如何强制cp覆盖目录，而不是在里面创建另一个？ [英] How to force cp to overwrite directory instead of creating another one inside?

问题描述

我想写一个将覆盖现有目录的bash脚本。所以，我有一个目录foo /和我试图覆盖bar /用它。但是当我这样做时，

I'm trying to write a bash script that will overwrite an existing directory. So, I have a directory foo/ and I am trying to overwrite bar/ with it. But when I do,

cp -Rf foo/ bar/

会发生什么是创建一个新的bar / foo /目录。我不想要。 foo / a和b中有两个文件。在bar /中也有相同名称的文件。我想要foo / a和foo / b替换bar / a和bar / b。

what happens is that a new bar/foo/ directory is created. I don't want that. There are two files in foo/ a and b. There are files with same names in bar/ as well. I want the foo/a and foo/b to replace bar/a and bar/b.

推荐答案

您可以使用 -T $ c> cp 。

请参阅 cp 的手册页。

You can do this using -T option in cp.
See Man page for cp.

-T, --no-target-directory
    treat DEST as a normal file

根据您的示例，以下是文件结构。

So as per your example, following is the file structure.

$ tree test
test
|-- bar
|   |-- a
|   `-- b
`-- foo
    |-- a
    `-- b
2 directories, 4 files

当您使用 -v 作为详细信息时，您可以看到明显的区别。

当您使用 -R 选项时。

You can see the clear difference when you use -v for Verbose.
When you use just -R option.

$ cp -Rv foo/ bar/
`foo/' -> `bar/foo'
`foo/b' -> `bar/foo/b'
`foo/a' -> `bar/foo/a'
 $ tree
 |-- bar
 |   |-- a
 |   |-- b
 |   `-- foo
 |       |-- a
 |       `-- b
 `-- foo
     |-- a
     `-- b
3 directories, 6 files

当使用选项 -T 覆盖内容时，文件而不是目录。

When you use the option -T it overwrites the contents, treating the destination like a normal file and not directory.

$ cp -TRv foo/ bar/
`foo/b' -> `bar/b'
`foo/a' -> `bar/a'

$ tree
|-- bar
|   |-- a
|   `-- b
`-- foo
    |-- a
    `-- b
2 directories, 4 files

这应该可以解决你的问题。

This should solve your problem.

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