Retrieve SharePoint last modified details using Powershell

Below is a simple script to retrieve the SharePoint webapplication last modified details along with the site/subsite URL and folder size.


Add-PSSnapin Microsoft.SharePoint.PowerShell -ErrorAction SilentlyContinue
$siteInfo = @();

Get-SPWebApplication http://yourwebapplication/ | Get-SPSite -Limit All | Get-SPWeb -Limit All|%{

$web = $_;
$listInfo = ""
$versionCount = ""
$strHomePage = $web.RootFolder.WelcomePage

       $WebSize = CalculateFolderSize($Web.RootFolder)
       $row = New-Object -TypeName PSObject
       $row | Add-Member -Name 'Site' -MemberType Noteproperty -Value $web.Title
       $row | Add-Member -Name 'URL' -MemberType Noteproperty -Value $web.Url
       $row | Add-Member -Name 'LastModifiedDate' -MemberType Noteproperty -Value $web.LastItemModifiedDate.tostring('dd/MMM/yyyy')
       $row | Add-Member -Name 'Size' -MemberType Noteproperty -Value $WebSize
       $siteInfo += $row
} 
$siteInfo | Export-CSV "D:\SiteName.csv" -NoTypeInformation


Function CalculateFolderSize($Folder)
{
    [long]$FolderSize = 0
  
    foreach ($File in $Folder.Files)
    {
   #Get File Size
        $FolderSize += $file.TotalLength;
    
  #Get the Versions Size
        foreach ($FileVersion in $File.Versions)
        {
            $FolderSize += $FileVersion.Size
        }
    }
 #Iterate through all subfolders
    foreach ($SubFolder in $Folder.SubFolders)
    {
  #Call the function recursively
        $FolderSize += CalculateFolderSize $SubFolder
    }
    return $FolderSize
}