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#!/bin/bash
MODULE=hello
DEVICE=helloc
MODE=664
# invoke insmod with all arguments and use a pathname
# as newer modutils don't look into . by default
/usr/bin/insmod ./${MODULE}.ko $* || exit 1
# remove stale nodes
rm -f /dev/${DEVICE}[0]
MAJOR=$(awk "\$2 == \"$DEVICE\" {print \$1}" /proc/devices)
mknod /dev/${DEVICE}0 c $MAJOR 0
# give appriopriate permissions
GROUP=staff
grep -q '^staff' /etc/group || GROUP=wheel
chgrp $GROUP /dev/${DEVICE}0
chmod $MODE /dev/${DEVICE}0
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