Some commonly used Linux commands. View the number of files in a directory ls -l | wc -l View the number of files in a directory and its subdirectories find . -type f | wc -l View the number of lines in a file wc -l file.txt Find file content and display a few lines … Read more
In the operation and maintenance of Linux systems, mastering efficient command operations is a fundamental requirement for every network security professional. A simple combination of commands can often automate cumbersome processes, significantly improving work efficiency. Today, I will share 20 frequently used Linux commands based on my daily work. These commands cover various aspects such … Read more
Today, we will discuss the essential Linux commands that every server engineer must master, along with the fundamental principles behind them. 1. System Monitoring and Diagnostic Commands: Your “Stethoscope” 1. top/htop – The “Real-time Monitor” of System Status # Basic Usage top # Real-time display of system processes htop # A more user-friendly alternative to … Read more
Click the blue text to follow us 1. Introduction The pwd (print working directory) command is used to display the full path of the current user’s working directory. Executing the pwd command allows you to know the absolute path name of your current working directory, facilitating subsequent work. 2. Syntax Syntax: pwd [OPTION] Parameter Description: … Read more
Today, we will analyze logs using Linux commands in a practical work scenario. This includes many useful tips that can significantly aid in performance testing, analyzing online logs, understanding user behavior, and troubleshooting issues. 1. Can we do this? When we want to analyze an online file, the first question to consider is whether we … Read more
(Add this to your favorites to enhance your Linux skills) Author: Shouwang (This article is contributed by the author, see the end for a brief introduction) Introduction Among the commonly used Linux commands, some commands can be used to check the system’s status. Understanding the current state of the system can help us better maintain … Read more
Why doesn’t everyone understand this?~1. What is setterm https://man.he.net/man1/setterm setterm – Set terminal attributes setterm writes a character string to standard output that invokes the specified terminal function. It consults terminfo to find the string to use whenever possible. However, some options (marked as “only for virtual consoles”) do not correspond to functions in terminfo(5). … Read more
🚀 Essential Linux Command Collection for Big Data Development: A Must-Read Guide for Programmers! In big data development, Linux is our “fighter jet”.Core components like Hadoop, Hive, Kafka, Flink, and Spark all run in a Linux environment.If you are not familiar with Linux commands, troubleshooting issues, optimizing performance, or even simple data file operations can … Read more
The Linux operating system is widely used in servers, embedded systems, and personal computers due to its stability, security, and flexibility. Mastering common Linux commands is fundamental to efficiently using the Linux system. This article systematically introduces common Linux commands, covering file management, system monitoring, user management, and more. 1. File and Directory Management File … Read more
The cp (copy) command is used to copy files. The cp command can copy both text files and binary files, and it can also recursively copy directories. ✦•———-Basic Usage———-•✦ Copying Files Copy the source file src.txt to the new file dest.txt $ cp src.txt dest.txt If the cp command produces no output, it indicates that … Read more