blocks|key|2952932|text|非常有趣，我还没有注意到GitHub中的“最新”标签--发布。正如我现在所了解的，如果你使用的是GitHubs+release-system的“预发布”-capabilities，它们是免费的。但是我不知道任何通过最新路径访问二进制文件的方法。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2952933|我建议您使用git+(在您的travis-vm中提供)来下载最新的标签。|2952934|就像Julien+Renault在他的博客post中描述的那样，你可以像这样签出存储库中的最新标签：|offset|length|2952935|#+this+step+should+be+optional
git+fetch+--tags

latestTag=$(git+describe+--tags+`git+rev-list+--tags+--max-count=1`)
git+checkout+$latestTag|code-block|syntax|javascript|2952936|该解决方案基于最新标签也是最新版本的假设。|2952937|entityMap|0|LINK|mutability|MUTABLE|url|http://julienrenaux.fr/2013/10/04/how-to-automatically-checkout-the-latest-tag-of-a-git-repository/^0|0|0|L|4|0|0|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|X|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|Y|8|@]|9|@$F|Z|G|10|1|11]]|A|$]]|$1|H|3|I|5|J|7|12|8|@]|9|@]|A|$K|L]]|$1|M|3|N|5|6|7|13|8|@]|9|@]|A|$]]|$1|O|3|-4|5|6|7|14|8|@]|9|@]|A|$]]]|P|$Q|$5|R|S|T|A|$U|V]]]]

Very interesting, I haven't noticed a "latest" tag in GitHub-releases yet. As i now figured out, they're given away if you're using the "pre-release"-capabilities of GitHubs release-system. But i don't know any way to access binaries via a latest-path.

I would like to suggest you using git (which is available in your travis-vm) to download the latest tag.

Like Julien Renault describes in his blog <a href="http://julienrenaux.fr/2013/10/04/how-to-automatically-checkout-the-latest-tag-of-a-git-repository/" rel="nofollow">post</a>, you will be able to checkout the latest tag in the repository like this:

<pre><code># this step should be optional
git fetch --tags

latestTag=$(git describe --tags `git rev-list --tags --max-count=1`)
git checkout $latestTag
</code></pre>

This solution is based on the assumption that the latest tag is also the latest version.

blocks|key|2952994|text|正如@florianb指出的那样，我应该使用git。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2952995|最初我的.travis.yml是这样的：|2952996|before_install:
-+curl+-L+https://raw.githubusercontent.com/greghendershott/travis-racket/master/install-racket.sh+%7C+bash|code-block|syntax|javascript|2952997|这将自动从repo中获取任何最新版本。|2952998|但有人向我指出，GitHub不希望人们使用raw.github.com进行下载。相反，人们应该使用"releases“。因此，我是一个很好的doob，并且每次都手动发布。然后我的.travis.yml是这样的：|offset|length|style|CODE|2952999|before_install:
-+curl+-L+https://github.com/greghendershott/travis-racket/releases/download/v0.6/install-racket.sh+%7C+bash|2953000|但每次发布都是一件很糟糕的事情。更糟糕的是，所有.travis.yml文件都需要更新以指向文件的较新版本。|2953001|相反，只需使用git克隆存储库，并使用其中的文件：|2953002|before_install:
-+git+clone+https://github.com/greghendershott/travis-racket.git
-+cat+travis-racket/install-racket.sh+%7C+bash+#+pipe+to+bash+not+sh!|2953003|entityMap^0|0|0|0|0|L|E|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|10|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|11|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|12|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|13|8|@]|9|@]|A|$]]|$1|K|3|L|5|6|7|14|8|@$M|15|N|16|O|P]]|9|@]|A|$]]|$1|Q|3|R|5|F|7|17|8|@]|9|@]|A|$G|H]]|$1|S|3|T|5|6|7|18|8|@]|9|@]|A|$]]|$1|U|3|V|5|6|7|19|8|@]|9|@]|A|$]]|$1|W|3|X|5|F|7|1A|8|@]|9|@]|A|$G|H]]|$1|Y|3|-4|5|6|7|1B|8|@]|9|@]|A|$]]]|Z|$]]

As @florianb pointed out, I should use git.

Originally my .travis.yml was something like:

<pre><code>before_install:
- curl -L https://raw.githubusercontent.com/greghendershott/travis-racket/master/install-racket.sh | bash
</code></pre>

This would automatically get whatever the latest version is, from the repo.

But someone pointed out to me that GitHub doesn't want people to use <code>raw.github.com</code> for downloads. Instead people should use "releases". So I was a good doob and manually made a release each time. Then my .travis.yml was something like:

<pre><code>before_install:
- curl -L https://github.com/greghendershott/travis-racket/releases/download/v0.6/install-racket.sh | bash
</code></pre>

But it's a PITA to make a release each time. Worse, all .travis.yml files need to be updated to point to the newer version of the file.

Instead -- just use git to clone the repo, and use the file within it:

<pre><code>before_install:
- git clone https://github.com/greghendershott/travis-racket.git
- cat travis-racket/install-racket.sh | bash # pipe to bash not sh!
</code></pre>

blocks|key|156595|text|如果你在发行版中只有一次下载，这里有一种方法可以在没有Github的情况下完成：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|156596|wget+$(curl+-s+https://api.github.com/repos/USERNAME/REPONAME/releases/latest+%7C+grep+'browser_'+%7C+cut+-d\"+-f4)|code-block|syntax|javascript|156597|这非常简单(尽管不是很好)，当然，如果您想通过管道将wget传递给某个对象，可以将其替换为另一个curl调用。|156598|基本上，curl调用为您提供了一个JSON结构，我只是使用基本的shell实用程序来提取下载的URL。|156599|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|P|8|@]|9|@]|A|$]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

Here is a way to do it w/o Github if you have a single download in the release:

<pre><code>wget $(curl -s https://api.github.com/repos/USERNAME/REPONAME/releases/latest | grep 'browser_' | cut -d\" -f4)
</code></pre>

It is pretty easy (though not pretty), and of course you can swap out wget for another curl call if you want to pipe it to something.

Basically, the curl call nets you a JSON structure, and I'm just using basic shell utilities to extract the URL to the download.

blocks|key|2953018|text|在windows上，只使用powershell，这对我来说是可行的。它可能会写得更短。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2953019|#Downloads+latest+paket.bootstrapper.exe+from+github
$urlbase+=+"https://github.com"
$latestPage="$urlbase/fsprojects/Paket/releases/latest"
Write-Host+"Parsing+latest+release+page:+$latestPage"
$page=Invoke-Webrequest+-uri+$latestPage
$latestBootStrapper=($page.Links+%7C+Where-Object+{+$_.href+-match+"bootstrapper"+}).href

$dlurl="$urlbase$latestBootStrapper"
Write-Host+"Downloading+paket.bootstrapper.exe+from+$dlurl"

$wc=new-object+net.webclient
$wc.UseDefaultCredentials=$true
$wc.Proxy.Credentials=$wc.Credentials
$wc.DownloadFile($dlurl,+(join-path+(resolve-path+".\")+"paket.bootstrapper.exe"))|code-block|syntax|javascript|2953020|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

On windows, only using powershell, this works for me. It can probably be written a lot shorter.

<pre><code>#Downloads latest paket.bootstrapper.exe from github
$urlbase = "https://github.com"
$latestPage="$urlbase/fsprojects/Paket/releases/latest"
Write-Host "Parsing latest release page: $latestPage"
$page=Invoke-Webrequest -uri $latestPage
$latestBootStrapper=($page.Links | Where-Object { $_.href -match "bootstrapper" }).href

$dlurl="$urlbase$latestBootStrapper"
Write-Host "Downloading paket.bootstrapper.exe from $dlurl"

$wc=new-object net.webclient
$wc.UseDefaultCredentials=$true
$wc.Proxy.Credentials=$wc.Credentials
$wc.DownloadFile($dlurl, (join-path (resolve-path ".\") "paket.bootstrapper.exe"))
</code></pre>

blocks|key|2740256|text|我使用它来获取PowerShell+5%2B中的下载URL(替换帐户和存储库)|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2740257|Invoke-RestMethod+-uri++https://api.github.com/repos/ACCOUNT/REPO/releases/latest+%7C+select+-ExpandProperty+assets+%7C+select+-expand+browser_download_url+|code-block|syntax|javascript|2740258|注意:如果他们有多个包，这将是一个列表。如果你想选择一个特定的名字，找到名字的唯一部分，例如Windows的win，然后使用：(replace+ACCOUNT，REPO+&+SELECTOR)|2740259|Invoke-RestMethod+-uri++https://api.github.com/repos/ACCOUNT/REPO/releases/latest+%7C+select+-ExpandProperty+assets+%7C+?+{+$_.name.Contains("SELECTOR")}+%7C+select+-expand+browser_download_url|2740260|额外的好处是，如果您将上面的内容赋值给一个变量，那么您可以获取该文件并使用以下内容提取它(假设您将其赋值给$uri)：|2740261|Invoke-WebRequest+$uri+-OutFile+"release.zip"
Expand-Archive+.\release.zip|2740262|在PowerShell+6%2B中，这应该可以在其他平台上运行。|2740263|entityMap^0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|U|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|W|8|@]|9|@]|A|$]]|$1|M|3|N|5|D|7|X|8|@]|9|@]|A|$E|F]]|$1|O|3|P|5|6|7|Y|8|@]|9|@]|A|$]]|$1|Q|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]]|R|$]]

I use this to get the download URLs in PowerShell 5+ (replace ACCOUNT &amp; REPO)

<pre><code>Invoke-RestMethod -uri https://api.github.com/repos/ACCOUNT/REPO/releases/latest | select -ExpandProperty assets | select -expand browser_download_url 
</code></pre>

Note if they have more than one package this will be a list. If you want to pick a certain one find a unique part of the name i.e. win for Windows and use:
(replace ACCOUNT, REPO &amp; SELECTOR)

<pre><code>Invoke-RestMethod -uri https://api.github.com/repos/ACCOUNT/REPO/releases/latest | select -ExpandProperty assets | ? { $_.name.Contains("SELECTOR")} | select -expand browser_download_url
</code></pre>

As a bonus if you assign the above to a variable you can then grab the file and extract it with the following (assuming you assign to $uri):

<pre><code>Invoke-WebRequest $uri -OutFile "release.zip"
Expand-Archive .\release.zip
</code></pre>

In PowerShell 6+ this should work on other platforms than Windows.

blocks|key|152807|text|$repoName+=+"PowerShell/PowerShell"
$assetPattern+=+"*-win-x64.msi"
$extractDirectory+=+"C:\Users\Public\Downloads"


$releasesUri+=+"https://api.github.com/repos/$repoName/releases/latest"
$asset+=+(Invoke-WebRequest+$releasesUri+%7C+ConvertFrom-Json).assets+%7C+Where-Object+name+-like+$assetPattern
$downloadUri+=+$asset.browser_download_url

$extractPath+=+[System.IO.Path]::Combine($extractDirectory,+$asset.name)
Invoke-WebRequest+-Uri+$downloadUri+-Out+$extractPath|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|152808|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>$repoName = &quot;PowerShell/PowerShell&quot;
$assetPattern = &quot;*-win-x64.msi&quot;
$extractDirectory = &quot;C:\Users\Public\Downloads&quot;


$releasesUri = &quot;https://api.github.com/repos/$repoName/releases/latest&quot;
$asset = (Invoke-WebRequest $releasesUri | ConvertFrom-Json).assets | Where-Object name -like $assetPattern
$downloadUri = $asset.browser_download_url

$extractPath = [System.IO.Path]::Combine($extractDirectory, $asset.name)
Invoke-WebRequest -Uri $downloadUri -Out $extractPath
</code></pre>

blocks|key|152822|text|您可以在https://api.github.com中使用curl。它提供JSON输出，您可以使用jq或您最喜欢的json工具轻松地从中提取所需的内容。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|152823|例如，使用问题中的存储库：|152824|gituser=reactiveui;+repo=ReactiveUI

tag_name=$(curl+-sL+https://api.github.com/repos/$gituser/$repo/releases/latest+%7C+jq+-r+'.tag_name');+echo+$tag_name
#+output:+"16.3.10"

tarurl=$(curl+-sL+https://api.github.com/repos/$gituser/$repo/releases/latest+%7C+jq+-r+'.tarball_url');+echo+$tarurl
#+output:+https://api.github.com/repos/reactiveui/ReactiveUI/tarball/16.3.10

zipurl=$(curl+-sL+https://api.github.com/repos/$gituser/$repo/releases/latest+%7C+jq+-r+'.zipball_url');+echo+$zipurl
#+output:+https://api.github.com/repos/reactiveui/ReactiveUI/zipball/16.3.10|code-block|syntax|javascript|152825|因此，您可以在一行程序中使用嵌套的curl获取下载：|152826|curl+-OL+$(curl+-sL+https://api.github.com/repos/filesender/filesender/releases/latest+%7C+jq+-r+'.tarball_url')|152827|这将下载该文件，并使用其tag_name的名称保存该文件，但不带扩展名。因此，您可能希望通过附加".tgz“或".zip”来重命名它，具体取决于您下载的内容。|152828|Windows用户注意:+curl现在也默认安装在Windows上，但要注意它必须被称为curl.exe。这是因为Powershell有一个别名，愚蠢地叫"curl“，这是不一样的！|152829|entityMap|0|LINK|mutability|MUTABLE|url|https://api.github.com/^0|1D|2|4|M|0|0|0|0|H|4|0|0|C|8|0|18|8|0^^$0|@$1|2|3|4|5|6|7|12|8|@$9|13|A|14|B|C]]|D|@$9|15|A|16|1|17]]|E|$]]|$1|F|3|G|5|6|7|18|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|19|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|1A|8|@$9|1B|A|1C|B|C]]|D|@]|E|$]]|$1|O|3|P|5|J|7|1D|8|@]|D|@]|E|$K|L]]|$1|Q|3|R|5|6|7|1E|8|@$9|1F|A|1G|B|C]]|D|@]|E|$]]|$1|S|3|T|5|6|7|1H|8|@$9|1I|A|1J|B|C]]|D|@]|E|$]]|$1|U|3|-4|5|6|7|1K|8|@]|D|@]|E|$]]]|V|$W|$5|X|Y|Z|E|$10|11]]]]

You can use curl with <a href="https://api.github.com" rel="nofollow noreferrer">https://api.github.com</a>. It gives JSON output from which you can easily extract what you need with <code>jq</code> or your favorite json tool.
For example, using the repository in the question:
<pre class="lang-sh prettyprint-override"><code>gituser=reactiveui; repo=ReactiveUI

tag_name=$(curl -sL https://api.github.com/repos/$gituser/$repo/releases/latest | jq -r '.tag_name'); echo $tag_name
# output: &quot;16.3.10&quot;

tarurl=$(curl -sL https://api.github.com/repos/$gituser/$repo/releases/latest | jq -r '.tarball_url'); echo $tarurl
# output: https://api.github.com/repos/reactiveui/ReactiveUI/tarball/16.3.10

zipurl=$(curl -sL https://api.github.com/repos/$gituser/$repo/releases/latest | jq -r '.zipball_url'); echo $zipurl
# output: https://api.github.com/repos/reactiveui/ReactiveUI/zipball/16.3.10
</code></pre>
So you could get the download with a nested <code>curl</code> in a one-liner:
<pre class="lang-sh prettyprint-override"><code>curl -OL $(curl -sL https://api.github.com/repos/filesender/filesender/releases/latest | jq -r '.tarball_url')
</code></pre>
This will download the file, and save it with the name of its <code>tag_name</code>, but without extension. So you may want to rename it by appending &quot;.tgz&quot; or &quot;.zip&quot;, depending on which you downloaded.
Note for Windows users: curl is now installed by default on Windows too, but beware that it must be called as <code>curl.exe</code>. That's because Powershell has an alias stupidly called &quot;curl&quot; which is not the same!

Although this question is similar to <a href="https://stackoverflow.com/questions/21439239/github-latest-release">GitHub latest release</a>, it's actually different -- it's about a link that means "the latest version of the download file itself".

GitHub provides a "Latest" URL that redirects to the information page for the latest release. For example: <a href="https://github.com/reactiveui/ReactiveUI/releases/latest" rel="noreferrer">https://github.com/reactiveui/ReactiveUI/releases/latest</a> will redirect to <a href="https://github.com/reactiveui/ReactiveUI/releases/tag/5.99.6" rel="noreferrer">https://github.com/reactiveui/ReactiveUI/releases/tag/5.99.6</a> (as I type this; or to the page for a newer version, someday).

That's great but I need a URL to the download file itself. In this example, the .zip file associated with the green download button, <a href="https://github.com/reactiveui/ReactiveUI/releases/download/5.99.6/ReactiveUI-5.99.6.zip" rel="noreferrer">https://github.com/reactiveui/ReactiveUI/releases/download/5.99.6/ReactiveUI-5.99.6.zip</a> (as I type this; or to a newer zip file, someday).

Why? I want to give the URL to curl, as part of a Travis CI script, to download the latest version.

I guessed at a few URLs like /releases/download/latest/file.zip (substituting "latest" for the version part) and /releases/download/file.zip but those 404.

Is there any way to do this -- in the context of a shell script and curl (note: not in a browser page with JS)?

GitHub URL for latest release of the _download file_?

Windows

GitHub

JSON

尽管这个问题类似于，但它实际上是不同的--它是关于一个链接，它意味着“下载文件本身的最新版本”。GitHub提供了一个“最新”的网址，可以重定向到最新版本的信息页面。例如：将重定向到 (在我输入的时候；或者将来某一天会重定向到更新版本的页面)。这很好，但我需要下载文件本身的URL。在本例中，与绿色download按钮关...

问最新版本的_download file_？的GitHub URL？
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