#!/bin/bash # 函数：提取 CIDR 的网络地址和子网掩码 function extract_network() { echo $1 | awk -F '/' '{print $1}' } function extract_subnet() { echo $1 | awk -F '/' '{print $2}' } # 函数：将 IP 地址转换为二进制格式 function ip_to_binary() { local ip=$1 local binary="" local IFS='.' local octets=($ip) for octet in "${octets[@]}"; do local bin_octet="" local num=$octet for (( i=0; i<8; i++ )); do bin_octet=$((num % 2))$bin_octet num=$((num / 2)) done binary+=$bin_octet done echo $binary } # 函数：比较两个 IP 地址是否在同一网段 function same_network() { network1=$(extract_network $1) subnet1=$(extract_subnet $1) network2=$(extract_network $2) subnet2=$(extract_subnet $2) binary1=$(ip_to_binary $network1) binary2=$(ip_to_binary $network2) # 截取相同长度的二进制子串 binary1=$(echo $binary1 | cut -c1-$subnet1) binary2=$(echo $binary2 | cut -c1-$subnet2) if [ "$binary1" == "$binary2" ]; then echo "两个 CIDR 在同一网段" else echo "两个 CIDR 不在同一网段" fi } # 测试 CIDR1="10.206.216.21/24" CIDR2="10.206.217.10/24" same_network $CIDR1 $CIDR2