curl http://www.geeksforgeeks.org
Post Json数据
curl -H "Content-Type:application/json" -H "Data_Type:msg" -X POST --data '{"text": "Hello world"}' http://127.0.0.1:8000/tts
下载,显示进度
curl -o hello.zip ftp://speedtest.tele2.net/1MB.zip
参考：
https://www.geeksforgeeks.org/curl-command-in-linux-with-examples/
https://www.cnblogs.com/hujiapeng/p/8470099.html