[void] [System.Reflection.Assembly]::LoadWithPartialName("Microsoft.SharePoint")
$farm = [Microsoft.SharePoint.Administration.SPFarm]::Local
$websvcs = $farm.Services | where -FilterScript {$_.GetType() -eq [Microsoft.SharePoint.Administration.SPWebService]}
$webapps = @()

$outputfile = "output.txt"
if (Test-Path $outputfile) { Remove-Item $outputfile }
Add-Content $outputfile "siteurl * weburl * webtemplate * webtype"

foreach ($websvc in $websvcs) {
  if ($websvc.TypeName -eq "Windows SharePoint Services Web Application") {
    foreach ($webapp in $websvc.WebApplications) {
      foreach($spsite in $webApp.Sites) 
      {
        $siteurl = $spsite.Url
        foreach($spweb in $spsite.AllWebs) 
        {
          $weburl = $spweb.Url
          $webtemplate = $spweb.WebTemplate
          if ($siteurl -eq $weburl)
          {
            $webtype = "Site Collection"
          } else {
            $webtype = "Sub site"
          }
          Add-Content $outputfile "$siteurl * $weburl * $webtemplate * $webtype"
          $spweb.Dispose()
        }
        $spsite.Dispose()
      }
    }
  }
}