在终端中，将多个文件夹合并成一个 [英] In terminal, merging multiple folders into one

问题描述

我有一个由WDBackup（西部数字外部高清备份工具）创建的备份目录，它包含备份的每一天的目录，以及备份的增量内容。

I have a backup directory created by WDBackup (western digital external HD backup util) that contains a directory for each day that it backed up and the incremental contents of just what was backed up.

所以层次结构如下：

20100101
  My Documents
    Letter1.doc
  My Music
    Best Songs Every
      First Songs.mp3
    My song.mp3 # modified 20100101
20100102
  My Documents
    Important Docs
      Taxes.doc
  My Music
    My Song.mp3 # modified 20100102

...etc...

只有已更改的内容已备份，并且第一次备份包含所有选择进行备份的文件。

Only what has changed is backed up and the first backup that was ever made contains all the files selected for backup.

我现在想做的是增量复制，同时保持文件夹结构，从最旧到最新，每个这些日期的文件夹到一个'合并'文件夹，它覆盖旧的内容并保留新的东西。

What I'm trying to do now is incrementally copy, while keeping the folder structure, from oldest to newest, each of these dated folders into a 'merged' folder so that it overrides the older content and keeps the new stuff.

例如，如果只使用这两个示例文件夹，最终合并的文件夹将如下所示：

As an example, if just using these two example folders, the final merged folder would look like this:

Merged
  My Documents
    Important Docs
      Taxes.doc
    Letter1.doc
  My Music
    Best Songs Every
      First Songs.mp3
    My Song.mp3 # modified 20100102

希望说得通。

感谢，

Josh

推荐答案

您可以在bash for循环中使用rsync，例如：

You can use rsync in a bash for loop, e.g.:

$ for d in 2010* ; do rsync -av ./$d/ ./Merged/ ; done

请注意，在运行之前你可能只是想谨慎，你可以使用rsync的 -n 标志做一个干运行：

Note that before running this for real you might just want to be cautious and test that it's actually going to do what you want it to - for this you can use rsync's -n flag to do a "dry run":

$ for d in 2010* ; do rsync -avn ./$d/ ./Merged/ ; done

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