Specifying Current Domain Name of Local Machine in PowerShell

If a PowerShell script requires the input of a domain name after a parameter, is there a way to just generically specify the domain name of the local machine that you're on?  

e.g.
New-ADGroup -Server localhost:60000 -Path "OU=AccountDeptOU,DC=AppNC" -Name AccountLeads -GroupScope DomainLocal  -GroupCategory Distribution

In this example script the "path" parameter requires the value of DC (Domain Controller) to be AppNC.  If I was going to take this script to other domain environments then it obviously won't work because the domain names would be different.

Is there some kind of value I can put instead to just say,"This local machine's current domain name." If that makes any sense.  

I'd appreciate any insight.  Thanks :)
emag50Asked:
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David Johnson, CD, MVPOwnerCommented:
you could use $env.logonserver
emag50Author Commented:
So the new syntax would look something like this instead?  I'm trying different things and rearranging the syntax but I can't get it to work.  

New-ADGroup -Server localhost:60000 -Path "OU=AccountDeptOU,DC=$env.logonserver" -Name AccountLeads -GroupScope DomainLocal  -GroupCategory Distribution

I'm also trying it with the different examples that Microsoft has on their technet site but still no luck.  Only works when I explicitly define the domain names' prefix and suffix (e.g. contoso.test would be dc=contoso,dc=com) as shown below:

New-ADGroup -Name TestGroup -SamAccountName Administrators -GroupCategory Security -GroupScope Global -DisplayName TestGroup -Path "CN=TestOU,DC=Contoso,DC=Com" -Description "Members of this group are Test Users"

Not quite sure how to replace the bold portion in a fashion that will give me the current domain name value.  

FYI I'm just trying to create a new group to place in a specific OU but this info doesn't matter much.  Thanks for your input.
David Johnson, CD, MVPOwnerCommented:
$dn = get-domain $DNSName
New-ADGroup -Name TestGroup -GroupCategory Security -GroupScope Global -DisplayName TestGroup -Path $dn -Description "Members of this group are Test Users"

 function Get-Domain {
 #Retrieve the Fully Qualified Domain Name if one is not supplied division.domain.root
 $fqdn = $env:logonserver
 $FQDNArray = $FQDN.split(".")
 # Add A Separator of ','
 $Separator = ","
 for ($x = 0; $x -lt $FQDNArray.Length ; $x++)
 { 
 #If it's the last item in the array don't append a ','
 if ($x -eq ($FQDNArray.Length - 1)) { $Separator = "" }
 [string]$DN += "DC=" + $FQDNArray[$x] + $Separator
 }
 return $DN
}

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http://bit.ly/1EStl1v
oBdACommented:
"DC" in a distinguished name does not stand for "Domain Controller", it stands for "Domain Component".
You can use something like this:
"OU=AccountDeptOU,DC=$($ENV:USERDNSDOMAIN.Replace('.', ',DC='))"

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Or to make it easier to read in a script:
$DomainComponent = "DC=$($ENV:USERDNSDOMAIN.Replace('.', ',DC='))"
New-ADGroup -Server localhost:60000 -Path "OU=AccountDeptOU,$DomainComponent" -Name AccountLeads -GroupScope DomainLocal  -GroupCategory Distribution

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emag50Author Commented:
This worked perfectly.  Thanks a lot!
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