List all sites within site collection in ShaharePoint 2010 using Powershell

[System.Reflection.Assembly]::LoadWithPartialName("Microsoft.SharePoint") > $null
$siteUrl = Read-Host "Enter Site URL"
$rootSite = New-Object Microsoft.SharePoint.SPSite($siteUrl)
$spWebApp = $rootSite.WebApplication
$count = 0
           write-host "Site Collections"
           write-host ""
    foreach ($site in $spWebApp.Sites) {
        $count++
        write-host "Site Collections URL --> -->" $site.URL
           write-host ""
           write-host "SubSites"
           write-host ""
    foreach ($web in $site.AllWebs) {
        $count++
        write-host "SubSite URL --> --> -->" $web.URL
        write-host ""
    }
}
write-host "Total Count :" $count

[System.Reflection.Assembly]::LoadWithPartialName("Microsoft.SharePoint") > $null
$siteUrl = Read-Host "Enter Site URL"
$rootSite = New-Object Microsoft.SharePoint.SPSite($siteUrl)
$spWebApp = $rootSite.WebApplication
$count = 0
           write-host "Site Collections"
           write-host ""
    foreach ($site in $spWebApp.Sites) {
        $count++
        write-host "Site Collections URL --> -->" $site.URL
           write-host ""
           write-host "SubSites"
           write-host ""
    foreach ($web in $site.AllWebs) {
        $count++
        write-host "SubSite URL --> --> -->" $web.URL 
        write-host ""
    } 
}
write-host "Total Count :" $count - See more at: http://www.msprojectnow.com/Knowledge/Blog/tabid/142/entryid/601/PowerShell-script-to-list-all-sites-with-site-collection.aspx#sthash.CsifXBsC.dpuf