GET ALL SHAREPOINT USERS IN THE FARM WITH POWERSHELL

reference :http://basementjack.com/sharepoint-2/get-all-users-in-the-farm-sort-of/

#getalluserseverywhere
Add-PSSnapin microsoft.sharepoint.powershell -ErrorAction SilentlyContinue
 
$timestamp = get-date -format "yyyyMMdd_hhmmtt"
$filenameStart = "AllFARMUsers"
$logfile = ("{0}{1}.csv" -f $filenamestart, $timestamp)
 
$header = "type,user,group,weburl,webname"
$header | out-file -FilePath $logfile
 
$iissitelist = get-spwebapplication 
foreach($onesite in $iissitelist)
{
 
 foreach ($SiteCollection in $onesite.sites)
 {
  write-host $SiteCollection -foregroundcolor Blue 
  foreach ($web in $SiteCollection.Allwebs)
  { 
    write-host "    " $web.url $web.name "users:" -foregroundcolor yellow
    # Write-host "        " $web.users | select name 
    foreach ($userw in $web.users)
    {
    #if ($userw -like "domain\*")
    #{
     write-host "        " $userw -foregroundcolor white
     #$msg = ("{0},{1} user:{2}" -f $web.url,$web.name, $userw)
     $msg = ("RootUser,{0},-,{1},{2}" -f $userw, $web.url,$web.name) 
     $msg | out-file -FilePath $logfile  -append
    #  }
      }
 
 
    foreach ($group in $web.Groups)
   {
      Write-host "        " $web.url $group.name: -foregroundcolor green
     foreach ($user in $group.users)
     { 
     # if ($user -like "Domain\*")
      #{   
        Write-host "            " $user -foregroundcolor white
        #$msg = ("{0},{1},group:{2}, user:{3}" -f $web.url, $web.name, $group, $user)
        $msg = ("GroupUser,{0},{1},{2},{3}" -f $user, $group, $web.url, $web.name)
        $msg | out-file -FilePath $logfile  -append
      #}
     }
   } 
   $web.Dispose()
  }
 
 }
}