Powershell: Loop through sub-directories and move files

Question

I'm targeting simple task. I would like to create folder of constant name "jpg" in all subfolders of supplied root folder "D:Temp\IMG" and move all files in every subfolder with extension ".jpg" to that newly created "jpg" folder.

I thought I'll be able to solve this by myself without deep knowledge of powershell, but it seems I have to ask.

So far, I created this code

$Directory = dir D:\Temp\IMG\ | ?{$_.PSISContainer};
foreach ($d in $Directory) {
Write-Host "Working on directory $($d.FullName)..."
Get-ChildItem -Path "$($d.FullName)" -File -Recurse -Filter '*.jpg' |
  ForEach-Object {
      $Dest = "$($d.DirectoryName)\jpg"
      If (!(Test-Path -LiteralPath $Dest))
      {New-Item -Path $Dest -ItemType 'Directory' -Force}

      Move-Item -Path $_.FullName -Destination $Dest
  }
}

What I'm getting out of this is infinite loop of folder "jpg" creation in every subfolder. Where is my code and logic failing here, please?

Answer 1

The following script would do the job.

$RootFolder = "F:\RootFolder"

$SubFolders = Get-ChildItem -Path $RootFolder -Directory

Foreach($SubFolder in $SubFolders)
{ 
    $jpgPath = "$($SubFolder.FullName)\jpg"
    New-Item -Path $jpgPath -ItemType Directory -Force

    $jpgFiles = Get-ChildItem -Path $SubFolder.FullName -Filter "*.jpg"

    Foreach($jpgFile in $jpgFiles)
    {
        Move-Item -Path $jpgFile.FullName -Destination "$jpgPath\"
    }
}