Copy a file including it's relative path

Question

I need to copy a large number of files to a backup folder but I want to maintain their relative paths. I only need specific files; i.e.

C:\scripts\folder\File.ext1
C:\scripts\folder2\file2.ext2
C:\scripts\file3.ext1

But I only need to copy the ext1 files like so:

C:\backup\folder\File.ext1.bak
C:\backup\file3.ext1.bak

The source paths are of multiple depths. This is what I have to copy the files:

$files = gci -path C:\scripts\ -recurse -include *.ext1 
$files | % { Copy-Item $_ "$($_).bak"; move-item $_ -destination C:\backup\ }

This just dumps all the files into C:\backup\ and does not appear to get any of the paths. Not sure how that part would be done.

Answer 1

Something like this could work:

gci -path C:\scripts\ -recurse -include *.ext1 | 
  % { Copy-Item $_.FullName "$($_.FullName).bak"
      move-item $_.FullName -destination ($_.FullName -replace 'C:\\scripts\\','C:\backup\') }

It is not clever, but it's quick & dirty and works without a lot of effort.