Enable Color Emoji for Linux (any program, including browsers and terminal)

10-emoji.conf

<?xml version="1.0"?>
<!DOCTYPE fontconfig SYSTEM "fonts.dtd">
<fontconfig>
 <match>
  <test name="family"><string>monospace</string></test>
  <edit name="family" mode="prepend" binding="weak">
  <string>Noto Color Emoji</string>
  </edit>
 </match>
 <match>
  <test name="family"><string>sans-serif</string></test>
  <edit name="family" mode="prepend" binding="weak">
   <string>Noto Color Emoji</string>
  </edit>
 </match>
 <match>
  <test name="family"><string>serif</string></test>
  <edit name="family" mode="prepend" binding="weak">
   <string>Noto Color Emoji</string>
  </edit>
 </match>
 <match>
  <test name="family"><string>Apple Color Emoji</string></test>
  <edit name="family" mode="prepend" binding="weak">
   <string>Noto Color Emoji</string>
  </edit>
 </match>
</fontconfig>

main.sh

# This script will help you setup emoji support in all the programs including browsers, terminal, etc

# install Noto Font
pacman -S noto-fonts-emoji                # for arch-based 
apt-get install fonts-noto-color-emoji    # for ubuntu

# copy config from this gist your profile config directory
cp 10-emoji.conf $XDG_CONFIG_HOME/fontconfig/conf.d/10-emoji.conf

# regenerate font cache
fc-cache -f -v

# open this url in your browser
https://eosrei.github.io/emojione-color-font/full-demo.html