Public/Get-DNfromFQDN.ps1
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function global:Get-DNfromFQDN { <# .EXTERNALHELP HelperFunctions.psm1-Help.xml #> [CmdletBinding()] [OutputType([String])] param ( [Parameter(Mandatory = $true, ValueFromPipeline = $false, Position = 0, HelpMessage = 'Enter the fully qualified domain name to convert')] [ValidateNotNullOrEmpty()] [string]$FQDN, [Parameter(Position = 1, HelpMessage = 'Enter the name of PS credential object')] [ValidateNotNullOrEmpty()] [pscredential]$Credential ) begin { $Error.Clear() Import-Module -Name ActiveDirectory -Force -ErrorAction Stop } process { foreach ($index in $FQDN) { $Dot = $index.IndexOf('.') $Object = [pscustomobject]@{ Hostname = $index.Substring(0, $Dot) Domain = $index.Substring($Dot + 1) } } if (($PSBoundParameters.ContainsKey("Credential")) -and ($null -ne $PSBoundParameters["Credential"])) { try { $DN = Get-ADObject -Identity $Object.HostName -Properties distinguishedName -Server $Object.Domain -Credential $Credential -ErrorAction Stop | Select-Object -ExpandProperty distinguishedName } catch { $errorMessage = "{0}: {1}" -f $Error[0], $Error[0].InvocationInfo.PositionMessage Write-Error $errorMessage -ErrorAction Continue } } else { try { $DN = Get-ADObject -Identity $Object.HostName -Properties distinguishedName -Server $Object.Domain -ErrorAction Stop | Select-Object -ExpandProperty distinguishedName } catch { $errorMessage = "{0}: {1}" -f $Error[0], $Error[0].InvocationInfo.PositionMessage Write-Error $errorMessage -ErrorAction Continue } } } end { if ($null -ne $DN) { return $DN } } } #End function Get-DNfromFQDN |