Shell Programming Examples
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Ping all hosts in a subnet
subnet=”141.93.169
i=1
while [ $i -lt 255 ]
do
ping ${subnet}.${i} 2 1>/dev/null 2>&1
if [ $? -ne 0 ] ; then
echo "${subnet}.${i},down"
else echo "${subnet}.${i},up"
fi
i=$(expr $i + 1 )
done