public static String executeShellCommandWithOutput(String command, String logFileName) {
        try {
            StringBuilder stdErr = new StringBuilder();
            int exitVal = TestShared.executeShellCommand(command, stdErr);
            if (exitVal != 0) { return ""; }
            String stdOut = TestShared.readFileAsString(TestShared.formatCardPersonalizedOutputLogFilePath(logFileName));

            return stdOut;
        }
        catch (IOException ex) {
            return "";
        }
    }