shell编程 测试单个主机或网段主机存活(2)

do
                        if ping -c 1 -W 1 ${Test1}$i &> /dev/null ;then
                                echo "Have ${Test1}$i"
                                Num=$((Num+1))
                        else
                                Fail=$((Fail+1))
                                echo "No ${Test1}$i"
                fi
        done
        echo "Host online have $Num ." 
        echo "Host no online have $Fail ."

最后一个for循环，我嫌多，只写了10个值，有兴趣的哥们，自己改 seq 1 10改成1 254即可...还有关于a类b类c类网，由于本人网络方面知识的欠缺，所以判断的值，估计挺不正确的，列位就谅解一下吧....