following the guide Starting Syncthing Automatically – Using systemd.

I have a file called "[email protected]" saved at /etc/systemd/system. So basically I am trying to achieve autostart by using systemd.

The command to enable it is:

systemctl enable [email protected]

But this gives me the error:

sudo: systemctl: command not found

From what I know since 15.04 systemd is the replacement for upstart. But why is systemctl missing? Can I just install it and hope for the best?

$ dpkg-query -S /bin/systemctl
systemd: /bin/systemctl