一个shell写的ping函数

复制代码

代码如下:

#!/bin/bash

#2013-01-06 14:00:00 wanggy exp

#note:ping monitor

set -u

#set -x

ping_fun()

{

    d_network=192.168.1

    echo -n “input the network(default $d_network):”

    read network

: ${network:=$d_network}

    echo “network:$network”

    d_hostip_beg=1

    d_hostip_end=254

echo -n “input the hostip(default $d_hostip_beg $d_hostip_end):”

    read hostip_beg hostip_end

    : ${hostip_beg:=$d_hostip_beg}

: ${hostip_end:=$d_hostip_end}

    echo “hostip_beg:$hostip_beg”

    echo “hostip_end:$hostip_end”

    count=3

for ((hostip=$hostip_beg;hostip<=$hostip_end;hostip++));do

            host=$network.$hostip

            echo “开始ping检测$host”

ping -c $count $host &>/dev/null

                    if [ $? = 0 ];then

                            echo “$host is up”

                    else

                            sleep 3

ping -c $count $host &>/dev/null

                            if [ $? = 0 ];then

                                    echo “$host is up”

                            else

                                    echo “$host is down”

                            fi

                    fi

            done

    #echo “执行完毕”

    exit 0

    }

    main()

    {

echo “—-开始执行ping程序—-“

    ping_fun

    }

    main

    exit 0