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`

                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....

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