递归复制 powershell 中目录和子目录的内容

Question

What specific syntax must be used to maintain subdirectory structure while recursively copying the contents of one directory to another directory in powershell?

The following command fails to retain the subdirectory structure:

Get-ChildItem -Path "sourcefoldername" -Recurse | Copy-Item -Destination "C:\\Users\\username\\destinationfoldername\\"  

Specifically, files located in sourcefoldername\\subdirectory get moved by the above command into the sourcefoldername directory. For example, if a source file is located at sourcefoldername\\subdirectory\\somefile.txt , the above code makes the mistake of moving the file to C:\\Users\\username\\destinationfoldername\\somefile.txt instead of correctly moving the file to C:\\Users\\username\\destinationfoldername\\subdirectory\\somefile.txt .

The correct result must move only the contents of sourcefoldername and not sourcefoldername itself, but must also retain the structure of the subdirectories, with all files remaining in the appropriate subdirectories instead of being moved up to the parent directory as the above code does.

Other examples we have found on the web have either erroneously copied the sourcefoldername itself, or have collapsed the contents as above, or have focused on only certain subdirectories, etc.

Answer 1

Don't use -Recurse on Get-ChildItem , instead use it on Copy-Item . To solve the problem you can get the files and folders one level down then use a delay-bind scriptblock to set their destination based on their name.

This example assumes that the destination folder already exists and it's absolute path is stored in the $destination variable.

$destination = 'path\to\destination'
Get-ChildItem path\to\source | Copy-Item -Destination {
    Join-Path $destination -ChildPath $_.Name
} -Recurse