install custom fonts on linux system

install-custom-font-prototype.sh

#!/usr/bin/env bash
# -*- coding: utf-8 -*-
###############################################################################
############################################################################### 
# Author: @darksmile92 <https://dev.to/darksmile92/get-emojis-working-on-arch-linux-with-noto-fonts-emoji-2a9/comments>
# Publisher: @t4inha <https://andersonbosa.bio.link>
#
# ! this script isn't working, it's an ideia. if you know how to make it works 
# ! please consider contributing! sz
# ! contribute here: https://gist.github.com/andersonbosa/ba9ed6adfe743343edf73e3576983dd2
#
exit # just for safety, in case someone download this and execute without know.
###############################################################################

set -e

if [[ $(id -u) -ne 0 ]]; then
  echo "Please run as root."
  exit 1
fi

echo "Setting up your custom font '$1'..."
# 1 - install the custom font package
# ???
echo "Input custom filepath:"
read custom_font_filepath

if [[ -z "$custom_font_filepath" ]]; then
  echo "empty path"
  return 1
fi


# 2 - add font config 
# back up first
echo "Backuping to '~/baks/'" &&
  mkdir -p ~/baks &&
  cp -rv /etc/fonts/local.conf ~/baks

# ???
echo """<?xml version='1.0'?>
<!DOCTYPE fontconfig SYSTEM 'fonts.dtd'>
<fontconfig>
 <alias>
   <family>sans-serif</family>
   <prefer>
     <family>Noto Sans</family>
     <family>Noto Color Emoji</family>
     <family>Noto Emoji</family>
     <family>DejaVu Sans</family>
   </prefer> 
 </alias>

 <alias>
   <family>serif</family>
   <prefer>
     <family>Noto Serif</family>
     <family>Noto Color Emoji</family>
     <family>Noto Emoji</family>
     <family>DejaVu Serif</family>
   </prefer>
 </alias>

 <alias>
  <family>monospace</family>
  <prefer>
    <family>Noto Mono</family>
    <family>Noto Color Emoji</family>
    <family>Noto Emoji</family>
    <family>DejaVu Sans Mono</family>
   </prefer>
 </alias>
</fontconfig>

""" >/etc/fonts/local.conf

# 3 - update font cache via fc-cache
fc-cache -v

echo "$1 Font installed! You may need to restart applications like chrome."