}

        final String[] cmds = stream(commands).get(stream -> stream.map(s -> {
            if ("$USERNAME".equals(s)) {
                return username;
            }
            if ("$PASSWORD".equals(s)) {
                return password;
            }
            return s;
        }).toArray(n -> new String[n]));
        final ProcessBuilder pb = new ProcessBuilder(cmds);
        if (workingDirectory != null) {