curl -l的信息詳解（這樣還看不懂，就沒天理了）

[root@jerry ~]# curl -I "http://www.baidu.com" HTTP/1.1 200 OK Accept-Ranges: bytes Cache-Control: private, no-cache, no-store, proxy-revalidate, no-transform Connection: Keep-Alive Content-Length: 27

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