获取系统物理地址的方法

其实很简单，就是借助两个网络服务来完成

1、获取公网IP

curl https://ip.cn/ip

14.120.26.99

2、根据公网 IP 获取物理地址

curl https://ip.cn/$ip

{"status":"success",
"data":{
"ipv4":"14.120.26.99",
"continent_name":"Asia","country_name":"China",
"subdivision_1_name":"Guangdong","subdivision_2_name":null,
"city_name":"Guangzhou","latitude":"23.11670","longitude":"113.25000"
}
}