Adding a new path to environment variable Path (Machine or User space)

AddPath.ps1

$newPath = "c:\scripts\"

Write-host Preparing environment
$currentPath = [Environment]::GetEnvironmentVariable("Path",[EnvironmentVariableTarget]::User) #or ::Machine
if ($currentPath -like '*'+$newPath+'*')
{
   Write-host 'System environment "Path" already contains ' $newPath
}
else {
    Write-host 'Adding ' $newPath ' to System "Path"'
    [Environment]::SetEnvironmentVariable("Path", $env:Path + ";"+$newPath, [EnvironmentVariableTarget]::User) #or ::Machine
}