#!/bin/bash set -Eeuo pipefail echo "----- install prerequisite packages -----" apt-get update apt-get -y install bash sudo curl libcurl4-openssl-dev libxml2-utils libxml2-dev libssl-dev python3 python3-pip python3-venv python3-full netcat-openbsd squid sudo service squid stop sudo squid -k shutdown || true sudo rm -v /dev/shm/squid*.shm >/dev/null 2>&1 || true