pinyin in ubuntu 16 18 20 - Serbipunk/notes GitHub Wiki
16 --> fcitx
sudo apt install fcitx fcitx-googlepinyin fcitx-table-wbpy fcitx-pinyin fcitx-sunpinyin
http://ubuntuhandbook.org/index.php/2016/07/2-best-chinese-pinyin-im-ubuntu-16-04/
18 --> ibus
https://blog.csdn.net/rznice/article/details/79841790
xubuntu:
https://blog.csdn.net/zhqh100/article/details/100101094
20 --> ibus
sudo apt-get install fcitx-googlepinyin