$ sudo apt install nodejs npm
$ node -v
v16.13.1

$ sudo apt install mysql-server
$ sudo apt install libmysqlclient-dev

# check the status of mysql
$ sudo apt install net-tools
$ sudo netstat -tap | grep mysql

# set the password of the user “root”
$ sudo mysql
> update mysql.user set authentication_string=PASSWORD("123456"), plugin="mysql_native_password" where user="root";
> flush privileges;
> exit;

# restart the mysql server
$ sudo /etc/init.d/mysql restart

# initialize the db
$ mysql -u root -p
> create database test;
> use test;
> create table user (name varchar(100) not null, password varchar(100) not null);
> exit;

$ sudo mkdir /vault
$ sudo chmod 777 /vault

$ cd kernel
$ make
$ sudo insmod VaultModule.ko

$ cd gui
$ npm install

$ cd node_modules/electron
$ node install.js

$ cd netlink
$ gcc -c -fPIC -o netlink.o netlink.c
$ gcc -shared -o libnetlink.so netlink.o

$ cd ..
$ npm start