Copies files and directory trees.
XCOPY source [destination] [/A | /M] [/D[:date]] [/P] [/S [/E]] [/V] [/W]
[/C] [/I] [/Q] [/F] [/L] [/G] [/H] [/R] [/T] [/U]
[/K] [/N] [/O] [/X] [/Y] [/-Y] [/Z] [/B] [/J]
[/EXCLUDE:file1[+file2][+file3]...]
source Specifies the file(s) to copy.
destination Specifies the location and/or name of new files.
/A Copies only files with the archive attribute set,
doesn't change the attribute.
/M Copies only files with the archive attribute set,
turns off the archive attribute.
/D:m-d-y Copies files changed on or after the specified date.
If no date is given, copies only those files whose
source time is newer than the destination time.
/EXCLUDE:file1[+file2][+file3]...
Specifies a list of files containing strings. Each string
should be in a separate line in the files. When any of the
strings match any part of the absolute path of the file to be
copied, that file will be excluded from being copied. For
example, specifying a string like \obj\ or .obj will exclude
all files underneath the directory obj or all files with the
.obj extension respectively.
/P Prompts you before creating each destination file.
/S Copies directories and subdirectories except empty ones.
/E Copies directories and subdirectories, including empty ones.
Same as /S /E. May be used to modify /T.
/V Verifies the size of each new file.
/W Prompts you to press a key before copying.
/C Continues copying even if errors occur./I If destination does not exist and copying more than one file,
assumes that destination must be a directory./Q Does not display file names while copying.
/F Displays full source and destination file names while copying.
/L Displays files that would be copied.
/G Allows the copying of encrypted files to destination that does
not support encryption./H Copies hidden and system files also. /R Overwrites read-only files.
/T Creates directory structure, but does not copy files. Does not
include empty directories or subdirectories. /T /E includes
empty directories and subdirectories.
/U Copies only files that already exist in destination.
/K Copies attributes. Normal Xcopy will reset read-only attributes.
/N Copies using the generated short names.
/O Copies file ownership and ACL information.
/X Copies file audit settings (implies /O).
/Y Suppresses prompting to confirm you want to overwrite an
existing destination file.
/-Y Causes prompting to confirm you want to overwrite an
existing destination file.
/Z Copies networked files in restartable mode.
/B Copies the Symbolic Link itself versus the target of the link.
/J Copies using unbuffered I/O. Recommended for very large files.
The switch /Y may be preset in the COPYCMD environment variable.
This may be overridden with /-Y on the command line.
您的文件已连接，您可能需要使用文本编辑器编辑 folderB 文件，以手动将其分离到原始文件中。
请注意，这仅在文件夹 A 包含文本文件而不是二进制文件时才有效。原因是默认选项
copy是/A复制文本文件。复制二进制文件，需要指定参数/B.因此，如果文件夹 A 包含二进制文件，它们会被副本破坏或截断，因此无法挽救。
我可以复制预期目标位置导致包含源文件夹中所有文件的连接文件的情况（有点类似于 ZIP 文件，但里面有错误/错误的内容）。
为了解决这个问题，我建议您将“d:\folderB”重命名为，例如，“d:\backup_concatenated”（出于备份原因......）。
然后你可以重新开始使用：
这样，您将首先创建目标文件夹。其次，您可以将文件从“c:\folderA”复制到“d:\folderB”。
请注意：此复制命令不会复制任何子文件夹，并且会跳过隐藏/系统文件。这样，它不能用于创建源文件夹的完整备份副本！
为了让事情更方便一些，我更喜欢使用像“Total Commander”（或FAR Manager）这样的工具来完成这类工作......
对于文件夹，子文件夹的副本，是否包含文件，请使用
xcopy命令copy...