11. vim vim is the built-in text editor of the Linux system, which can be understood as the Word software in the Windows system. :w filename saves the document with the specified filename. :wq saves and exits. :q! exits without saving and forces exit from command line mode. Function keys: 1) Insert mode: Press "i" … Read more
In embedded development, when faced with limited resources, have we ever reflected on why we are still using those bulky toolsets? In the world of embedded development, every byte counts. When most developers are forced to compromise between functionality and resources, the emergence of BusyBox breaks this deadlock. What is BusyBox? BusyBox, known as the … Read more
Last week, our automation pipeline suddenly failed, and the error message was simply: Connection refused The developer said: “The service is down, go check the server.” I logged into the test machine and resolved it with three commands: ps -ef | grep order-service # Check processesnetstat -tunlp | grep 8080 # Check porttail -f /var/log/order.log … Read more
1. cd cd: Change directory Change the working directory. The commands cd and ls are probably the two most used commands, especially for users unfamiliar with the Linux directory structure. cd / # Enter the root directory cd – # Return to the last directory cd # Return to the home directory cd ~ # … Read more
Click the blue text to follow us 1. Introduction The chown (change owner) command is used to modify the owner and group of a file. Linux/Unix is a multi-user, multitasking operating system, and all files have an owner. The chown command changes the owner of a specified file to a specified user or group. The … Read more
1. Network Management Commands 1. <span>ping</span>: Network Connectivity Test # Test basic connectivity (send 4 packets) ping -c 4 api.example.com # Continuous testing (test 10 times per second) ping -i 0.1 -c 10 api.example.com Application Scenario: Use <span>ping</span> to confirm network connectivity. If ping fails, it indicates a network issue; if it pings successfully but … Read more
This article provides a detailed introduction to the usage of the grep command, including common options, regular expression applications, and more. Let’s learn together and improve together! Continue reading!First, what is grep?grep is a command in the Linux system used to search for text within files, useful for various text processing and log analysis. I … Read more
In the world of Linux, the philosophy that “everything is a file” means that we deal with thousands of files every day. Faced with a vast ocean of files, how can we quickly and accurately locate the target files? This article systematically organizes various techniques for file searching in Linux, from basic commands to efficient … 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
5 Hidden Linux Commands to Double Your Daily Task Efficiency If you’ve spent some time in the Linux terminal, you may have fallen in love with commands like <span>ls</span>, <span>grep</span>, or <span>cat</span>. They are essential tools for daily life in Linux. However, Linux has many powerful commands that most people have never heard of. Some … Read more
