#!/bin/bash

TMP_FILE=$(mktemp)

function cleanup() {
   rm -f "${TMP_FILE}"
}

trap cleanup EXIT

if [ -e "/dev/ttyUSB3" ]; then
        chat -f /usr/share/bm818-tools/volte_check_fw.chat < /dev/ttyUSB3 > /dev/ttyUSB3 2> "${TMP_FILE}"

        cat "${TMP_FILE}"

        CHECK=$(awk '{ print $6 }' "${TMP_FILE}" | tr "," "\n" )
else
	CHECK="Modem not found. Is the killswitch engaged?"
fi

echo "$CHECK"

