(Shell Script) Example

cat /sys/plx-ll/link_status > link.log
i=0
while [ "$i" -lt "500" ]
do
ifconfig plxnic0 down
sleep 5
ifconfig plxnic0 up
sleep 5
cat /sys/plx-ll/link_status > link_now.log
diff link.log link_now.log > /dev/null 2>&1
if [ $? -eq 0 ]
then
echo "Round$i : Files are the same"
else
echo "Round$i : Files are different"
exit
fi
i=$(($i+1))
done