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 0.25
+sleep 0.50
umount /media/sd
trap '' 0
ls -al "$1"