mysql uninstall and install

MySQL is a commonly used relational database management system that can be used for tasks such as website development, data storage, and data analysis. For different systems, the installation and uninstallation methods of MySQL may also be different. In this article, we will briefly introduce how to uninstall and install MySQL in Windows and Linux systems.

1. Uninstall MySQL under Windows system

1. Open the "Computer" - "Control Panel" - "Programs" - "Programs and Features" option.
2. Find the MySQL program, click on it, and select the "Uninstall" option.
3. In the pop-up uninstall window, you can choose to delete the MySQL configuration file and data files. If you wish to reinstall MySQL, you can keep these files.
4. After the uninstallation is completed, open the file browser, browse to the installation path of MySQL, and manually delete other related files and folders. For example, if the installation path of MySQL is C:Program FilesMySQL, you can delete this directory and its subdirectories.

2. Installation of MySQL under Windows system

1. First, download the MySQL installation program suitable for your system version from the MySQL official website.
2. Double-click the downloaded installation program and follow the prompts to complete the MySQL installation process.
3. During the installation process, you can choose to set the MySQL port number, installation path, root user password and other information.
4. After the installation is complete, open the Windows service list and you can see that the MySQL service is already running. If the MySQL service is not started, you can start it manually.
5. In the MySQL installation path, you can find the command line tool mysql.exe. You can use mysql.exe to create, manage and maintain MySQL databases.

3. Uninstall MySQL under Linux system

1. Open the Linux terminal and use the following command to uninstall MySQL: sudo apt-get remove mysql-server
2. When uninstalling MySQL, the system will automatically ask whether to delete the MySQL configuration file. Choose whether to delete it based on your own situation.
3. After uninstallation is complete, use the following command to delete the MySQL data directory: sudo rm -rf /var/lib/mysql/
4. During the deletion process, please make sure to back up important files in the MySQL data directory. document.

4. Installation of MySQL under Linux system

In Linux system, the version and installation method of MySQL may be different. Following are the simple steps to install MySQL in Ubuntu system:

1. Open a Linux terminal and use the following command to install MySQL: sudo apt-get install mysql-server
2. During the installation process, The system will ask you to set the MySQL root password. Please keep it properly.
3. After the installation is complete, use the following command to check whether the MySQL service is running: systemctl status mysql
4. Enter the "mysql" command in the terminal to enter the command line mode of MySQL. SQL statements can be used to create, manage and maintain MySQL databases.

Summary:

This article briefly introduces how to uninstall and install MySQL in Windows and Linux systems. Since the MySQL versions and installation methods of different operating systems may be different, we need to carefully check and follow the installation instructions in the official documentation. Uninstalling and installing MySQL is not difficult, and as long as you follow the correct steps, you can complete these tasks quickly.

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