安装脚本

run.sh

sudo apt install autoconf bison build-essential libssl-dev libyaml-dev \
  libreadline-dev zlib1g-dev libncurses5-dev libffi-dev libgdbm-dev  git -y
vim ~/.bashrc

export PATH="$HOME/.rbenv/bin:$PATH"
eval "$(rbenv init -)"
  
git clone https://github.com/rbenv/rbenv.git ~/.rbenv
git clone https://github.com/rbenv/ruby-build.git ~/.rbenv/plugins/ruby-build

. ~/.bashrc

CREATE USER 'newuser'@'localhost' IDENTIFIED BY 'password';
GRANT ALL PRIVILEGES ON * . * TO 'newuser'@'localhost';
FLUSH PRIVILEGES;

GRANT type_of_permission ON database_name.table_name TO ‘username’@'localhost’;
REVOKE type_of_permission ON database_name.table_name FROM ‘username’@‘localhost’;