Backup do MYSQL no Linux

public String doBackup() throws RemoteException, IOException, InterruptedException {
        //faz o backup e retorna o nome do arquivo...

        StringBuffer s = new StringBuffer();

        s.append("#!/bin/bash\n");
        s.append("\n");

        //COLOCAR NESTAS VARIAVEIS A INFORMACAO DE SERVIDOR, SENHA, USUARIO, ETC DO MYSQL
        s.append("SERVER=localhost\n");
        s.append("USER=root\n");
        s.append("PORT=3306\n");
        s.append("PASS=123456\n");
        s.append("DB=meubanco\n");
        s.append("\n");


        File tmpDir = File.createTempFile("backupUltra", null);
        tmpDir.delete();
        tmpDir.mkdirs();

        s.append("TMPDIR=" + tmpDir.getAbsolutePath() + "\n");

        s.append("rm $TMPDIR\n");
        s.append("mkdir $TMPDIR\n");

        s.append("\n");
        s.append("mkdir -p /opt/ultraBackup\n");
        s.append("\n");
        s.append("mysqldump -h $SERVER --port $PORT -u $USER --password=$PASS --add-drop-database --add-drop-table --disable-keys --extended-insert --add-locks --single-transaction $DB | gzip -f > $TMPDIR/database.dump\n");
        s.append("\n");

        s.append("\n");

        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd-HHmmss");
        String TGZ = "backup-ultra-" + sdf.format(new Date()) + ".tar.gz";

        s.append("TGZ=/tmp/" + TGZ + "\n");
        s.append("\n");
        s.append("cd $TMPDIR\n");

        //String[] names = tmpDir.getAbsolutePath().split("[" + File.separator + "]");

        s.append("tar czf $TGZ *\n");
        s.append("\n");
        s.append("rm -fr $TMPDIR\n");
        s.append("\n");
        s.append("mv $TGZ /opt/ultraBackup\n");
        s.append("\n");


        File scriptBackup = File.createTempFile("backupUltra", ".sh");
  
        scriptBackup.createNewFile();
        scriptBackup.setExecutable(true);
        BufferedWriter bw = new BufferedWriter(new FileWriter(scriptBackup));
        bw.write(s.toString());
        bw.flush();
        bw.close();

        Process p = Runtime.getRuntime().exec(scriptBackup.getAbsolutePath());
        int resultado = p.waitFor();


        if (resultado == 0) {
            scriptBackup.delete();
            return "/opt/ultraBackup/" + TGZ;
        } else {
            throw new RemoteException("Saida de erro: " + resultado);
        }


    }