Under Linux system, we often need to change the Mysql database password. Mysql database is a very popular database management system and is widely used. Let's take a look at how to change the password of the Mysql database under the Linux system.
Step 1: Log in to Mysql
First, we need to log in to Mysql using the root account. Enter the following command in the terminal:
mysql -u root -p
After pressing the Enter key, the system will prompt you to enter the password of the root account. After entering the correct password, you can log in to the Mysql database.
Step 2: Change password
Once you have successfully logged in to the Mysql database, you can use the following command to change the Mysql password:
USE mysql; UPDATE user SET authentication_string=PASSWORD('New_password_here') WHERE User='root';
This command will change the root account's password The password is changed to New_password_here. After the modification is completed, you need to update your user permissions and exit Mysql.
FLUSH PRIVILEGES; QUIT;
Step 3: Verify the new password
Now, you can use the new password to log in to the Mysql database. Enter the following command in the terminal:
mysql -u root -p
When the password prompt appears, enter the new password. If you enter the correct password, you will be able to log in to the Mysql database. Congratulations, you have successfully changed the password of the Mysql database.
Notes
When changing the Mysql password under the Linux system, please pay attention to the following:
- These commands only apply to the root account.
- If your Mysql database has enabled SSL-consuming database connections, then you need to add the "-ssl" option to the command line.
- If your Mysql database has enabled the secure file privileges option, then you need to add the "--secure-file-priv" option to the command line.
- Please note that there may be multiple users with root access.
- The new Mysql version uses the "authentication_string" field instead of the previous "password" field.
Summary
Now, you already know how to change the password of Mysql database under Linux system. This is very important because Mysql database is a popular database management system, and in During the operation, we need to change the password frequently to improve security. We hope you find these steps helpful so you can better manage your data.
The above is the detailed content of How to change mysql password in linux. For more information, please follow other related articles on the PHP Chinese website!

ACID attributes include atomicity, consistency, isolation and durability, and are the cornerstone of database design. 1. Atomicity ensures that the transaction is either completely successful or completely failed. 2. Consistency ensures that the database remains consistent before and after a transaction. 3. Isolation ensures that transactions do not interfere with each other. 4. Persistence ensures that data is permanently saved after transaction submission.

MySQL is not only a database management system (DBMS) but also closely related to programming languages. 1) As a DBMS, MySQL is used to store, organize and retrieve data, and optimizing indexes can improve query performance. 2) Combining SQL with programming languages, embedded in Python, using ORM tools such as SQLAlchemy can simplify operations. 3) Performance optimization includes indexing, querying, caching, library and table division and transaction management.

MySQL uses SQL commands to manage data. 1. Basic commands include SELECT, INSERT, UPDATE and DELETE. 2. Advanced usage involves JOIN, subquery and aggregate functions. 3. Common errors include syntax, logic and performance issues. 4. Optimization tips include using indexes, avoiding SELECT* and using LIMIT.

MySQL is an efficient relational database management system suitable for storing and managing data. Its advantages include high-performance queries, flexible transaction processing and rich data types. In practical applications, MySQL is often used in e-commerce platforms, social networks and content management systems, but attention should be paid to performance optimization, data security and scalability.

The relationship between SQL and MySQL is the relationship between standard languages and specific implementations. 1.SQL is a standard language used to manage and operate relational databases, allowing data addition, deletion, modification and query. 2.MySQL is a specific database management system that uses SQL as its operating language and provides efficient data storage and management.

InnoDB uses redologs and undologs to ensure data consistency and reliability. 1.redologs record data page modification to ensure crash recovery and transaction persistence. 2.undologs records the original data value and supports transaction rollback and MVCC.

Key metrics for EXPLAIN commands include type, key, rows, and Extra. 1) The type reflects the access type of the query. The higher the value, the higher the efficiency, such as const is better than ALL. 2) The key displays the index used, and NULL indicates no index. 3) rows estimates the number of scanned rows, affecting query performance. 4) Extra provides additional information, such as Usingfilesort prompts that it needs to be optimized.

Usingtemporary indicates that the need to create temporary tables in MySQL queries, which are commonly found in ORDERBY using DISTINCT, GROUPBY, or non-indexed columns. You can avoid the occurrence of indexes and rewrite queries and improve query performance. Specifically, when Usingtemporary appears in EXPLAIN output, it means that MySQL needs to create temporary tables to handle queries. This usually occurs when: 1) deduplication or grouping when using DISTINCT or GROUPBY; 2) sort when ORDERBY contains non-index columns; 3) use complex subquery or join operations. Optimization methods include: 1) ORDERBY and GROUPB


Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

ZendStudio 13.5.1 Mac
Powerful PHP integrated development environment

PhpStorm Mac version
The latest (2018.2.1) professional PHP integrated development tool

Dreamweaver CS6
Visual web development tools

VSCode Windows 64-bit Download
A free and powerful IDE editor launched by Microsoft

Dreamweaver Mac version
Visual web development tools