blocks|key|1998663|text|您可以更新到较旧的版本：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1998664|svn+update+-r+666+file|code-block|syntax|javascript|1998665|或者，您可以直接查看文件：|1998666|svn+cat+-r+666+file+%7C+less|1998667|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]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

You can update to an older revision:

<pre><code>svn update -r 666 file
</code></pre>

Or you can just view the file directly:

<pre><code>svn cat -r 666 file | less
</code></pre>

blocks|key|1784895|text|更新到特定版本：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1784896|svn+up+-r1234+file|code-block|syntax|javascript|1784897|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|$]]

Update to a specific revision:

<pre><code>svn up -r1234 file
</code></pre>

blocks|key|1998723|text|我认为查看修订的最好方法是使用一个让你更容易的程序/应用程序。我喜欢使用trac：http://trac.edgewall.org/wiki/TracSubversion|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1998724|它提供了一个很棒的svn浏览器，使您可以很容易地回顾您的修订。|1998725|为你想要检查的一个特定版本设置它可能有点夸张，但如果你将来要做很多这样的事情，它可能会很有用。|1998726|entityMap|0|LINK|mutability|MUTABLE|url|http://trac.edgewall.org/wiki/TracSubversion^0|15|18|0|0|0|0^^$0|@$1|2|3|4|5|6|7|P|8|@]|9|@$A|Q|B|R|1|S]]|C|$]]|$1|D|3|E|5|6|7|T|8|@]|9|@]|C|$]]|$1|F|3|G|5|6|7|U|8|@]|9|@]|C|$]]|$1|H|3|-4|5|6|7|V|8|@]|9|@]|C|$]]]|I|$J|$5|K|L|M|C|$N|O]]]]

I believe the best way to view revisions is to use a program/app that makes it easy for you. I like to use trac : <a href="http://trac.edgewall.org/wiki/TracSubversion" rel="nofollow">http://trac.edgewall.org/wiki/TracSubversion</a>

It provides a great svn browser and makes it really easy to go back through your revisions.

It may be a little overkill to set this up for one specific revision you want to check, but it could be useful if you're going to do this a lot in the future.

blocks|key|1998805|text|使用最新版本的Subclipse，您可以在不使用命令提示符的情况下查看它们。在文件中，只需右键单击=>+Team+=>+Switch+to+another+branch/tag/revision。除了revision字段之外，您还可以单击select，您将看到该文件的所有版本。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1998806|entityMap|0|LINK|mutability|MUTABLE|url|http://subclipse.tigris.org/^0|7|9|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

Using the latest versions of <a href="http://subclipse.tigris.org/" rel="nofollow">Subclipse</a>, you can actually view them without using the cmd prompt. On the file, simply right-click => Team => Switch to another branch/tag/revision. Besides the revision field, you click select, and you'll see all the versions of that file.

blocks|key|1785092|text|将当前工作版本的文件与另一个版本的相同文件进行比较也很有趣。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1785093|您可以执行以下操作：|1785094|$+svn+diff+-r34+file|code-block|syntax|javascript|1785095|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|L|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|M|8|@]|9|@]|A|$G|H]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

It is also interesting to compare the file of the current working revision with the same file of another revision. 

You can do as follows:

<pre><code>$ svn diff -r34 file
</code></pre>

blocks|key|1998939|text|要直接回答如何“获取该文件的副本”的问题：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1998940|svn+cat+-r+666+file+>+file_r666|code-block|syntax|javascript|1998941|然后，您可以使用任何查看器或比较程序查看新创建的file_r666，例如|offset|length|style|CODE|1998942|kompare+file_r666+file|1998943|很好地展示了不同之处。|1998944|我发布答案是因为接受答案的命令实际上不会给出文件的副本，而且我的系统(Vim:+Error+reading+input,+exiting...)不支持svn+cat+-r+666+file+%7C+vim。|1998945|entityMap^0|0|0|O|9|0|0|0|Z|10|23|P|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|W|8|@$I|X|J|Y|K|L]]|9|@]|A|$]]|$1|M|3|N|5|D|7|Z|8|@]|9|@]|A|$E|F]]|$1|O|3|P|5|6|7|10|8|@]|9|@]|A|$]]|$1|Q|3|R|5|6|7|11|8|@$I|12|J|13|K|L]|$I|14|J|15|K|L]]|9|@]|A|$]]|$1|S|3|-4|5|6|7|16|8|@]|9|@]|A|$]]]|T|$]]

To directly answer the question of how to "get a copy of that file":

<pre><code>svn cat -r 666 file &gt; file_r666
</code></pre>

then you can view the newly created <code>file_r666</code> with any viewer or comparison program, e.g.

<pre><code>kompare file_r666 file
</code></pre>

nicely shows the differences.

I posted the answer because the accepted answer's commands do actually not give a copy of the file and because <code>svn cat -r 666 file | vim</code> does not work with my system (<code>Vim: Error reading input, exiting...</code>)

I have an SVN file which is now missing some logic and so I need to go back about 40 revisions to the time when it had the logic I need. Other than trying to view a diff of the file in the command line (very hard to read), is there any way I could get a copy of that file to review so I can study it to recover parts?

How do I view an older version of an SVN file?

我有一个SVN文件，它现在缺少了一些逻辑，所以我需要返回到它具有我需要的逻辑时的大约40个修订。除了尝试在命令行中查看文件的差异(非常难以读取)之外，有没有什么方法可以让我获得该文件的副本以进行检查，以便我可以研究它来恢复部分内容？

问如何查看旧版本的SVN文件？
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