Found a total of 10000 related content
Password policy strengthening and regular script replacement implementation
Article Introduction：This article describes how to use Python scripts to strengthen password policies and change passwords regularly. The steps are as follows: 1. Use Python's random and string modules to generate random passwords that meet the complexity requirements; 2. Use the subprocess module to call system commands (such as Linux's passwd command) to change the password to avoid hard-code the password directly; 3. Use crontab or task scheduler to execute scripts regularly. This script needs to handle errors carefully and add logs, and update regularly to deal with security vulnerabilities. Multi-level security protection can ensure system security.
2025-04-08
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664
How Does the -m Option Affect Python Code Execution?
Article Introduction：This article examines the differences in Python code execution when using the -m option. The -m option allows modules to be run as scripts, assigning a package name to the package variable. Without -m, Python treats the file as a regular script witho
2024-10-22
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665
How to Use the REGEX Functions in Excel
Article Introduction：Quick review of Excel regular expression functions: REGEXTEST, REGEXEXTRACT and REGEXREPLACE
Regular expressions (REGEX) are search patterns used to check if a text string complies with a given pattern and to extract or replace a text string matching the given pattern. Given its complexity, this article provides a simplified summary and example of its use in Excel.
The REGEX function is suitable for users using Microsoft 365 Excel for Windows or Mac, as well as those using web versions of Excel.
REGEXTEST: Text pattern matching test
This function tests whether the text string is in the same way as
2025-02-06
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464
BitForex exchange provides a convenient currency withdrawal process
Article Introduction：BitForex exchange provides users with a convenient experience through its simplified currency withdrawal process, which includes the following steps: Log in to your account. Go to the withdrawal page. Select a coin and enter an address. Enter quantity and network. Security verification. Submit a coin withdrawal request. BitForex processes withdrawal requests quickly and uses strict security measures to protect user assets, including Google Authenticator or mobile phone verification codes, cold storage and regular security audits.
2024-12-07
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918
Debian Node.js log backup and recovery strategy
Article Introduction：In order to ensure the log security of Node.js applications in Debian systems, this article provides a complete set of log backup and recovery strategies to ensure rapid recovery in case of system failure or data loss. 1. Log backup 1.1 Regular backup: Using rsyncrsync is a powerful file synchronization tool that can realize regular backup of log files: #Create backup directory mkdir-p/backup/logs#Use rsync to backup logs rsync-av--delete/var/log/nodejs/backup/logs/1.2 timing task: crontab creates a backup script, and
2025-04-12
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530
How to get query string values in JavaScript?
Article Introduction：Getting query parameters in URLs can be implemented in front-end development through various methods. First, it is recommended to use URLSearchParams, which provides methods such as .get() and .has() to parse parameters; secondly, it can be manually parsed to be compatible with old environments, and key-value pairs are extracted and decoded by regular extraction and decoding; finally, it can also be simplified by third-party libraries such as qs or URL.js, but it is not recommended to introduce dependencies in simple scenarios. In short, URLSearchParams is preferred, and other methods are only used when necessary.
2025-07-15
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734
How to update all my software at once
Article Introduction：All software cannot be updated at once, but the process can be simplified by combining tools and regular maintenance. First, use the "Settings" → "Windows Update" function that comes with Windows system to enable automatic updates to ensure that the operating system, drivers and some pre-installed software are kept up to date; second, use third-party batch update tools such as NiniteUpdater, SUMo or Chocolatey to centrally manage common software updates; at the same time, combine browser plug-in reminders such as Chrome's extended update prompts, and develop the habit of setting a "update day" checklist and viewing change logs every month, so as to efficiently complete software maintenance.
2025-07-17
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228
When to Denormalize Your SQL Database: A Practical Guide
Article Introduction：DenormalizingaSQLdatabase should consider the following four situations: 1. When query performance becomes a bottleneck and JOIN operation consumes a lot, query can be simplified through pre-computing; 2. When the application requires a simpler data model to avoid complex JOIN or retain historical state, product information is directly stored in order; 3. When using read-write separation or cache layer, it can be combined with regular synchronized non-standardized tables to reduce application complexity; 4. When the demand for horizontal scaling increases, to avoid cross-slicing JOINs, an embedded structure can be used in distributed systems. However, it should always be carried out on a standardized basis and the necessity should be confirmed before implementation.
2025-07-18
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285
Troubleshooting MySQL Data Loss Scenarios
Article Introduction：Data loss problems can be solved by preventing and responding quickly. 1. If the data is deleted accidentally, you can restore it by binlog, test the backup process, and set up a recycling bin; 2. If the hardware failure is RAID, master-slave copying, and monitor the disk; 3. If the MySQL crashes, you should check the error log, start the repair mode, and use backup to restore it; 4. If the backup fails, you should improve script alarms, regular drills, and remote storage backup.
2025-07-30
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561
Understanding the Bun JavaScript Runtime
Article Introduction：Bun is a modern JavaScript/TypeScript runtime designed to provide faster performance and built-in toolset than Node.js. 1. It uses the JavaScriptCore engine, which starts faster and has lower memory footprint; 2. It has built-in packager, test framework and dependency manager, without additional installation tools; 3. It is compatible with some Node.js API, suitable for fast script development, small services and simplified building toolchain; 4. It is simple to install and use, and supports running JS/TS/JSX files and dependency installation; 5. It is currently suitable for projects that do not rely on complex Node.js native modules, and is not yet suitable for large production environments.
2025-07-16
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491
Implementing MySQL Data Quality Checks and Validation
Article Introduction：Data quality inspection can be achieved through constraints, scripts, triggers and foreign keys. 1. Define key field integrity constraints, such as NOTNULL, UNIQUE, and CHECK to ensure the required, uniqueness and value range; 2. Establish a regular verification script to detect null values, illegal formats and logical errors, and execute them through timed tasks; 3. Use triggers to automatically intercept abnormal data before insertion or update, to improve real-time verification capabilities; 4. Use foreign key constraints to ensure the consistency of multi-table associated data to prevent "orphan data".
2025-07-25
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389
How does PHP handle file system operations, and what are the security considerations?
Article Introduction：PHP handles file system operations through built-in functions, but needs to pay attention to security risks. Common functions include fopen(), file_get_contents(), unlink(), etc., which are used to read, write, delete and check files; user input must be verified during operation to prevent path traversal attacks; script access to directories should be restricted through open_basedir; reasonable permissions should be set to avoid sensitive files being read and written; verification of types and renaming when uploading files; performance is recommended to use buffer reading and regular cleaning of temporary files. Following best practices can improve safety and efficiency.
2025-06-19
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667
Version Control for SQL Database Schemas
Article Introduction：Database version control is implemented through migration scripts to ensure that structural changes are traceable and rollable. 1. Why is it necessary: database structure changes are difficult to roll back, which can easily lead to inconsistency in the environment. Version control can record the change history and support restoration; 2. How to implement: Use migration scripts executed in sequence, record them in the schema_migrations table, combined with tools such as ActiveRecordMigrations or golang-migrate; 3. Notes: The script should be idempotent and include rollback logic, distinguish structure and data changes, and use scripts to synchronize the test environment uniformly; 4. Other suggestions: Regular backup of DDL, CI/CD, automatically perform migration, and check structural consistency before going online.
2025-07-25
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398
MySQL dual master hot standby solution based on Keepalived
Article Introduction：The MySQL dual master hot standby solution based on Keepalived ensures that the database service is not interrupted. 1. Keepalived monitors the database instance, and switches the VIP to the backup library when the main library fails; 2. MySQL replication function (such as GTID) ensures the synchronization and consistency of the data of the two main libraries; 3. Keepalived relies on the heartbeat package to detect the status of the main node through the VRRP protocol, and switches the VIP according to the configuration parameters (priority, detection interval, etc.). Carefully configures to avoid the phenomenon of split brain; 4. A script is required to monitor the MySQL status and troubleshoot problems in combination with logs; 5. High availability requires selecting appropriate hardware, regular backups, reasonable monitoring, and continuous maintenance and optimization.
2025-04-08
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1162
Using the MySQL Shell for administration and scripting
Article Introduction：The method of MySQLShell to connect to the database is to use the mysqlsh command to start and enter connection information, or directly specify user@host:port on the command line; 1. The startup method is flexible, supports interactive input or directly specifying parameters; 2. Pay attention to SSL settings and authentication methods, especially when remote connections, to ensure the correct permissions and passwords; 3. After entering the shell, it is SQL mode by default, and can perform regular SQL operations; 4. Support switching to JS or Python mode to write complex scripts to realize automated tasks; 5. Script writing requires attention to mode selection, output format, exception handling and file saving; 6. Provide practical tips, such as viewing the current mode, switching paths, multi-instance connections, and checking help articles
2025-07-13
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671
Dave The Diver: How To Catch Spider Crabs
Article Introduction：In Dave The Diver, there are some creatures that are not easy to catch. Or, catch alive that is. The spider crab is one of those very species, making it seem like the only way to bring these crustaceans back up to land is to viciously crack them up w
2025-01-10
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856
