Linux curl 用法来获取标题
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curl usage to get header
提问by Ankur Agarwal
Why does this not work:
为什么这不起作用：
curl -X HEAD http://www.google.com
But these both work just fine:
但是这两个都工作得很好：
curl -I http://www.google.com
curl -X GET http://www.google.com
采纳答案by dmc7z
You need to add the -i flag to the first command, to include the HTTP header in the output. This is required to print headers.
您需要将 -i 标志添加到第一个命令，以在输出中包含 HTTP 标头。这是打印标题所必需的。
curl -X HEAD -i http://www.google.com
More here: https://serverfault.com/questions/140149/difference-between-curl-i-and-curl-x-head
更多信息：https: //serverfault.com/questions/140149/difference-between-curl-i-and-curl-x-head
回答by SheetJS
google.com is not responding to HTTP HEADrequests, which is why you are seeing a hang for the first command.
google.com 未响应HTTP HEAD请求，这就是您看到第一个命令挂起的原因。
It does respond to GETrequests, which is why the third command works.
它确实响应GET请求，这就是第三个命令起作用的原因。
As for the second, curl just prints the headers from a standard request.
至于第二个，curl 只是打印标准请求的标头。
回答by bovender
curl --head https://www.example.net
curl --head https://www.example.net
I was pointed to this by curl itself; when I issued the command with -X HEAD, it printed:
我被 curl 本身指出了这一点；当我用 发出命令时-X HEAD，它打印出：
Warning: Setting custom HTTP method to HEAD with -X/--request may not work the
Warning: way you want. Consider using -I/--head instead.
