如何对两个源代码树使用diff命令 [英] How do you use the diff command against two source trees

问题描述

我尝试对两个源目录运行 diff，得到一个补丁文件，两个目录之间带有 diff。

I tried running 'diff' against two source directories get a patch file with a 'diff' between the two directories.

diff -rupN flyingsaucer-R8pre2_b/ flyingsaucer-R8pre2/ > a.patch

上面的命令似乎不起作用，它会产生所有差异，我得到一个13 MB的文件，实际上应该进行一些更改。

The command above does not seem to work, it generates a diff of everything and I get a 13 MB file, when in reality, it should be a couple of changes.

推荐答案

应该与gnu的任何最新版本一起使用diff（在这里使用gnu diff 2.8.1进行了测试。）

Should work with any recent version of gnu diff (tested here with gnu diff 2.8.1.)

您可能想添加-b（也许是-B）来忽略空格中的差异，而空格可能会产生较大的差异不必要的补丁文件。

You might want to add -b (and perhaps -B) to ignore difference in white space which perhaps generate large patch files unnecessarily.

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