Simple powershell function that returns the path to a local personal dropbox instance.

GetDropboxPath.ps1

function GetDropboxPath
{
    $jsonPartialPath      = "\Dropbox\info.json"
    $jsonAppdataPath      = $env:APPDATA + $jsonPartialPath
    $jsonLocalAppdataPath = $env:LOCALAPPDATA + $jsonPartialPath

    if (test-path $jsonAppdataPath)
    {
        $jsonPath = $jsonAppdataPath
    }
    elseif (test-path $jsonLocalAppdataPath)
    {
        $jsonPath = $jsonLocalAppdataPath
    }
    else
    {
        throw "Neither JSON path is reachable. Is Dropbox installed? See: https://www.dropbox.com/help/4584"
    }

    $json = (get-content $jsonPath | convertfrom-json)
    return $json.personal.path
}