curl下载文件保留服务器端文件名和时间戳

curl -R -O https://mirrors.tencent.com/tlinux/4.4/images/qcow2/x86_64/TencentOS-Server-GenericCloud-4.4-20251223.0.x86_64.qcow2

       -O, --remote-name
              Write output to a local file named like the remote file we get. (Only the file part of the remote file is used, the path is cut
              off.)

              The  file  is saved in the current working directory. If you want the file saved in a different directory, make sure you change
              the current working directory before invoking curl with this option or use --output-dir.

              The remote file name to use for saving is extracted from the given URL, nothing else, and if it already exists it is  overwrit‐
              ten.  If you want the server to be able to choose the file name refer to -J, --remote-header-name which can be used in addition
              to this option. If the server chooses a file name and that name already exists it is not overwritten.

              There is no URL decoding done on the file name. If it has %20 or other URL encoded parts of the name, they end up as-is as file
              name.

              You may use this option as many times as the number of URLs you have.

              -O, --remote-name can be used several times in a command line

              Example:
               curl -O https://example.com/filename

              See also --remote-name-all, --output-dir and ‐J, --remote-header-name.

       -R, --remote-time
              Makes curl attempt to figure out the timestamp of the remote file that is getting downloaded, and if that is available make the
              local file get that same timestamp.

              Providing -R, --remote-time multiple times has no extra effect.  Disable it again with --no-remote-time.

              Example:
               curl --remote-time -o foo https://example.com

              See also ‐O, --remote-name and ‐z, --time-cond.