How can I configure Ubuntu 16 to start teamviewer automatically?

Steps:

1. Opened /etc/init.d/rc.local

$ sudo vi /etc/init.d/rc.local

2. Added teamviewer's command and parameter below in file rc.local:

teamviewer passwd ubuntu

3. Restart system

4. Examine if teamviewer daemon can work as expected:

$ systemctl status teamviewerd
● teamviewerd.service - TeamViewer remote control daemon
   Loaded: loaded (/etc/systemd/system/teamviewerd.service; enabled; vendor preset: enabled)
   Active: active (running) since 三 2018-08-15 11:00:14 CST; 1min 25s ago
  Process: 1555 ExecStart=/opt/teamviewer/tv_bin/teamviewerd -d (code=exited, status=0/SUCCESS)
 Main PID: 1567 (teamviewerd)
   CGroup: /system.slice/teamviewerd.service
           └─1567 /opt/teamviewer/tv_bin/teamviewerd -d

$ ps aux | grep -i teamviewer
root      1567  0.3  0.3 1181612 12212 ?       Sl   11:00   0:00 /opt/teamviewer/tv_bin/teamviewerd -d
u         1890  0.3  2.2 1990224 88556 ?       Sl   11:00   0:00 /opt/teamviewer/tv_bin/TeamViewer

Afterwards, you can remote control host via Partner ID and password which is ubuntu in this example.