Copy all files matching a pattern from one folder to another. A counter is pre-pended to ensure unique destination file names.

CopyMatchingFilesUniquely.ps1

#
# Copy all files matching a pattern from one folder to another. A counter is pre-pended to
# ensure unique destination file names.
#
Clear-Host

$sourceFolderFullPath = "C:\SOURCE_PATH"
$destinationFolderFullPath = "C:\DESTINATION_PATH"
$filter = "FILTER*.TXT"
$count = 1

Get-ChildItem -Path $sourceFolderFullPath -Filter $filter -Recurse | `
    ForEach-Object `
    { 
        Write-Host "Copying $($_.FullName)..."
        Copy-Item -Path $_.FullName `
                  -Destination "$destinationFolderFullPath\${count} - $_"
        $count++
    }