#!/bin/sh
set -e
trap 'rc=$?; sleep 0.25; umount /media/sd; exit $rc' 0
mount /media/sd

set +e
diff -q >/dev/null -I '^;' /media/sd/JOB.G job.gcode
rc=$?
set -e
case $rc in
0)	echo >&2 '**** WARNING - JOB.G UNCHANGED ****' ;;
1)	;;
*)	exit $rc ;;
esac

cp "$1" /media/sd/JOB.G
sleep 0.25
umount /media/sd
mount -r /media/sd
cmp "$1" /media/sd/JOB.G
sleep 0.50
umount /media/sd
trap '' 0
ls -al "$1"