powershell script finding Windows 7 with/without service pack 1

I am trying to find an easy way to determine which computers have a service pack 1 installed and those that don't.  This is in a domain.  I need to export the results to a text file in CSV format.

This is what I have so far.

$Catalog = GC "C:\Scripts\Windows7\list.txt"
ForEach($Machine in $Catalog)
{
If (Test-Connection $Machine -Count 1 -Quiet)
    {$Version = (wmic /node:$Machine os get Caption,CSDVersion /value)
            Write-Output "$Machine $Version" | Out-File "\\util02\support\Scripts\Reports\ComputerList-WindowsVersion-ServicePack.txt" -Append}
Else
    {
    Write-Output "$Machine is not available" | Out-File "\\util02\support\Scripts\Reports\ComputerList-WindowsVersion-ServicePack.txt" -Append}}    

I am getting output but for each computer in the network that it should pick up the info I am getting blank.
Keith ShackletonIT Team Leader, Client Services, Information SystemsAsked:
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Vaseem MohammedCommented:
we can get the required results using below code.
Assuming that you are running the script againest AD based computers.
The approach is different, but the code is easy to understand and many additional functions can be added in future.
In this code you get only computers that have "service pack 1"
The -Filter is used so that we don't get computer accounts that are running OS other than Windows.
As you are using text file as input, you can chance the code as it fits ur requirements.
$report=@()
$catalog = Get-ADComputer -Filter 'OperatingSystem -like "*Windows*"' | select Name
foreach($machine in $catalog){

if(Test-Connection $machine.Name -Count 1 -Quiet){
    $data = Get-WmiObject -Class win32_operatingsystem -ComputerName $machine.Name | where{$_.csdversion -eq "Service Pack 1"} | select CSName, Caption, CSDVersion
    $report += $data
    }
}
$report | Export-Csv -Path c:\OS_SP.csv -nti
$report

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McKnifeCommented:
Why not use simple batch with ver.exe?
0
Keith ShackletonIT Team Leader, Client Services, Information SystemsAuthor Commented:
Ok, I was able to find another script that does exactly (and more) than what I need.  Here it is.

Import-Module activedirectory

$ADComputerProperties = @(`
"Operatingsystem",
"OperatingSystemServicePack",
"Created",
"Enabled",
"LastLogonDate",
"IPv4Address",
"CanonicalName"
)
 
$SelectADComputerProperties = @(`
"Name",
"OperatingSystem",
"OperatingSystemServicePack",
"Created",
"Enabled",
"LastLogonDate",
"IPv4Address",
"CanonicalName"
)
 
Get-ADComputer -Filter * -Properties $ADComputerProperties  |  `
select $SelectADComputerProperties | Out-GridView
0
Keith ShackletonIT Team Leader, Client Services, Information SystemsAuthor Commented:
Although not exactly what I needed this answer is another way to get the info.  Thanks.
0
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