ubuntu 16.04 setup, hostname Gnome, language fcitx Classic GNOME Flashback
change hostname
http://ubuntuhandbook.org/index.php/2016/06/change-hostname-ubuntu-16-04-without-restart/
gksudo gedit /etc/hostname /etc/hosts
GnameDesktop
https://www.hiroom2.com/2017/05/02/ubuntu-16-04-%E3%83%87%E3%82%B9%E3%82%AF%E3%83%88%E3%83%83%E3%83%97%E7%92%B0%E5%A2%83%E3%82%92unity%E3%81%8B%E3%82%89gnome%E3%81%B8%E7%A7%BB%E8%A1%8C%E3%81%99%E3%82%8B/
sudo apt install -y ubuntu-gnome-desktop
http://www.debugpoint.com/2016/04/install-classic-gnome-flashback-in-ubuntu-16-04-replacing-unity/
How to Install Classic GNOME Flashback
sudo apt-get update
sudo apt-get install gnome-session-flashback