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HomeOperation and MaintenanceLinux Operation and MaintenanceRecommended 10 commonly used ways to view user usage, welcome to download!

1. View the currently logged in user information who command: The default output of who includes user name, terminal type, login date and remote host. who /var/log/wtmp You can view every login since the wtmp file was created (1) -b: View the latest startup time of the system (2) -H: Print the title of each column users command: Print the currently logged in users, each displayed user name corresponds to a login session. 2. Check the command history. Each user has a command history. Check $HOME/.bash_history or enter: history3. last command in the terminal to check the user login history. This command will read the /var/log/wtmp file; /var/log/btmp can display remote login information. &n

1. Linux User Management (3) Detailed explanation on how to view user login time and command history

Recommended 10 commonly used ways to view user usage, welcome to download!

Introduction: 1. View the currently logged in user information who command: The default output of who includes user name, terminal type, login date and remote host. who /var/log/wtmp You can view every login since the wtmp file was created (1) -b: View the latest startup time of the system (2) -H: Print the title of each column users command: Print the currently logged in user , each displayed username corresponds to a login session. 2. View the command history. Each user has

2. How to use the php explode() function

Recommended 10 commonly used ways to view user usage, welcome to download!

Introduction: To split a string in php, we can use the function explode() to achieve it. Usually in development projects, we want to see what users submit through forms or other methods. Each part of the string for easy classification storage and use. For example, looking at words in a sentence, or splitting a URL or email address into its component parts. At this time we can use the explode() function. This article will introduce how to use the php explode() function

3. [php] 7. Student management System-Administrator View User

Recommended 10 commonly used ways to view user usage, welcome to download!

## Introduction:: This article mainly introduces [php] 7. Student Management System - Administrators view users. Students who are interested in PHP tutorials can refer to it.

4. PHP5 calls the win system com component to view user information

Introduction: PHP5 calls the win system com component to view User information php5

5. [php] 3. Student Management System-View User

Recommended 10 commonly used ways to view user usage, welcome to download!

##Introduction: [php] 3. Student Management System-View Users6.

Delete MySQL anonymous user

Recommended 10 commonly used ways to view user usage, welcome to download!

Introduction: After installing MySQL-5.1.62 today, I logged in to check the users and found four mysqlgt; select user,host from user;+------+ --------------+| user

7.

Oracle query table belongs to which user

Recommended 10 commonly used ways to view user usage, welcome to download!

Introduction: select username,default_tablespace from dba_users order by username You need to have dba permissions 1. View the default tablespace name used by the user.

8.

Modification of expired Oracle user login password

Recommended 10 commonly used ways to view user usage, welcome to download!

#Introduction: Modification of expired Oracle user login password 1. Check which user's proifle is, usually default: sqlgt;SELECT username,PROFILE FROM dba_use

9. Oracle 11g forced password change ORA-28001 processing method

Recommended 10 commonly used ways to view user usage, welcome to download!

Introduction: I received an alarm that the monitoring user could not connect to the database. Oracle prompted the error message ORA-28001: the password has expired. When I went up to check the user status, it turned out to be exp

10. Oracle basic knowledge: View users, user permissions, user table spaces, user default table spaces

Recommended 10 commonly used ways to view user usage, welcome to download!

Introduction: 1. View the corresponding relationship between users and default tablespace www.linuxidc.com@ORCLgt; select username,default_tablespace from dba_users; 2. View table results

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The 5 Core Components of the Linux Operating SystemThe 5 Core Components of the Linux Operating SystemMay 08, 2025 am 12:08 AM

The five core components of the Linux operating system are: 1. Kernel, 2. System libraries, 3. System tools, 4. System services, 5. File system. These components work together to ensure the stable and efficient operation of the system, and together form a powerful and flexible operating system.

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Linux user management and security can be achieved through the following steps: 1. Create users and groups, using commands such as sudouseradd-m-gdevelopers-s/bin/bashjohn. 2. Bulkly create users and set password policies, using the for loop and chpasswd commands. 3. Check and fix common errors, home directory and shell settings. 4. Implement best practices such as strong cryptographic policies, regular audits and the principle of minimum authority. 5. Optimize performance, use sudo and adjust PAM module configuration. Through these methods, users can be effectively managed and system security can be improved.

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Linux Operations: Shell Scripting and AutomationLinux Operations: Shell Scripting and AutomationMay 04, 2025 am 12:15 AM

Shell scripts are powerful tools for automated execution of commands in Linux systems. 1) The shell script executes commands line by line through the interpreter to process variable substitution and conditional judgment. 2) The basic usage includes backup operations, such as using the tar command to back up the directory. 3) Advanced usage involves the use of functions and case statements to manage services. 4) Debugging skills include using set-x to enable debugging mode and set-e to exit when the command fails. 5) Performance optimization is recommended to avoid subshells, use arrays and optimization loops.

Linux Operations: Understanding the Core FunctionalityLinux Operations: Understanding the Core FunctionalityMay 03, 2025 am 12:09 AM

Linux is a Unix-based multi-user, multi-tasking operating system that emphasizes simplicity, modularity and openness. Its core functions include: file system: organized in a tree structure, supports multiple file systems such as ext4, XFS, Btrfs, and use df-T to view file system types. Process management: View the process through the ps command, manage the process using PID, involving priority settings and signal processing. Network configuration: Flexible setting of IP addresses and managing network services, and use sudoipaddradd to configure IP. These features are applied in real-life operations through basic commands and advanced script automation, improving efficiency and reducing errors.

Linux: Entering and Exiting Maintenance ModeLinux: Entering and Exiting Maintenance ModeMay 02, 2025 am 12:01 AM

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