Powershell: How to filter for specific groups of WMI classes

$ns
function enumclasses
{
    $classnames = Get-WmiObject -namespace $ns -class Meta_Class | select name  
    foreach($cn in $classnames)
    {
        $pos = $cn.Name.IndexOf("Win32")
        if($pos -gt -1)
        {
            write-host $cn.Name
        }   
    }        
}  

$ns = "root\cimv2"
enumclasses

Powershell: How to enumerate through WMI Classes

$ns
function enumclasses
{
    $classnames = Get-WmiObject -namespace $ns -class Meta_Class | select name  
    foreach($cn in $classnames)
    {
            write-host $cn.Name  
    }        
}  

$ns = "root\cimv2"
enumclasses

Powershell: How to recursively enumerate through namespaces

$ns
function enumNamespaces
{
    write-host $ns
    $Names = Get-WmiObject -namespace $ns -class __NameSpace | select name  
    foreach($n in $Names)
    {
         $ns = $ns + "\" + $n.Name
         enumNamespaces
         $ns = $ns.Replace("\" + $n.Name, "")     
    }        
}  

$ns = "root"
enumNamespaces

How to use Powershell to pad output using echo

$objs = Get-WMIObject -namespace root\cimv2 -class Win32_Battery

foreach($obj in $objs)
{
    foreach($prop in $obj.Properties)
    {
         echo $prop.Name.PadRight(30, " ") = $prop.Value
    }
}

How to use Powershell to pad output using write-host

$objs = Get-WMIObject -namespace root\cimv2 -class Win32_Battery

foreach($obj in $objs)
{
    foreach($prop in $obj.Properties)
    {
         write-host $prop.Name.PadRight(30, " ") = $prop.Value
    }
}

How to use Powershell to create a database using ADOX

function GetValue
{
    param
    (
    [string]$Name,
    [object]$obj
    )

    [string]$PName = $Name + " = "
    [string]$tempstr = $obj.GetObjectText_(0)

    $pos = $tempstr.IndexOf($PName)
    if ($pos -gt 0)
    {
        $pos = $pos + $PName.Length
        $tempstr = $tempstr.SubString($pos, ($tempstr.Length - $pos))
        $pos = $tempstr.IndexOf(";")
        $tempstr = $tempstr.SubString(0, $pos)
        $tempstr = $tempstr.Replace('"', "")
        $tempstr = $tempstr.Replace("}", "")
        $tempstr = $tempstr.Replace("{", "")
        $tempstr = $tempstr.Trim()
        if($tempstr.Length -gt 14)
        {
            if($obj.Properties_.Item($Name).CIMType -eq 101)
            {
                [System.String]$tstr = $tempstr.SubString(4, 2)
                $tstr = $tstr + "/"
                $tstr = $tstr + $tempstr.SubString(6, 2)
                $tstr = $tstr + "/"
                $tstr = $tstr + $tempstr.SubString(0, 4)
                $tstr = $tstr + " "
                $tstr = $tstr + $tempstr.SubString(8, 2)
                $tstr = $tstr + ":"
                $tstr = $tstr + $tempstr.SubString(10, 2)
                $tstr = $tstr + ":"
                $tstr = $tstr + $tempstr.SubString(12, 2)
                $tempstr = $tstr
            }
        }
        return $tempstr
    }
    else
    {
        return ""
    }
}


    $l = new-object -comobject Wbemscripting.SWbemLocator
    $svc = $l.ConnectServer(".", "root\cimv2")
    $svc.Security_.AuthenticationLevel=6
    $svc.Security_.ImpersonationLevel=3
    $ob = $svc.Get("Win32_Process")

    $ocat = new-object -comobject ADOX.Catalog
    $ocat.Create("Provider=Microsoft.Jet.Oledb.4.0;Data Source=" + System.Environment.CurrentDirectory + "\Process.mdb")
    $otable = new-object -comobject ADOX.Table
    $otable.Name = "Processes_properties"

    foreach($prop in $ob.Properties_)
    {
        $ocolumn = new-object -comobject ADOX.Column
        $oColumn.Name = $prop.Name
        $oColumn.Type = 203
        $otable.Columns.Append($oColumn)
    }

    $ocat.Tables.Append($otable)
   
    $objs = $ob.Instances_(0)

    $rs = new-object -comobject ADODB.Recordset
    $rs.ActiveConnection = "Provider=Microsoft.Jet.Oledb.4.0;Data Source=" + System.Environment.CurrentDirectory + "\Process.mdb"
    $rs.CursorLocation = 3
    $rs.LockType = 3
    $rs.Source = "Select * From Processes_Properties"
    $rs.Open()

    foreach($obj in $objs)
    {
        $rs.AddNew()
        foreach($prop in $obj.Properties_)
        {
            $rs.Fields($prop.Name).Value = GetValue $prop.Name $obj
        }
        $rs.Update()
    }

How to use Powershell to discover the current Domain using two lines of code

$iret = [System.Reflection.Assembly]::LoadWithPartialName("System.DirectoryServices")
$Domain = [System.DirectoryServices.ActiveDirectory.Domain]::GetCurrentDomain