PowerShell Script to List All Users in All Groups in SharePoint site(SharePoint 2010)

we can run below PowerShell script in SharePoint 2010 management Shell to get  List All Users in All Groups in SharePoint site.

Inputs : $siteUrl,  $filename


$siteUrl="site url"  # url name
$web = Get-SPWeb $siteUrl
$site = $web.Site
$rootWeb = $site.RootWeb
$filename = "E:\Applications\application_users.csv"    # file path name
foreach($group in $site.RootWeb.SiteGroups)
{
   "Group:" + $group.Name | Out-File $filename -Append
   foreach ($user in $group.Users)
   {
       "User:" + $user.UserLogin +"     "+ "User Name: " +$user.name + "     " + "Email: " +$user.Email  | Out-File $filename -Append
   }
}