如何从Jenkins的Global Builds Stats插件中通过脚本提取信息

我有一个要求,每周发送邮件与有关的工作,在詹金斯运行的细节。我已经设法安装插件,可以看到图形以及。

使用下面的命令我可以直接在浏览器中看到图表。

<jenkins/hudson_url>/plugin/global-build-stats/showChart?buildStatId=<Chart id>

但是,当我尝试使用下面的curl命令下载图像时,我没有得到它。

curl -O <jenkins/hudson_url>/plugin/global-build-stats/showChart?buildStatId=<Chart id>

-rw-r--r--. 1 root    root         62 Nov 14 07:04 osw.hb
-rw-------. 1 root    root        969 Nov 14 07:04 showChart?buildStatId=<chart id>

“showchartfile”的内容如下。

Authentication required
<!--
You are authenticated as: anonymous
Groups that you are in:

Permission you need to have (but didn't): hudson.model.Hudson.Read
 ... which is implied by: hudson.security.Permission.GenericRead
 ... which is implied by: hudson.model.Hudson.Administer
-->

</body></html>  

https://wiki.jenkins.io/pages/viewpage.action?pageId=46336030