PowerShell script for moving RAW-files with no accompanying JPG-files

cleanRawFiles.ps1

# Simple PowerShell script to iterate files in a folder, look for the defined RAW-file extension and see if it has an accompanying .JPG-file
# If it does not, move it into the "clean"-folder

# Create folder selector
Add-Type -AssemblyName System.Windows.Forms
$browser = New-Object System.Windows.Forms.FolderBrowserDialog
$null = $browser.ShowDialog()
# Store selected path in var
$path = $browser.SelectedPath

# Set the RAW extension used
$rawExtension = ".ARW"
$jpgExtension = ".JPG"

# Set folder for moving RAW files with no JPG
$bkpFolder = "$path\!clean"
# Create folder if it does not exists
If (!(test-path -PathType container $bkpFolder)) {
	Write-Output "No clean folder, creating"
	New-Item -ItemType Directory -Path $bkpFolder
}

# Iterate files in the selected folder
Get-ChildItem -Path $path | ForEach-Object {
	# Get filename without extension
	$baseName = $_.BaseName
	# Get the extension of the file
	$extension = $_.Extension
	# If the extension ois the same as our defined extension (line 9 $rawExtension)
	if ($extension -eq $rawExtension) {
		# Check if a JPG with the same name exists
		if ((Test-Path "$path\$baseName$jpgExtension")) {
			# And do nothing except output that no action will be taken
			Write-Output "$baseName$jpgExtension and $baseName$rawExtension exists, no action taken"
		}
		else {
			# If no JPG exists, move the RAW file into the clean-folder and output a message
			Move-Item -Path $_ -Destination $bkpFolder
			Write-Output "No $jpgExtension exists, moving $baseName$rawExtension to clean folder"
		}
	}
}