In the process of Linux system operation and maintenance, performance optimization is a crucial task. Disk I/O performance is often one of the key factors affecting the overall performance of the system. To accurately grasp the status of disk I/O, it is necessary to use some practical tools, and the iostat command is one of … Read more
Linux | Red Hat Certified | IT Technology | Operations Engineer 👇 Join our technical exchange QQ group with a note【Public Account】for faster approval Before explaining the permission issues, I would like to briefly introduce the essence of commands and the role of the command line interpreter. Introduction 01 The Essence of Commands Entering a … Read more
1. Basics 2. Help Commands 3. File and Directory Management (Part 1) 4. File and Directory Management (Part 2) 5. Permission Management 6. Vim Text Editor 7. File System and File Search 8. System Management 9. Disk Partitioning, Logical Volumes, and Boot Repair 10. Understanding BASH in Shell 11. Basic Shell Commands 12. Text Operations
Awk is a scripting language used for processing data and generating reports. The awk command programming language does not require compilation and allows users to use variables, numeric functions, string functions, and logical operators. Awk is a utility that enables programmers to write small but effective programs in the form of statements that define the … Read more
Interviewer Question: How can threads be reclaimed in Linux? What are the common methods? Candidate Reference Answer: In POSIX thread (<span><span>pthread</span></span>) programming, after a thread finishes, some information (such as return value and exit status) is retained for other threads to use. If these resources are not reclaimed, it may lead tothread resource leakage. Common … Read more
1. Difference Between Commands and Command Lines 1. Command Line: The Linux terminal (Terminal), a command prompt page, operates the system in pure “character” form, allowing various character-based commands to issue operational instructions to the system. 2. Command: A Linux program, where a command is essentially a program. Commands do not have a graphical interface … Read more
Introduction: In the article “Tuning Linux System Level and Common Interview Questions,” the author provides a detailed introduction to common tuning methods for Linux systems and frequently asked interview questions. This article will introduce commonly used Linux commands for performance monitoring. 1. uptime $ uptime 23:51:26 up 21:31, 1 user, load average: …
Introduction:When I first started working, a leader from another department often forgot the root password for his Linux testing environment and would ask me for help to bypass it. I could easily enter single user mode, reset the password, and reboot in about a minute. After leaving that company, I hardly used single user mode … Read more
☞ The course by Liang Xu has completely exploded! ☜ Service management in Linux that every sysadmin must know! Introduction In <span>Linux</span>, whenever you install any package with services and daemons, the system will by default add the initialization and <span>systemd</span> scripts for these services, but they are not enabled at this point. We need … Read more
Dear friends following HPMicro, the <span>Zephyr v3.7.0 (LTS)</span> version and <span>hpm_sdk v1.6.0</span> version of <span>Zephyr SDK Glue v0.5.0</span> has been officially released. The repository link is: https://github.com/hpmicro/zephyr_sdk_glue Zephyr Development Package for HPMicro MCU Zephyr is a general-purpose embedded real-time operating system with good scalability.Zephyr SDK Glue (abbreviated as ZSG) is an open-source software package developed … Read more