(Click the public account above to quickly follow) Source: ggjucheng Link: http://www.cnblogs.com/ggjucheng/archive/2013/01/13/2858470.html Introduction Awk is a powerful text analysis tool. Compared to grep for searching and sed for editing, awk is particularly powerful in data analysis and report generation. In simple terms, awk reads files line by line, slicing each line using space as the … Read more
(Click the blue text above to quickly follow us) This article is recommended by the original author (Lü Kai) Below are examples of user and group information. The password information in /etc/shadow is stored encrypted and will not be exemplified. $cat /etc/passwd |head –n5 root:x:0:0:root:/root:/bin/bash daemon:x:1:1:daemon:/usr/sbin:/bin/sh bin:x:2:2:bin:/bin:/bin/sh sys:x:3:3:sys:/dev:/bin/sh sync:x:4:65534:sync:/bin:/bin/sync $cat /etc/group |head –n5 root:x:0: daemon:x:1: … Read more
Author: DAVE Translator: Nuclear Cola Editor: Liu Yan Commercial Unix sales are plummeting—this trend must be influenced by certain underlying factors. All the scenarios that once popularized Unix have now become the domain of Linux, which has also reached new heights that Unix could never achieve. Has Linux developed into a perfect and reliable alternative, … Read more
Source: WeChat Official Account 51CTO Technology StackWritten by | Yan Zheng, Wang Ruiping A market share of 3% may seem insignificant, but for desktop Linux systems like Ubuntu and Fedora, it has sparked excitement among enthusiasts. According to the latest data from traffic monitoring agency StatCounter, as of June 2023, the desktop market share of … Read more
(Click the public account above to quickly follow) Source: ggjucheng Link: http://www.cnblogs.com/ggjucheng/archive/2013/01/13/2858470.html Introduction awk is a powerful text analysis tool. Compared to grep for searching and sed for editing, awk is particularly powerful in data analysis and report generation. In simple terms, awk reads files line by line, slicing each line using space as the … Read more
Script HomeSet as “Starred⭐” to receive article updates promptlySource: Haodao Linux (ID: hao_tiyu)Today, I bring you 45 efficient Linux command combinations. By utilizing these commands effectively, you will find that they can solve 99% of daily operational tasks.The following related efficient commands are listed without any particular order, focusing more on providing a better user … Read more
Compiled by: Code Guardian A significant security gap in Linux runtime security caused by ‘io_uring’ can allow rootkits to operate undetected on systems while bypassing advanced enterprise security software. This vulnerability was discovered by security researchers at ARMO, who also developed a proof-of-concept rootkit named ‘Curing’ to demonstrate the practicality and feasibility of evading detection … Read more
1. Overview of Shared Memory Technology Shared Memory is one of the fastest inter-process communication (IPC) methods in Linux systems, allowing multiple processes to access the same physical memory area, thus avoiding the performance overhead of data copying between processes. Compared to other IPC mechanisms such as pipes and message queues, shared memory has the … Read more
Through action, knowledge deepens; through deep knowledge, action becomes more effective. To stimulate students’ interest and enthusiasm for studying information technology, and to help everyone understand more practical computer knowledge, 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, … Read more
Linux Server System Information # Display basic system information uname -a # View kernel version uname -r # Display information about the distribution – detailed information about the operating system lsb_release -a # Linux version cat /etc/issue cat /etc/os-release more /etc/redhat-release hostnamectl cat /proc/version # CPU information cat /proc/cpuinfo more /proc/cpuinfo | grep "model name" … Read more