Inventory Out-File with a new row - windows

Question

I have an Inventory Powershell script that I am trying to output into a csv. My goal is to output each execution of the script in a separate row going down their columns.
I've tried Export-Csv, but since i'm using variables, the csv displays (i'g guessing) metadata.
$ComputerName = Get-WmiObject Win32_OperatingSystem | select -ExpandProperty CSName
$OS_Name = Get-WmiObject Win32_OperatingSystem | Select-Object -ExpandProperty Caption
$OS_Architecture = Get-WmiObject Win32_OperatingSystem | select -ExpandProperty OSArchitecture
$System_Manufacturer = Get-WmiObject win32_computersystem | select -ExpandProperty Manufacturer
$Model = Get-WmiObject win32_computersystem | select -ExpandProperty Model
$CPU_Manufacturer = Get-WmiObject Win32_Processor | select -ExpandProperty Name
$Disk_Size_GB = Get-WmiObject win32_diskDrive | Measure-Object -Property Size -Sum | % {[math]::round(($_.sum /1GB),2)}
$Physical_Memory_GB = Get-WMIObject -class Win32_PhysicalMemory | Measure-Object -Property capacity -Sum | % {[Math]::Round(($_.sum / 1GB),2)}
$Version=(Get-ItemProperty -Path "HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion" -Name ReleaseId).ReleaseId
$InstallDate= systeminfo | find /I “Install Date”
$Assettag=(Get-WmiObject -Class Win32_SystemEnclosure | Select-Object SMBiosAssetTag).SMBiosAssetTag
$SerialNumber = (Get-WmiObject -Class Win32_BIOS | Select-Object SerialNumber).SerialNumber
($Assettag, $ComputerName, $System_Manufacturer, $Model, $OS_Name, $Version, $SerialNumber | Format-Table | Out-File C:\Users\1\Desktop\Newinvent.csv )
I expect each row to be filled with each execution
Thanks

Answer 1

If you want to use Export-Csv, you need to have an object with properties that contain the names and values you want to export. One way to do this is to create a [PSCustomObject] with all of your properties defined in a hash table. You can pipe that custom object to the Export-Csv command.
[PSCustomObject]#{"ComputerName" = $ComputerName
"OS_Name" = $OS_Name
"OS_Architecture" = $OS_Architecture
"System_Manufacturer" = $System_Manufacturer
"Model" = $Model
"CPU_Manufacturer" = $CPU_Manufacturer
"Disk_Size_GB" = $Disk_Size_GB
"Physical_Memory_GB" = $Physical_Memory_GB
"Version" = $Version
"InstallDate" = $InstallDate
"Assettag" = $Assettag
"SerialNumber" = $SerialNumber
} | Export-Csv -Path file.csv -NoTypeInformation -Append

Answer 2

And try to look at the result from Get-ComputerInfo - most of your needs are satisfied there.

Answer 3

I'd avoid the time consuming Systeminfo
> (Measure-Command {$systeminfo=(systeminfo) 2>$NULL}).Totalseconds
3,0428012
As well as Get-ComputerInfo
$OldProgressPreference = $ProgressPreference
$ProgressPreference = 'SilentlyContinue'
(Measure-Command {$ComputerInfo = Get-ComputerInfo}).Totalseconds
3,1837208
$ProgressPreference = $OldProgressPreference
And use an optimized version of your script which gets/converts InstallDate from registry:
> (Measure-Command{Q:\Test\2019\06\03\SO_56429703.ps1}).TotalSeconds
1,635074
Get-Content file.csv
## Q:\Test\2019\06\03\SO_56429703.ps1
function RoundGB($Size){
[math]::round(($Size/1GB),2)
}
$Win32OS = Get-WmiObject Win32_OperatingSystem
$Win32CS = Get-WmiObject Win32_ComputerSystem
$CurrVer = 'HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion'
$InstDate= [timezone]::CurrentTimeZone.ToLocalTime([datetime]'1/1/1970').AddSeconds(
(Get-ItemProperty $CurrVer).InstallDate)
$inventory = [PSCustomObject]#{
ComputerName = $Win32OS.CSName
OSName = $Win32OS.Caption
OSArchitecture = $Win32OS.OSArchitecture
SystemManufacturer= $Win32CS.Manufacturer
Model = $Win32CS.Model
CPUManufacturer = (Get-WmiObject Win32_Processor).Name
DiskSizeGB = RoundGB (Get-WmiObject Win32_DiskDrive | Measure-Object Size -Sum).Sum
PhysicalMemoryGB = RoundGB (Get-WMIObject Win32_PhysicalMemory | Measure-Object capacity -Sum).Sum
Version = (Get-ItemProperty -Path $CurrVer -Name ReleaseId).ReleaseId
InstallDate = $InstDate
Assettag = (Get-WmiObject Win32_SystemEnclosure).SMBiosAssetTag
SerialNumber = (Get-WmiObject Win32_BIOS).SerialNumber
}
$Inventory | Export-Csv -Path file.csv -NoTypeInformation -Append