Add a path to your $env:PATH

Add-ToPath.ps1

function Add-ToPath{
    param(
        [parameter(Mandatory=$true,position=0)][string] $pathToAdd
    )
    
    if(-NOT ($env:path.Contains($pathToAdd)))
    {
        Write-Host "Adding '$pathToAdd' to your Environment Path."
        $env:path += ";$pathToAdd"
        Set-ItemProperty -Path 'Registry::HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Session Manager\Environment' -Name PATH -Value $env:path
    } else {
        Write-Host "Your environment already contains '$pathToAdd'."
    }
}