The package module of ansible.builtin is used to manage software packages on Linux-based systems. It is a generic module that supports multiple package managers (such as apt, yum, dnf, zypper, etc.) and can install, update, and remove packages. Its functionality is similar to the ansible.builtin.dnf built-in module, but it supports more package management tools, making … Read more
Follow and star our public account for exciting content Source: Embedded Linux The questions are as follows: I am currently 25 years old, graduated from a non-211 university. I work in Shenzhen, doing embedded development, and my salary is currently average. After reading many blogs written by seniors, I find them great. I have some … Read more
Two days ago, the Linux Foundation finally responded directly to the export controls of the US entity list, providing everyone with a sense of relief. This news has been eagerly awaited by those in the tech community for a year… A year ago, the US Department of Commerce placed some Chinese tech giants on the … Read more
IntroductionAs a developer, have you ever encountered a situation where you configured your application to automatically restart after a crash, but the service just won’t come back up? The logs only show a cold <span>status=217/USER</span>, leaving you puzzled? Don’t panic! Today, we will provide a hands-on guide to help you solve the “mystical” issue of … Read more
Abstract: It is a command-line utility used to list information about files opened by various processes. In Linux, everything is a file (pipes, sockets, directories, devices, etc.). Therefore, by using lsof, you can obtain information about any open file. lsof stands for ‘list open files’. If you think of the lsof command as ‘ls + … Read more
In today’s rapidly accelerating digital transformation, the Linux operating system, as the mainstream OS for servers and edge computing devices, directly impacts the protection of enterprise data assets and user privacy. This guide will present a practical security hardening solution from the core dimensions of security reinforcement, combined with code examples, focusing on two key … Read more
Click the blue “Most Programmer” to follow me! Add a “star“, every day at 18:03 to learn technology together Redirection Standard input stdin: code is 0, use < or <<Standard output stdout: code is 1, use > or >>Standard error output stderr: code is 2, use 2> or 2>>Special syntax: write both stdout and stderr … Read more
Open-source tools like Linux Malware Detect and Chkrootkit can alert you to unwanted visitors on your server. Translated from “Linux Security: Scan Your Servers for Rootkits With Ease” by Jack Wallen. Linux is one of the most secure operating systems on the planet. However, nothing is absolutely secure, and if a server is connected to … Read more
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