获取系统物理地址的方法

从 How to Get Your System’s Geographic Location From a Bash Script 看到的。

其实很简单，就是借助两个网络服务来完成

获取公网IP
```
curl https://ipinfo.io/ip
```
```
14.120.26.99
```

根据公网IP获取物理地址

curl https://ipvigilante.com/$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"}}