For use on blog post: http://www.normansolutions.co.uk/post/using-powershell-to-check-all-pages-in-website

CheckWebPage.ps1

Clear-Host
$hsg = Invoke-WebRequest -Uri http://www.stmarys.eu/sitemap.aspx
$links = $hsg.Links | Where class -eq 'rmLink' | select  href 
$linksWithDomain =  $links | Foreach-Object{"http://www.stmarys.eu/" +  $_.href}
$linksWithDomain | foreach{
    $webClient = new-object System.Net.WebClient
    $webClient.Headers.Add("user-agent", "PowerShell Script")
       $output = ""
       $output = $webClient.DownloadString($_.toString())
       if ($output -like "*supportLists*") {
          "Dodgy Code On Page " + ($_.tostring())
       }
 }