从URL，HTML或JSON提取Confluence版本

Question

我正在尝试从类似

的URL中提取版本

https://my.atlassian.com/download/feeds/current/confluence.json

这是我的bash脚本：

#!/bin/bash

# Get the actual version
url="https://de.atlassian.com/software/confluence/download"
actual_version="$(curl -s $url | grep -Po '(?<=version :)\d+' | head -1)"

echo $actual_version

不幸的是，它不仅仅给我版本号。

有任何想法如何正确执行此操作吗？

注意：根据评论，问题有多项改进/修订。

Answer 1

TL; DR

这是从其JSON页面提取版本的最终命令：

curl -s "https://my.atlassian.com/download/feeds/current/confluence.json" | grep -Po '(?<="version":")[^"]*'  | head -1
6.11.0

详细信息

看看这个返回产品版本为JSON的URL：https://my.atlassian.com/download/feeds/current/confluence.json

在撰写本文时，这里是JSON源的副本：

downloads([{"description":"6.11.0 - Linux Installer (64 bit)","zipUrl":"https://www.atlassian.com/software/confluence/downloads/binary/atlassian-confluence-6.11.0-x64.bin","tarUrl":null,"md5":"5ce76e5763b97b93db21ba447b5fb4f0","size":"564.1 MB","released":"12-Aug-2018","type":"Binary","platform":"Unix","version":"6.11.0","releaseNotes":"https://confluence.atlassian.com/display/DOC/Confluence+6.11+Release+Notes","upgradeNotes":"https://confluence.atlassian.com/display/DOC/Confluence+6.11+Upgrade+Notes"},{"description":"6.11.0 - Windows Installer (64 bit)","zipUrl":"https://www.atlassian.com/software/confluence/downloads/binary/atlassian-confluence-6.11.0-x64.exe","tarUrl":null,"md5":"71c6f1275cc4ed6089871e5a7fd1f09b","size":"564.4 MB","released":"12-Aug-2018","type":"Binary","platform":"Windows","version":"6.11.0","releaseNotes":"https://confluence.atlassian.com/display/DOC/Confluence+6.11+Release+Notes","upgradeNotes":"https://confluence.atlassian.com/display/DOC/Confluence+6.11+Upgrade+Notes"},{"description":"6.11.0 - Standalone (TAR.GZ Archive)","zipUrl":"https://www.atlassian.com/software/confluence/downloads/binary/atlassian-confluence-6.11.0.tar.gz","tarUrl":null,"md5":"4c245b2b1dcc18ec9aff483c708f937e","size":"510.4 MB","released":"12-Aug-2018","type":"Binary","platform":"Unix, Mac OS X","version":"6.11.0","releaseNotes":"https://confluence.atlassian.com/display/DOC/Confluence+6.11+Release+Notes","upgradeNotes":"https://confluence.atlassian.com/display/DOC/Confluence+6.11+Upgrade+Notes"},{"description":"6.11.0 - Standalone (ZIP Archive)","zipUrl":"https://www.atlassian.com/software/confluence/downloads/binary/atlassian-confluence-6.11.0.zip","tarUrl":null,"md5":"f6d08f93840b92a2fbf9ac0005f249fb","size":"512.4 MB","released":"12-Aug-2018","type":"Binary","platform":"Windows","version":"6.11.0","releaseNotes":"https://confluence.atlassian.com/display/DOC/Confluence+6.11+Release+Notes","upgradeNotes":"https://confluence.atlassian.com/display/DOC/Confluence+6.11+Upgrade+Notes"}])

在那里，您可以找到版本：