The `Join-Path` cmdlet handles the slashes for you, so this will work fine:

```powershell
$output = join-path $cwd 'razor-winpe'
```

It doesn't really matter since this code is intended for Windows, but the purpose of that cmdlet is to insulate you from environment specific delimiters.  The funny thing is that PS only runs on Windows (though someone has supposedly revived a Mono port).

I tend to use `Join-Path` because its theoretically more future-proof, but you can get away with string interpolation also if you only ever intend to run on Windows.  Like Ruby, `"$foo"` interpolates, and `'$foo'` does not.

```powershell
$output= "$cwd\razor-winpe"
```