upnpc port forwarding script

#!/bin/bash
######################################################################
#Copyright (C) 2021  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 <http://www.gnu.org/licenses/>.
######################################################################

echo "Getting Server Info..."
server="$(upnpc -l | grep desc:|awk '{print $2}')"

ip="$(ip a|grep "inet "|awk '{print $2}'|cut -d\/ -f1|tail -n1)"

read -p "Interal Port: " internal
read -p "External Port: " external
read -p "Description: " description


upnpc -u $server -d $external tcp
echo "upnpc -u $server -a $ip $internal $external tcp"
echo ": $(date +%s):0;upnpc -u $server -a $ip $internal  $external tcp" > $HOME/.zsh_history
upnpc -u $server -a $ip $internal  $external tcp

echo -e "\n\nTo delete port run:\nupnpc -u $server -d $external tcp"
echo ": $(date +%s):0;upnpc -u $server -d $external tcp" > $HOME/.zsh_history