## curl http请求 ``` $ curl -v http://www.baidu.com >/dev/null * Connected to www.baidu.com (180.149.131.98) port 80 (#0) > GET / HTTP/1.1 > Host: www.baidu.com > User-Agent: curl/7.58.0 > Accept: */* > < HTTP/1.1 200 OK < Server: bfe/1.0.8.18 < Date: Mon, 12 Nov 2018 13:23:13 GMT < Content-Type: text/html < Content-Length: 2381 < Last-Modified: Mon, 23 Jan 2017 13:27:36 GMT < Connection: Keep-Alive < ETag: "588604c8-94d" < Cache-Control: private, no-cache, no-store, proxy-revalidate, no-transform < Pragma: no-cache < Set-Cookie: BDORZ=27315; max-age=86400; domain=.baidu.com; path=/ < Accept-Ranges: bytes < { [2381 bytes data] 100 2381 100 2381 0 0 99208 0 --:--:-- --:--:-- --:--:-- 99208 * Connection #0 to host www.baidu.com left intact ```