private/core/Test-DnsName.ps1
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function Test-DnsName { <# .SYNOPSIS Tests, whether the specified DNS name resolves. .DESCRIPTION Tests, whether the specified DNS name resolves. .PARAMETER Name The dns name to resolve. .EXAMPLE PS C:\> Test-DnsName -Name microsoft.com Returns, whether the name "microsoft.com" can be resolved using the DNS system. #> [OutputType([bool])] [CmdletBinding()] param ( [Parameter(Mandatory)] [string] $Name ) try { # Resolve-DnsName is windows only, .NET methods work xplat $resolution = [System.Net.Dns]::GetHostEntry($Name) $resolution -as [bool] } catch { Write-PSFMessage -Level Warning -Message "Error resolving domain {0}" -StringValues $Name -ErrorRecord $_ -Target $Name $false } } |