The more you act, the more you know; the deeper your knowledge, the further you can go. To stimulate students’ interest and enthusiasm for studying information technology, the School of Information Technology has specially launched the “IT Knowledge Base” column. Continuous effort, like water dripping through stone, conveys the pulse of information, cultivates social talents, … Read more
Linux System Directory Structure Linux can actually change the rules, but most still follow this structure.http://www.pathname.com/fhs/ $> man hier //description of the file system hierarchy#> tree -d -L 2 / /: This is the root directory. This is where the whole tree starts. /bin: This directory contains executable programs which are needed in single user … Read more
🌟 Linux Configuration Files: The Textual Dance of the System’s Soul 💡 Introduction: In the world of Linux, configuration files are the “soul” of the system and applications. Whether it’s starting services, setting up networks, managing users, or customizing the desktop environment, almost all configurations can be accomplished by editing files. So, what exactly are … Read more
Learning Linux Shell commands is a gradual process. Beginners can start with basic commands and gradually master scripting and system management. During the learning process, it is recommended to practice hands-on and refer to online documentation and community resources. At the same time, as technology continues to evolve, Linux is also constantly updating. Maintaining a … Read more
Ansible Modules and Collections Ansible Modules Ansible executes tasks through modules, such as <span>ansible.builtin.hostname</span> for setting the hostname. <span>ansible.builtin</span> is the namespace for modules. Different modules belong to different namespaces. Generally, module names do not conflict, but as the number of modules increases, the possibility of name conflicts cannot be ruled out. Therefore, different modules … Read more
The Ansible `cron` module is used to manage scheduled tasks (cron jobs) on remote hosts, allowing you to create, modify, and delete scheduled tasks to ensure specified tasks are executed automatically at designated times. 1. Features of Ansible’s `cron` Module Manage crontab and environment variable entries: You can create environment variables and named crontab entries, … Read more
Requirements As a professional in the IoT industry, having worked on numerous IoT projects, the requirements for an IoT platform are very clear: 1.The supported protocols need to be numerous enough, with common protocols like MQTT and Modbus needing to be supported and easily extensible. 2.The system management must be comprehensive: user management, permission management, … Read more
The following is a complete reference manual for 100 high-frequency Linux commands, categorized with command names, function descriptions, common parameters, and typical use cases: 1. File and Directory Operations (15 commands) Command Function Description Parameter Examples Typical Use Case <span><span>ls</span></span> List directory contents <span><span>-l for detailed information </span></span><code><span><span>-a</span></span>Show hidden files <span><span>ls -la /etc</span></span> <span><span>cd</span></span> Change … Read more
Common commands for the nano editor, where ^ represents Ctrl and M represents Alt. When shutting down Linux, use the who command to check online status, netstat -a to check network connections, and ps -aux to view background processes. Before shutting down, use the sync command to write data to disk. Use the shutdown command … Read more
Click the above “Mechanical and Electronic Engineering Technology” to follow us 1. System Management Update the package list: sudo apt update Upgrade installed packages: sudo apt upgrade Install new packages: sudo apt install <package_name> Remove packages: sudo apt remove <package_name> Clean up unnecessary packages and cache: sudo apt autoremove Find packages: apt search <keywords> View … Read more