获取公网ip

通过curl获取（任选其中之一）

curl cip.cc
curl ipinfo.io
curl myip.ipip.net
curl http://members.3322.org/dyndns/getip
curl https://ip.cn
curl httpbin.org/ip
curl ip.sb
curl whatismyip.akamai.com
curl ipecho.net/plain
curl icanhazip.com
 
# 淘宝
curl -s  http://ip.taobao.com/service/getIpInfo2.php?ip=myip | awk -F"ip" '{print $2}' | awk -F'"' '{print $3}'
 
curl -s ifcfg.cn/echo | python -m json.tool