几个网站让你从命令行知道自己的公网IP

• ifconfig.me
• ipinfo.io/ip
• api.ipify.org
• ipecho.net/plain
• wtfismyip.com/json

curl ifconfig.me
curl ipinfo.io/ip
curl api.ipify.org
curl ipecho.net/plain
curl wtfismyip.com/json

结果