for循环检查linux中IP是否被占用：
for i in 192.168.80.{60..80}
do
ping -c 2 -W 1 $i &> /dev/null
if [ "$?" = "0" ];then
echo $i "已被占用"
else
echo $i "空闲"
fi
done
for循环检查linux中IP是否被占用：
for i in 192.168.80.{60..80}
do
ping -c 2 -W 1 $i &> /dev/null
if [ "$?" = "0" ];then
echo $i "已被占用"
else
echo $i "空闲"
fi
done
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