#!/usr/bin/env bash

function repeat() {
  n="${1}"
  string="${2}"
  printf "%${n}s" | tr " " "${string}"
}

function main() {
  buffer_size="${1}"
  address="${2}"
  filler="$(repeat "${buffer_size}" A)"
  newline="\n"
  printf "%s%b%b" "${filler}" "${address}" "${newline}"
}

main "${@}"