Find all duplicate items from SPList using PowerShell

Find all duplicate items from SharePoint list by using PowerShell.

ListItemsDuplicate.ps1

Param($WebUrl,$ListName);
Add-PSSnapin Microsoft.SharePoint.PowerShell

function Main($WebUrl,$ListName)
{
    Write-Host -Fore Green "Starting..."

    Write-Host -Fore Green "Web Url :" $WebUrl
    Write-Host -Fore Green "List Title :" $ListName  

    $web = Get-SPWeb -Identity $WebUrl
    $list = $web.Lists[$ListName]

    $AllDuplicates = $list.Items.GetDataTable() | Group-Object title | where {$_.count -gt 1}
 

if($AllDuplicates.Count -gt 0)
{
Write-Host -Fore Green "Duplicate items count: "  $AllDuplicates.Count

    foreach($duplicate in $AllDuplicates)
    {      
      $duplicate.Group | Format-Table @{Label="Title";Expression={$_["Title"]}},@{Label="Item Id";Expression={$_["ID"]}} -Autosize  
    }
}
else
{
Write-Host -Fore Green "Duplicate items count: 0"
}
   
    Write-Host -Fore Green "End..."
}

Start-Transcript

Main $WebUrl $ListName

Stop-Transcript

ListItemsDuplicate.bat

echo off

cd %SystemRoot%\system32\WindowsPowerShell\v1.0
powershell {Set-ExecutionPolicy Unrestricted}
cd /d %~dp0

SET WebUrl="http://servernme:7576/productcenter"
SET ListName="Marine ADR"


powershell.exe -command .\ListItemsDuplicate.ps1 '%WebUrl%' '%ListName%'
powershell {Set-ExecutionPolicy Restricted}
pause