cURL：上传时如何显示进度信息？ [英] cURL: How to display progress information while uploading?

问题描述

我使用以下语法上传文件：

I use the following syntax to upload files:

curl --form upload=@localfilename --form press=OK [URL]

如何显示进度？

推荐答案

这是我在一个构建脚本中使用的：

This is what I use in one of my build scripts:

curl "${UPLOAD_URL}" \
    --progress-bar \
    --verbose \
    -F build="${BUILD}" \
    -F version="${VERSION}" \
    -F ipa="@${IPA};type=application/octet-stream" \
    -F assets="@-;type=text/xml" \
    -F replace="${REPLACE}" \
    -A "${CURL_FAKE_USER_AGENT}" \
    <<< "${ASSETS}" \
    | tee -a "${LOG_FILE}" ; test ${PIPESTATUS[0]} -eq 0

-F 和 -A 选项可能不会让您感兴趣，但是有用的部分是：

The -F and -A options will probably not be of interest to you, but the helpful parts are:

curl "${UPLOAD_URL}" --progress-bar

告诉 curl 在上传过程中显示进度条（而不是默认的进度表），并且：

which tells curl to show a progress bar (instead of the default 'progress meter') during the upload, and:

 | tee -a "${LOG_FILE}" ; test ${PIPESTATUS[0]} -eq 0

将命令的输出附加到日志中文件，并将其回显到 stdout 。使用 test $ {PIPESTATUS [0]} -eq 0 部分可以使该行的退出状态（在bash脚本中）与退出代码相同。返回 curl 命令，而不返回 tee 命令的退出状态（这是必需的，因为 tee 实际上是该行中最后执行的命令，而不是 curl ）。

which appends the output of the command to a log file and also echo's it to stdout. The test ${PIPESTATUS[0]} -eq 0 part makes it so that the exit status of this line (which is in a bash script) is the same exit code that the curl command returned and not the exit status of the tee command (necessary because tee is actually the last command being executed in this line, not curl).

从 man curl ：

PROGRESS METER
       curl normally displays a progress meter during operations, indicating the
       amount of transferred data, transfer speeds and estimated time left, etc.

       curl  displays  this  data to the terminal by default, so if you invoke curl
       to do an operation and it is about to write data to the terminal, it disables
       the progress meter as otherwise it would mess up the output mixing progress
       meter and response data.

       If you want a progress meter for HTTP POST or PUT requests, you need to
       redirect the response output to a file, using shell redirect (>), -o [file]
       or similar.

       It is not the same case for FTP upload as that operation does not spit out
       any response data to the terminal.

       If you prefer a progress "bar" instead of the regular meter, -# is your
       friend.

OPTIONS
       -#, --progress-bar
              Make curl display progress as a simple progress bar instead of the
              standard, more informational, meter.

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