## How to Recursive Search and Copy
In powershell (right click the start menu and you'll get the Win+X menu)

```powershell
cd $Env:UserProfile\Documents
Set-Variable -name crate -value $Env:UserProfile\Documents\TheCrate
mkdir $crate
cd SourceDir 
get-childitem -recurse -include *.wav | foreach { cp $_ $crate }
```
That will put everything into a single folder, which is probably what you want.
Even if not, you can then use the file manager to organise things afterwards.

## Copy Preserving Directory Structure
```powershell
$source = $Env:UserProfile\Documents\SourceDir
cd $source
$tgt = $Env:UserProfile\Documents\TargetPath
if( -not (test-path -path $tvt) ) { mkdir $tgt }
Get-ChildItem -recurse -include *.wav | select-object -first 100 | foreach { 
    $r = resolve-path -relative $_; 
    $t = $tgt + "\" + $r; 
    $d = split-path -parent $t; 
    if( -not (test-path -path $d) ) { mkdir $d }; 
    if( -not (test-path -path $t) ) { cp $_ $t };
}
```

## Macos Zips
See [this stackoverflow](https://stackoverflow.com/questions/8677628/recursive-file-search-using-powershell)
for a few more examples of this kind of search.

Deleting those annoying `._whatever` files you get when unarchiving a `.zip` on Windows or Linux.
```powershell
get-childitem -path c:\path\to\files -include ._* -Recurse
get-childitem -path d:\mydir -include ._* -Recurse | foreach { echo $_ }
get-childitem -include ._* -Recurse | foreach { Remove-Item $_ }    # will start from current directory
```
for reference, on Windows under Cygwin or WSL, you can use
```bash
find /path/to/files -name ._\* -exec rm -v {} \;
```