#!/bin/sh
# A shortcut to print the serial number of this device.

serial=$(cat /etc/serial)
if [ -n "$serial" ]; then
  echo "$serial"
  exit 0
fi

serial=$(hnvram -qr 1ST_SERIAL_NUMBER 2>/dev/null)
if [ -n "$serial" ]; then
  echo "$serial"
  exit 0
fi
serial=$(hnvram -qr SERIAL_NO 2>/dev/null)
if [ -n "$serial" ]; then
  echo "$serial"
  exit 0
fi

exit 1