As a Linux operations engineer, mastering command delimiters is a key skill to enhance work efficiency. This article will detail commonly used command delimiters in the CentOS7 system and their usage techniques, helping you operate the command line with ease. 01 Basic Delimiters Semicolon (;) and Logical AND (&&) 1. Semicolon (;) – Execute sequentially … Read more
In Linux systems, there are various commands and methods to view the status of remote login users. Here are some commonly used commands and techniques: 1. Using the who command The who command is used to display information about users currently logged into the system, including usernames, login times, and login terminals. It can also … Read more
In the digital age, operations and maintenance engineers often have a few “invisible employees” on their computersâthese tools never complain about overtime, are on standby 24 hours a day, and complete every task on time. This is the superpower that Linux scheduled tasks provide to the system. When you notice that the server automatically backs … Read more
The scripts required for this article can be directly copied in the format of this article: train_script.sh #!/bin/bash train=( " ____ " " _|____|____ " " | _________ | " " | _ _ | " " |_| |_| |_| " ) cols=$(tput cols) train_width=0 for line in "${train[@]}"; do (( ${#line} > train_width )) … Read more
Warm Reminder Reading on WeChat public account may result in poor code formatting, incorrect formatting after copying code, outdated content, and advertisement issues. It is strongly recommended to click the Read the Original link at the bottom left of the article for viewing. Tips Changing Network Interface Names to eth0 and eth1 in Linux Systems … Read more
In the past couple of years, I often tell my students that when they encounter difficult problems, they should first consult the silicon-based AI assistant, and if that doesn’t solve the issue, then come to me, the carbon-based teacher. Recently, I developed an AI teaching assistant for learning Linux. After a period of testing, the … Read more
In the Linux world, there are many ways to obtain hardware information, such as <span>lscpu</span>, <span>free</span>, <span>lsblk</span>, and so on, but these commands usually focus on specific aspects. The uniqueness of <span>inxi</span> lies in its ability to integrate these scattered pieces of information. Today, we will explore this amazing tool. Installing inxi inxi can be … Read more
Introduction I previously shared the control layer for I2C and mentioned that I would update the SPI section shortly. However, I was too tired and didn’t get around to it, so I apologize for the delay, haha. The SPI protocol is much simpler than I2C, but I find the software handling to be more complex … Read more
ver0.2 Introduction In the previous article, we introduced the basic architecture and routing mechanism of LPI-type interrupts. I believe everyone is now somewhat familiar with LPI-type interrupts, at least understanding the difference between bus-based (Message) and hardwired (Signal) interrupt types. We also discussed the basic architecture and working principles of GIC physical interrupt virtualization. However, … Read more
Linux | Red Hat Certified | IT Technology | Operations Engineer đ Join the technical exchange QQ group with 1000 members, note ăpublic accountă for faster approval 1. The Origin and Development of Linux 1. Initial Motivation: Linux is a powerful open-source operating system developed and released by Linus Torvalds, a student at the University … Read more