#!/bin/bash

dirs=(
  /var/lib/dhcp
  /var/log/bind
)

if [[ -e "/var/run/dhcpd.pid" ]]; then
  rm /var/run/dhcpd.pid
fi

for dir in "${dirs[@]}"; do
  mkdir -p "${dir}"
  chmod a+rwX "${dir}"
done

services=(
  "/usr/sbin/named -g"
  "/usr/sbin/dhcpd -f"
)

for service in "${services[@]}"; do
  while true; do
    ${service}
    echo "${service%% *} died: $?"
    sleep 5
  done &
done

while true; do
  sleep 3600
done