shell编程 测试单个主机或网段主机存活

写shell脚本，使用ping判断指定IP或者IP端内的主机存活。

只接受规定的IP格式输入和IP段输入(例如：192.168.2.88 或 192.168.2.)注意，写IP段的时候后面有个点...脚本简陋...看官将就一下吧；上代码：

#!/bin/bash
read -p "Please input ip:(192.168.0.22) or (192.168.0.)" Ip
Test=`echo $Ip|grep "\<[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}\$"`
Test1=`echo $Ip|grep "\<[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}\.\$"`
#echo "a IP is: $Test"
#echo "IP.is  $Test1"
if [[ -z $Test && -z $Test1 ]];then
        echo "input error!"
        exit 1
elif [[ -n $Test ]];then
        for i in `seq 1 4`
        do 
                Cut=`echo $Test|cut -d"." -f$i`
                if [ $i -eq 1 ];then
                        if [ $Cut -gt 223 -o $Cut -lt 1 ];then
                                echo "input $Test ---->> $Cut invalid"
                                exit 2
                        fi 
                else
                        if [ $Cut -gt 254 ];then
                                echo "input $Test ---->> $Cut invalid"
                                exit 2
                        fi 
                fi 
        done

if ping -c 2 -W 1 $Test &> /dev/null ;then
                        echo "Have $Test"
                else
                        echo "No $Test"
                fi
else
        for i in `seq 1 3`
        do
                Cut=`echo $Test1|cut -d"." -f$i`
                if [ $i -eq 1 ];then
                        if [ $Cut -gt 223 -o $Cut -lt 1 ];then
                                echo "input $Test1 ---->> $Cut invalid"
                                exit 2
                        fi
                else
                        if [ $Cut -gt 254 ];then
                                echo "input $Test1 ---->> $Cut invalid"
                                exit 2
                        fi
                fi
        done
                declare -i Num
                declare -i Fail
                Num=0
                Fail=0
                for i in `seq 1 10`