1. Introduction: Why is NFS the “Preferred Solution” for Cross-Machine Sharing in Linux? In daily work, have you encountered these issues: transferring large files with SCP takes a long time, frequent logins with FTP are troublesome, and multiple Linux servers need to share configuration files but struggle to synchronize? In fact, these problems can be … Read more
This article is based on notes taken during a freshman Linux class, aimed at helping students review after class. The content is derived from the book “Linux Network Operating System Configuration and Management” edited by Teacher Xia Liqin. I hope everyone can learn together and make progress. 1. Usage of Directory Operation Commands 1. View … Read more
1. Root User (Super Administrator) Whether it is Windows, macOS, or Linux operating systems, a multi-user permission management system is employed. In the Linux system, the account with the highest privileges is called root (super administrator). The root user has the highest level of system operation permissions, while ordinary users’ permissions are usually subject to … Read more
Introduction In Linux systems, not all operations can be performed by regular users. Some critical operations (such as installing software, modifying system configurations, and managing services) require superuser (root) privileges. However, operating directly as root is highly risky; a single mistake can lead to system failure. Therefore, Linux provides a safer solution—sudo. With the <span>sudo</span> … Read more
In Linux, viewing and analyzing logs is a core operation for daily maintenance or testing. Below are common and advanced commands for viewing logs and their usage scenarios. 1. Common commands for viewing historical logs 1) Regularly search for log information containing specific keywords in designated log files. 1) Ignore case sensitivity, allowing for matches … Read more
Click on "Programmer Interview", select "Star🔝" As operations and maintenance personnel, these commonly used commands are essential. Mastering these commands will significantly improve work efficiency. 1. File and Directory The cd command is used to switch the current directory. Its parameter is the path to the directory to switch to, which can be an absolute … Read more
14 Ansible One-Liners to Automate Daily DevOps Tasks Handle quick fixes, checks, and cleanup operations without writing a full playbook. If you frequently use Ansible, you know how it can quickly save hours of tedious work, but not every small task requires a full playbook. Sometimes, a single Ansible command can handle a task faster … Read more
Linux User and Group Management: From Creation to Permission Control1. Basics of the Linux User System2. Core User Management Commands3. User Group Management Commands4. Password Management5. User Information Query Commands6. Configuration File Details7. Password Policies and Security8. Practical Cases9. Best Security Practices10. Troubleshooting11. Summary Linux User and Group Management: From Creation to Permission Control In … Read more
Linux System Notes Basic Commands Find IP address: ifconfig View all files in the current directory (including hidden files): ls -a or ll Check memory usage: df -h Check memory usage of each file in the current directory: du -sh ./* Check if a specific process is running, for example, Nginx, ps -ef|grep nginx Kill … Read more
🐧 Linux System User and Group Management This chapter mainly explains the methods of Linux user and group management, including account addition, modification, deletion, password management, group management, and related system file structures. This knowledge is fundamental for system maintenance, security control, and permission management. 🧭 1. Management of Linux System User Accounts Linux is … Read more