Powershell: Get FQDN Hostname
To get FQDN of local computer:
[System.Net.Dns]::GetHostByName($env:computerName)
or
[System.Net.Dns]::GetHostByName($env:computerName).HostName
To get FQDN of Remote computer:
[System.Net.Dns]::GetHostByName('mytestpc1')
or
For better formatted value use:
[System.Net.Dns]::GetHostByName('mytestpc1').HostName
- For remote machines make sure host is reachable.
Local Computer FQDN via dotNet class
[System.Net.Dns]::GetHostEntry([string]$env:computername).HostName
or
[System.Net.Dns]::GetHostEntry([string]"localhost").HostName
Reference:
Dns Methods (System.Net)
note: GetHostByName method is obsolete
Local computer FQDN via WMI query
$myFQDN=(Get-WmiObject win32_computersystem).DNSHostName+"."+(Get-WmiObject win32_computersystem).Domain
Write-Host $myFQDN
Reference:
Win32_ComputerSystem class
How about: "$env:computername.$env:userdnsdomain"
This actually only works if the user is logged into a domain (i.e. no local accounts), logged into the same domain as the server, and doesn't work with disjointed name space AD configurations.
Use this as referenced in another answer:
$myFQDN=(Get-WmiObject win32_computersystem).DNSHostName+"."+(Get-WmiObject win32_computersystem).Domain ; Write-Host $myFQDN