Get-OSVersion

function Get-OSVersion {
    <#
    .SYNOPSIS
    Версия текущей ОС
    .DESCRIPTION
    Функция для получения информации о версии текущей операционной системы
    .OUTPUTS
    [System.Management.Automation.PSCustomObject] объект с информацией об ОС
    .NOTES
    Автор:          iNNOKENTIY21
    .EXAMPLE
    Get-OSVersion
    .EXAMPLE
    Get-OSVersion | Format-Table
    .EXAMPLE
    (Get-OSVersion).ReleaseId
    #>

    $signature = @'
 [DllImport("kernel32.dll")]
 public static extern uint GetVersion();
'@

    Add-Type -MemberDefinition $signature -Name "OSVersion" -Namespace Win32API

    $OSVersion          = [Win32API.OSVersion]::GetVersion()
    $os                 = [System.BitConverter]::GetBytes($OSVersion)
    $build              = [byte]$os[2], [byte]$os[3]
    $Path               = "HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion"
    $ProductName        = Get-ItemProperty -Path $Path -Name ProductName
    $EditionID          = Get-ItemProperty -Path $Path -Name EditionID
    $ReleaseId          = Get-ItemProperty -Path $Path -Name ReleaseId
    $CurrentVersion     = Get-ItemProperty -Path $Path -Name CurrentVersion
    $InstallationType   = Get-ItemProperty -Path $Path -Name InstallationType
    $CurrentBuild       = Get-ItemProperty -Path $Path -Name CurrentBuild
    $CurrentBuildNumber = Get-ItemProperty -Path $Path -Name CurrentBuildNumber
    $UBR                = Get-ItemProperty -Path $Path -Name UBR

    [PSCustomObject]@{
        # Registry
        ProductName          = ($ProductName).ProductName
        EditionID            = ($EditionID).EditionID
        ReleaseId            = [int]($ReleaseId).ReleaseId
        CurrentVersion       = [double]($CurrentVersion).CurrentVersion
        InstallationType     = ($InstallationType).InstallationType
        CurrentBuild         = ($CurrentBuild).CurrentBuild
        CurrentBuildNumber   = ($CurrentBuildNumber).CurrentBuildNumber
        UBR                  = ($UBR).UBR

        # kernel32.dll GetVersion()
        Major                = $os[0]
        Minor                = $os[1]
        Build                = [System.BitConverter]::ToInt16($build, 0)

        # System.Environment
        EnvironmentOSVersion = [System.Environment]::OSVersion.Version

        # CimInstance
        CimInstanceOSVersion = (Get-CimInstance Win32_OperatingSystem).version
    }
}