Linux shell验证IP 端口是否通并获取验证结果(telnet nc )，linux获取telnet ip port的结果

港控/mmm° 2023-07-21 05:25 8阅读 0赞

原文  
[Linux shell 批量验证端口连通性][Linux shell]

验证原理就是使用telnet和nc来进行验证，测试下来感觉nc比较好用。

nc -v -w 5 -z 192.168.1.114 2182 &> /dev/null
    echo $?
    输出结果 1表示不通，0表示通。

### 脚本 ###

#!/bin/bash
    LOCALIP=`ifconfig | grep inet | head -1 | awk '{print $2}' | sed 's/addr\://'`
    IPLIST='192.168.161.234 192.168.161.235192.168.161.22 '
    PORTLIST='1521 1522 1523 1524 1525 1526 1527 1528 1529 1530'
    check_nc(){
    for CHECK_IP in $IPLIST
    do
        for CHECK_PORT in $PORTLIST
            do
                nc -nz -w 1 $CHECK_IP $CHECK_PORT
                if [ $? -eq 0 ];then
                    echo "$LOCALIP result $CHECK_IP $CHECK_PORT Connected"
                else
                    echo "$LOCALIP result $CHECK_IP $CHECK_PORT Noconnected"
                fi
            done
    done
    }
    check_nc_7(){
    for CHECK_IP in $IPLIST
    do
        for CHECK_PORT in $PORTLIST
            do
                nc -n -w 1 $CHECK_IP $CHECK_PORT < /dev/null
                if [ $? -eq 0 ];then
                    echo "$LOCALIP result $CHECK_IP $CHECK_PORT Connected"
                else
                    echo "$LOCALIP result $CHECK_IP $CHECK_PORT Noconnected"
                fi
            done
    done
    }
    check_telnet(){
    for CHECK_IP in $IPLIST
    do
        for CHECK_PORT in $PORTLIST
            do
                echo  -e  "\n"| telnet $CHECK_IP $CHECK_PORT | grep Connected
                if [ $? -eq 0 ];then
                    echo "$LOCALIP result $CHECK_IP $CHECK_PORT Noconnected"
                else
                    echo "$LOCALIP result $CHECK_IP $CHECK_PORT Connected"
                fi
            done
    done
    }
    echo "--------------------------------------"
    echo "execution time : `date`"
    echo "--------------------------------------"
    echo "Home ip : $LOCALIP"
    echo "--------------------------------------"
    which nc > /dev/null
    if [ $? -eq 0 ];then
        echo "------------------nc------------------"
        echo "--------------------------------------"
        cat /etc/redhat-release |grep 'release 7' > /dev/null
        if [ $? -eq 0 ];then
            check_nc_7
        else
            check_nc
        fi
    else
        which telnet > /dev/null
        if [ $? -eq 0 ];then
            echo "-----------------telnet----------------"
            check_telnet
        fi
    fi

[Linux shell]: https://www.cnblogs.com/mrice/p/11551145.html