curl 获取网站信息

curl --head www.baidu.com 可以获取网站开发语言 用的服务器 

 HTTP/1.1 200 OK
Accept-Ranges: bytes
Cache-Control: private, no-cache, no-store, proxy-revalidate, no-transform
Connection: Keep-Alive
Content-Length: 277
Content-Type: text/html
Date: Wed, 19 Dec 2018 14:51:58 GMT
Etag: "575e1f59-115"
Last-Modified: Mon, 13 Jun 2016 02:50:01 GMT
Pragma: no-cache
Server: bfe/1.0.8.18