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-X, --request <command>
- curl 默认的http请求方法是GET。
在没有指定请求方法的时候，默认使用GET方法。
指定了，将使用指定的方法，如下图指定了POST方法。
- 通常情况下，你并不需要指定这个选项，他会通过其他命令推导出来。
- 使用这个选项来指定http的请求方法，他并不会改变curl命令的实际行为，仅仅只是改了请求方法。
- (HTTP) Specifies a custom request method to use when communicating with the HTTP server.
- The specified request will be used instead of the method otherwise used (which defaults to GET).
- Read the HTTP 1.1 specification for details and explanations. Common additional HTTP requests include PUT and DELETE, but related technologies like WebDAV offers PROPFIND, COPY, MOVE and more.
- Normally you don't need this option. All sorts of GET, HEAD, POST and PUT requests are rather invoked by using dedicated command line options.
- This option only changes the actual word used in the HTTP request, it does not alter the way curl behaves. So for example if you want to make a proper HEAD request, using -X HEAD will not suffice. You need to use the -I, --head option.
- (FTP) Specifies a custom FTP command to use instead of LIST when doing file lists with FTP.
- If this option is used several times, the last one will be used.
