#!/bin/bash
echo "deb http://archive.ubuntu.com/ubuntu bionic main universe" > /etc/apt/sources.list
echo "deb http://archive.ubuntu.com/ubuntu bionic-security main universe" >> /etc/apt/sources.list
echo "deb http://archive.ubuntu.com/ubuntu bionic-updates main universe" >> /etc/apt/sources.list
apt update
apt install dialog