The mentioned below script explains how to get the System Account of a Web Application in the SharePoint using a PowerShell script.
  1. $farmWebAppService = (Get-SPFarm).Services | ? { $_.typename -eq "Microsoft SharePoint Foundation Web Application" }
  5. foreach($webApp in $farmWebAppService.WebApplications)
  7. {
  9. Write-Host "Web Application: " $webApp.Name
  11. $collection = @()
  13. foreach ($zonepol in $webApp.Policies)
  15. {
  17. if($zonepol.IsSystemUser -eq $true)
  19. {
  21. $collection += $zonepol;
  23. }
  25. }
  29. if($collection.Count -eq 0)
  31. {
  33. Write-Host "System Account (application pool account): " $webApp.ApplicationPool.DisplayName " - " $webApp.ApplicationPool.Username
  35. }
  37. else
  39. {
  41. foreach($item in $collection)
  43. {
  45. Write-Host "System Account (policy setting): " $item.DisplayName " - " $item.UserName
  47. }
  49. }
  51. }