$addPath = $pwd.Path +'\scripts'
if (Test-Path $addPath){
$regexAddPath = [regex]::Escape($addPath)
$arrPath = $env:Path -split ';' | Where-Object {$_ -notMatch "^$regexAddPath\\?"}
$env:Path = ($arrPath + $addPath) -join ';'
$env:Path -split ';'
} else {
Throw "'$addPath' is not a valid path."
}