BASH Get Favicon of a site

#!/bin/bash
######################################################################
#Copyright (C) 2022  Kris Occhipinti
#https://filmsbykris.com

#This program is free software: you can redistribute it and/or modify
#it under the terms of the GNU General Public License as published by
#the Free Software Foundation, either version 3 of the License, or
#(at your option) any later version.

#This program is distributed in the hope that it will be useful,
#but WITHOUT ANY WARRANTY; without even the implied warranty of
#MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#GNU General Public License for more details.

#You should have received a copy of the GNU General Public License
#along with this program.  If not, see .
######################################################################

read -p "Ener URL: " url
[[ $url ]] || exit 1

tmp="/tmp/favicon_get.html"

wget -k -qO "$tmp" "$url"
icon="$(cat "$tmp"|tr "<" "\n"|grep 'rel="'|grep "icon"|sed 's/href=/\nhref=/g'|grep href|head -n1|cut -d\" -f2)"
echo "$icon"