setup.sh

#! /bin/bash

echo -ne "
-------------------------------------------------------------------------

  ███████╗████████╗██╗ ██████╗██╗  ██╗██╗   ██╗██╗██████╗ ██╗   ██╗██╗  ██╗
  ██╔════╝╚══██╔══╝██║██╔════╝██║ ██╔╝╚██╗ ██╔╝██║██╔══██╗██║   ██║██║  ██║
  ███████╗   ██║   ██║██║     █████╔╝  ╚████╔╝ ██║██████╔╝██║   ██║███████║
  ╚════██║   ██║   ██║██║     ██╔═██╗   ╚██╔╝  ██║██╔═══╝ ╚██╗ ██╔╝╚════██║
  ███████║   ██║   ██║╚██████╗██║  ██╗   ██║   ██║██║      ╚████╔╝      ██║
  ╚══════╝   ╚═╝   ╚═╝ ╚═════╝╚═╝  ╚═╝   ╚═╝   ╚═╝╚═╝       ╚═══╝       ╚═╝
-------------------------------------------------------------------------
"
    interface=$(ip -o link show | awk -F': ' '{print $2}' | awk -F 'lo' '{print $1}')
    ip=$(hostname --all-ip-addresses | awk '{print $1}'  )
    check=$(route -n | grep 'UG[ \t]' | awk '{print $2}')
    gateway=$(echo $check | awk '{print $1}')

echo -e "                 \e[1;36mInterfaces\e[0m :" $interface
    echo -e "             \e[1;36mCurrent Gatway\e[0m :" $gateway
    echo -e "         \e[1;36mCurrent IP Address\e[0m :" $ip
    echo
    echo -e "  \e[1;31m[*] =================================================== [*]\e[0m	"
    echo
    read -p "           Choose Interface : " int
    read -p "          Change IP Address : " ip
    read -p "            Default Gateway : " gatway
    echo
    echo -e "  \e[1;31m[*] =================================================== [*]\e[0m	"
    rm -rf /etc/netplan/*
    echo "network:
    version: 2
    renderer: NetworkManager
    ethernets:
       $int:
          dhcp4: no
          addresses: [$ip/24]
          gateway4: $gatway
          nameservers:
           addresses: [9.9.9.9, 8.8.8.8]"  >> /etc/netplan/network-manager.yaml
    sudo netplan apply
    echo
    echo -e "    \e[1;31mNow, Your IP Address Is\e[0m :" "\e[1;36m"$ip"\e[0m"
    echo
    read -p " Press [ENTER] to continue and reboot system ... "
    echo
    reboot