Export reg value to csv - windows

Question

i have 1 question:
i need verify 3 reg key on 20 pc and export result on csv file.
I used this string
Get-ItemProperty -Path hklm:"\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\" -Name "keyname" | Export-csv -path "csvpath"
and recive the all value for thi key but i don't need see the "PSPath, PSParentPath, PSChildName, PSDrive, PSProvider.
now i was thinking of making a script with variables to simplify it, but at this point i would like it to tell me even if the key was not found and the basic thing i can run it from the DC to all machines (about 20).
this could be a starting point
$key1 = name key 1
$key2 = name key 2
$key3 = name key 3
$hostname= hostname
$regkey= get-itemprperty -path ecc....
and now i'm seeing how you implement the verification loop and export everything to csv
thx

Answer 1

To verify the key existence, use Test-Path.
Computer names and Key names as arrays of strings.
No experience with remoting, I think you'll be using Invoke-Command, but this should give you an idea of looping and getting all non-PS properties:
Computer1
Computer2
Computer3
'# -split '\n'
$keyNames = #'
KeyName1
KeyName2
KeyName3
`# -split '\n'
ForEach ( $Comoputer in $Computers) {
ForEach ( $KeyName in $KeyNames ) {
If ( Test-Path $KeyName )
{
$AllProps = ($key = Get-Item $KeyName).Property
(Get-ItemProperty $key).PSobject.Properties | where name -in $AllProps | select Name , Value
<< Create output >>
}
Else
{
"$ComputerName: $KeyName not found."
}
}
} | Export-Csv "\\Path\to\CsvFile"

Answer 2

To probe multiple computers for 3 registry properties and output the result in a CSV file, you can use Invoke-Command like below:
$computers = 'pc01','pc02','pc03' # etc. the 20 computers you want to probe
$propertynames = 'property1','property2','property3' # you may use wildcards here
# loop over the computers
$result = foreach ($computer in $computers) {
if (!(Test-Connection -ComputerName $computer -Count 1 -Quiet)) {
Write-Warning "Computer '$computer' is not responding"
continue # skip this computer and proceed with the next
}
Invoke-Command -ComputerName $computer -ScriptBlock {
$regPath = "HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon"
# create a temporary Hashtable to store the items
$hash = [ordered]#{}
# loop over the properties
foreach ($prop in $using:propertynames) {
$entry = Get-ItemProperty -Path $regPath -Name $prop -ErrorAction SilentlyContinue
if ($entry) {
$hash['ComputerName'] = $using:computer
$entry = $entry | Select-Object * -ExcludeProperty PS*
# use a loop in case you have used wildards for the property names
foreach ($item in $entry.PsObject.Properties) {
$hash[$item.Name] = $item.Value
}
}
else {
Write-Warning "Could not find property '$prop'"
}
}
if ($hash.Count) {
# output the hash converted to PSObject
[PsCustomObject]$hash
}
}
}
# remove the properties added by Invoke-Command
$result = $result | Select-Object * -ExcludeProperty PS*,RunspaceId
# output to gridview
$result | Out-GridView
# output to CSV file
$result | Export-Csv -Path 'X:\Path\To\TheResults.csv' -NoTypeInformation