Powershellでレジストリを参照してWindowsのバージョンを取得してみる

`r`n

<#
  Powershellの実行環境の情報を取得するスクリプト
  
  ファイル名:Get-WinVer.ps1
#>


# カレントバージョン
$CurrentVersionOld = (Get-ItemProperty -Path "HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion" -Name CurrentVersion).CurrentVersion

$text = "
スクリプトの実行環境
`r`n"

# プロダクト名
$ProductName = (Get-ItemProperty -Path "HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion" -Name ProductName).ProductName

$text = $text + "
プロダクト名
" + $ProductName +"
`r`n"

if ($CurrentVersionOld -eq 10.0) {
  $ReleaseID = (Get-ItemProperty -Path "HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion" -Name ReleaseID).ReleaseID
  $text = $text + "
バージョン
" + $ReleaseID +"
`r`n"
}

# ビルド番号
$CurrentBuild = (Get-ItemProperty -Path "HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion" -Name CurrentBuild).CurrentBuild
$UBR = (Get-ItemProperty -Path "HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion" -Name UBR).UBR
$text = $text + "
ビルド番号
" + $CurrentBuild + "." + $UBR +"
`r`n"

# Powershellのバージョン
$text = $text + "
Powershellバージョン
" + $PSVersionTable.PSVersion +"
`r`n"


# .NET Frameworkのバージョン
$release = (get-item 'HKLM:\SOFTWARE\Microsoft\NET Framework Setup\NDP\v4\Full').GetValue("Release")

$result = switch -Exact ($release)
{
"378389" {".NET Framework 4.5"}
"378675" {".NET Framework 4.5.1 (Windows 8.1 Or Windows Server 2012 R2)"}
"378758" {".NET Framework 4.5.1 (Windows 8 Or Windows 7 SP1 Or Windows Vista SP2)"} 
"379893" {".NET Framework 4.5.2"}
"393295" {".NET Framework 4.6 (Windows 10)"}
"393297" {".NET Framework 4.6"}
"394254" {".NET Framework 4.6.1 (Windows 10 November Update)"}
"394271" {".NET Framework 4.6.1"}
"394802" {".NET Framework 4.6.2 (Windows 10 Anniversary Update Or Windows Server 2016)"}
"394806" {".NET Framework 4.6.2"}
"460798" {".NET Framework 4.7 (Windows 10 Creators Update)"}
"460805" {".NET Framework 4.7"}
"461308" {".NET Framework 4.7.1 (Windows 10 Fall Creators Update)"}
"461310" {".NET Framework 4.7.1"}
"461808" {".NET Framework 4.7.2 (Windows 10 April 2018 Update )"}
"461814" {".NET Framework 4.7.2"}
}
$text = $text + "
.NET Framework
" + $result +"
`r`n"

# 閉じる
$text = $text + "
"

echo $text