Example tutorial on modifying coding under Linux
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MySQL cannot run directly on Android, but it can be implemented indirectly by using the following methods: using the lightweight database SQLite, which is built on the Android system, does not require a separate server, and has a small resource usage, which is very suitable for mobile device applications. Remotely connect to the MySQL server and connect to the MySQL database on the remote server through the network for data reading and writing, but there are disadvantages such as strong network dependencies, security issues and server costs.

Linux is widely used in servers, embedded systems and desktop environments. 1) In the server field, Linux has become an ideal choice for hosting websites, databases and applications due to its stability and security. 2) In embedded systems, Linux is popular for its high customization and efficiency. 3) In the desktop environment, Linux provides a variety of desktop environments to meet the needs of different users.

Frequently asked questions and answers to CentOS interview include: 1. Use the yum or dnf command to install software packages, such as sudoyumininstallnginx. 2. Manage users and groups through useradd and groupadd commands, such as sudouseradd-m-s/bin/bashnewuser. 3. Use firewalld to configure the firewall, such as sudofirewall-cmd--permanent-add-service=http. 4. Set automatic updates to use yum-cron, such as sudoyumininstallyum-cron and configure apply_updates=yes.

The methods for basic Linux learning from scratch include: 1. Understand the file system and command line interface, 2. Master basic commands such as ls, cd, mkdir, 3. Learn file operations, such as creating and editing files, 4. Explore advanced usage such as pipelines and grep commands, 5. Master debugging skills and performance optimization, 6. Continuously improve skills through practice and exploration.

Linux beginners should master basic operations such as file management, user management and network configuration. 1) File management: Use mkdir, touch, ls, rm, mv, and CP commands. 2) User management: Use useradd, passwd, userdel, and usermod commands. 3) Network configuration: Use ifconfig, echo, and ufw commands. These operations are the basis of Linux system management, and mastering them can effectively manage the system.

The steps to start a Redis server include: Install Redis according to the operating system. Start the Redis service via redis-server (Linux/macOS) or redis-server.exe (Windows). Use the redis-cli ping (Linux/macOS) or redis-cli.exe ping (Windows) command to check the service status. Use a Redis client, such as redis-cli, Python, or Node.js, to access the server.

Navicat for MongoDB cannot view the database password because the password is encrypted and only holds connection information. Retrieving passwords requires MongoDB itself, and the specific operation depends on the deployment method. Security first, develop good password habits, and never try to obtain passwords from third-party tools to avoid security risks.

Summary: Navicat cannot view SQLite passwords because: SQLite does not have traditional password fields. SQLite's security relies on file system permission control. If the file password is forgotten, it cannot be retrieved (unless the database is encrypted, the key is required).
