download_mod(){
  if [[ $- =~ x ]]; then debug=1; set +x; fi
  until "${STMCMD_PATH}" +login "${STEAM_LOGIN}" "${STEAM_PASS}" "${MOD_UP_CMD}" validate +quit; do
    echo -n "\nRetrying after error while downloading.\n"
    sleep 3
  done
  [[ $debug == 1 ]] && set -x
  if [[ ! -d ${WKSHP_PATH}/content/${STMAPPID}/${MOD_ID} ]]; then
    echo "NOT Downloaded! Exiting!"
    exit 1
  fi 
  echo -e "\n"
}

ap 'rm ${PID_FILE}' 1 2 3 6 15