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    Shell正则表达式验证IP地址

    作者:admin 时间:2021-07-05 18:34

    本机多个IP

    复制代码 代码如下:

    ifconfig | awk '/inet/{print $2}' | awk -F: '{print $2}' 

    首先,先用这个来着

    复制代码 代码如下:

    CheckIPAddress()       
    {
            echo $1 > /tmp/tmpserverip
            echo $1 |grep "^[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}$" > /dev/null
            if [ $? = 1 ];    then
                    return 1
            else
                    a=$(cut -d. -f1 /tmp/tmpserverip)
                    b=$(cut -d. -f2 /tmp/tmpserverip)
                    c=$(cut -d. -f3 /tmp/tmpserverip)
                    d=$(cut -d. -f4 /tmp/tmpserverip)
       
                    for loop in $a $b $c $d
                    do
                            if [ $loop -ge 255 ] || [ $loop -le 0 ]; then
                                    return 2
                            fi
                    done
            fi
               
            return 0
    }

    最初的时候,参考过下面的这些

    复制代码 代码如下:

    grep "^([01]?\d\d?|2[0-4]\d|25[0-5])\.([01]?\d\d?|2[0-4]\d|25[0-5])\.([01]?\d\d?|2[0-4]\d|25[0-5])\.([01]?\d\d?|2[0-4]\d|25[0-5])\.$"

    输入ip,检查其是否满足的ip书写规范,即不能大于255,不能有字母,和其他标点,参考网上的,自己搞了个如下,做个标记!@

    复制代码 代码如下:

    echo -n 'Enter the Server-ip:'
            read BISSip
            echo $BISSip > /tmp/tmpserverip
            echo $BISSip|grep "^[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}$" > /dev/null
            num=$?
            if [ $num = 1 ]
            then
                    echo error ip,please enter correct
          
            else
      {
            a=$(cut -d. -f1 /tmp/tmpserverip)
            b=$(cut -d. -f2 /tmp/tmpserverip)
            c=$(cut -d. -f3 /tmp/tmpserverip)
            d=$(cut -d. -f4 /tmp/tmpserverip)
      
            {
                    if [ $a -ge 255 ]||[ $a -le 0 ]
                    then
                            echo a:error ip
                    else
                            echo 1 > /tmp/jack
                     fi
            }
      
            {
                    if [ $b -ge 255 ]||[ $b -lt 0 ]
                    then
                            echo b:error ip
            else
                            echo 1 >>/tmp/jack
            fi
      
            }
       
            { if [ $c -ge 255 ]||[ $c -lt 0 ]
                     then
                             echo c:error ip
                    else
                            echo 1 >>/tmp/jack
                        fi
             }
      
             { if [ $d -ge 255 ]||[ $d -le 0 ]
                    then
                            echo d:error ip
                    else
                            echo 1 >> /tmp/jack
                    fi
             }

    jsjbwy
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