PowerShell: Creating Active Setup Registry Key

Here is a script I just wrote that will create an active setup registry key. It prompts you for the title, description, command line execution string, and version. It generates a unique GUID to name the registry key. It then generates the registry key file and places it in the same directory as the script was executed from.

You can download the script from here.

<#
     Author: Mick Pletcher
       Date: 06 March 2014
   Synopsis: This will generate the active setup registry key to
             deploy to machines so it iterates through every user that
             logs onto a machine.
Description: This will prompt for the title, brief description, version, and
             command line execution string. It then generates the .reg file
             and places it in the same directory as the script was executed from.
#>

Function GetRelativePath{  

    #Declare Local Memory
    Set-Variable -Name RelativePath -Scope Local -Force
    
    $RelativePath = (split-path $SCRIPT:MyInvocation.MyCommand.Path -parent)+"\"
    Return $RelativePath
    
    #Cleanup Local Memory
    Remove-Variable -Name RelativePath -Scope Local -Force
    
}
 
Function GenerateGUID {

    #Declare Local Memory
    Set-Variable -Name GetGUID -Scope Local -Force
    
    $GetGUID = [guid]::NewGuid()
    $GetGUID = $GetGUID.ToString().ToUpper()
    
    return $GetGUID

    #Cleanup Local Memory
    Remove-Variable -Name GetGUID -Scope Local -Force
    
}

Function GetKeyInfo {

    #Declare Local Memory
    Set-Variable -Name ComponentID -Scope Local -Force
    Set-Variable -Name Description -Scope Local -Force
    Set-Variable -Name StubPath -Scope Local -Force
    Set-Variable -Name Version -Scope Local -Force
    
    $ComponentID = Read-Host "Enter the title"
    $Description = Read-Host "Enter brief description"
    $Version = Read-Host "Enter the version number"
    $StubPath = Read-Host "Enter the command line execution string"
    $StubPath = $StubPath -replace '\\','\\'
    Return $ComponentID, $Description, $Version, $StubPath
    
    #Cleanup Local Memory
    Remove-Variable -Name ComponentID -Scope Local -Force
    Remove-Variable -Name Description -Scope Local -Force
    Remove-Variable -Name StubPath -Scope Local -Force
    Remove-Variable -Name Version -Scope Local -Force
    
}

Function GenerateRegKey ($RelativePath, $GUID, $KeyInfo) {

    #Declare Local Memory
    Set-Variable -Name File -Scope Local -Force
    Set-Variable -Name Text -Scope Local -Force
    
    $File = $RelativePath+"ActiveSetup.reg"
    If (Test-Path $File) {
        Remove-Item -Path $File -Force
    }
    New-Item -Name ActiveSetup.reg -Path $RelativePath -ItemType file -Force
    $Text = "Windows Registry Editor Version 5.00"
    Add-Content -Path $File -Value $Text -Force
    $Text = [char]13
    Add-Content -Path $File -Value $Text -Force
    $Text = "[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Active Setup\Installed Components\{"+$GUID+"}]"
    Add-Content -Path $File -Value $Text -Force
    $Text = "@="+[char]34+$KeyInfo[1]+[char]34
    Add-Content -Path $File -Value $Text -Force
    $Text = [char]34+"ComponentID"+[char]34+"="+[char]34+$KeyInfo[0]+[char]34
    Add-Content -Path $File -Value $Text -Force
    $Text = [char]34+"StubPath"+[char]34+"="+[char]34+$KeyInfo[3]+[char]34
    Add-Content -Path $File -Value $Text -Force
    $Text = [char]34+"Version"+[char]34+"="+[char]34+$KeyInfo[2]+[char]34
    Add-Content -Path $File -Value $Text -Force

    #Cleanup Local Memory
    Remove-Variable -Name File -Scope Local -Force
    Remove-Variable -Name Text -Scope Local -Force

}

#Declare Global Memory
Set-Variable -Name GUID -Scope Local -Force
Set-Variable -Name KeyInfo -Scope Local -Force
Set-Variable -Name RelativePath -Scope Local -Force

cls
$RelativePath = GetRelativePath
$GUID = GenerateGUID
$KeyInfo = GetKeyInfo
GenerateRegKey $RelativePath $GUID $KeyInfo

#Cleanup Global Memory
Remove-Variable -Name GUID -Scope Local -Force
Remove-Variable -Name KeyInfo -Scope Local -Force