Install Traditional Chinese Input (IBUS) ---- CangJie, ZhuYin, ChewIng (for Ubuntu & CentOS)

For Ubuntu

Step 1: Install input method you like
    sudo apt-get install ibus-table-cangjie-big#倉頡輸入法，第三代和第五代一起裝
    sudo apt-get install ibus-zhuyin #注音輸入法
    sudo apt-get install ibus-chewing #新酷音輸入法

Step 2: Reboot IBUS to reload input method
    ibus restart

Step 3: Open Ubuntu desktop / System Setting / Text Entry, Add Input Source
    a. Search "cangjie" and add it
    b. Search "zhuying" and add it
    c. Search "chewing" and add it


For CentOS 7

Step 1: install ibus
  sudo yum install -y ibus ibus-table-chinese-array

Step 2: run ibus-setup and exit (in order to kick off ibus)
  ibus-setup

Step 3: restart ibus
  ibus restart

Step 4: Check ibus input method
  ibus list-engine | egrep -A 3 Chinese

Step 5: Setup ibus (to be continued)
  ibus-setup



Refer to:
  1. http://it.livekn.com/2016/05/ubuntu-1604-ibus.html
  2. https://ephrain.net/linux-%E5%9C%A8-centos-7-%E4%B8%8A%E5%AE%89%E8%A3%9D-ibus-%E4%BD%BF%E7%94%A8%E7%9A%84%E8%A1%8C%E5%88%97%E8%BC%B8%E5%85%A5%E6%B3%95/