Func-Get-CmUrl.ps1

<# 
  Function used to find the CM Url
#>

function Get-CmUrl($item){
    $site = [Sitecore.Sites.SiteContext]::GetSite("website")

    New-UsingBlock(New-Object -TypeName "Sitecore.Sites.SiteContextSwitcher" -ArgumentList $site) {
        $urlOptions = [Sitecore.Links.LinkManager]::GetDefaultUrlOptions()
        $urlOptions.AlwaysIncludeServerUrl = $True
        $urlOptions.ShortenUrls = $True
        $urlOptions.SiteResolving = $True;
        $url = [Sitecore.Links.LinkManager]::GetItemUrl($item, $urlOptions)
        return $url.TrimEnd('/')
    }
}