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- Detailed explanation of linux kernel space and user space
- Linux drivers typically run in kernel space, but can also run in user space. Below we will analyze the concepts of kernel space and user space in detail and how to judge them. Linux simplifies the segmentation mechanism so that the virtual address and the linear address are always consistent. Therefore, the virtual address space of Linux is also 0~4G. The Linux kernel divides this 4G byte space into two parts. The highest 1G bytes (from virtual address 0xC0000000 to 0xFFFFFFFF) are used by the kernel and are called "kernel space". The lower 3G bytes (from virtual address 0x00000000 to 0xBFFFFFFF) are used by each process and are called "user space". Because each process
- LINUX 1062 2024-02-13 21:36:15
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- Subvert your understanding of operating systems - an overview of Linux distributions
- Whether you are a senior programmer or a beginner, whether you are a Windows or macOS user, if you have a certain understanding of computer operating systems, the name Linux will definitely be familiar to you. However, you may only scratch the surface of the Linux operating system. In fact, there are many Linux distributions, each with unique features and application scenarios. Below, we will introduce you to several common Linux distributions and help you subvert the traditional understanding of operating systems. In order to enable multiple devices to communicate with each other through the network, and to solve the compatibility issues of various devices in network interconnection, the International Standardization Organization has developed the Open System Interconnection Communication Reference Model (openSys
- LINUX 564 2024-02-13 21:15:02
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- Install flight simulator FlightGear on Linux 2020.3.12
- FlightGear is an open source, multi-platform flight simulator that provides the full range of flight simulation experiences required by trainee pilots or aviation enthusiasts. This open source flight simulator offers an experience that no other simulator can offer. FlightGear crosses the ownership barriers of existing simulators and provides independence of use and scalability. Launched in 1997, the FlightGear project was developed by an ambitious global team of volunteers and has successfully created an incredibly realistic flight simulator that can be used, modified and distributed for free. FlightGear is used by a large number of flight simulation enthusiasts around the world, and is also widely used in university research and interactive exhibitions in museums. Fli
- LINUX 860 2024-02-13 20:57:22
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- CentOS installs PHPStudy and CentOS installs network card driver
- When using the CentOS operating system, sometimes we need to install some additional software or drivers to meet our needs. This article will introduce how to install PHPStudy and network card drivers on CentOS. Installing PHPStudy on CentOS Installing PHPStudy on CentOS can help us quickly build a PHP development environment. The following are the installation steps: 1. We need to download the PHPStudy installation package. You can download the latest installation package on the official website. 2. After the download is complete, use the following command to decompress the installation package: ```tar-zxvfPHPStudy.tar.gz 3. After decompression is complete, enter the decompressed directory: cdPHPStud
- LINUX 1212 2024-02-13 20:57:08
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- Detailed explanation of CentOS installation fuse and CentOS installation server
- As a LINUX user, we often need to install various software and servers on CentOS. This article will introduce in detail how to install fuse and set up a server on CentOS to help you complete the related operations smoothly. CentOS installation fuseFuse is a user space file system framework that allows unprivileged users to access and operate the file system through a customized file system. Installing fuse on CentOS is very simple, just follow the following steps: 1. Open the terminal and Log in as root user. 2. Use the following command to install the fuse package: ```yuminstallfuse3. Confirm the prompts during the installation process and enter `y` to continue. 4. Installation completed
- LINUX 1043 2024-02-13 20:40:18
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- Xiaosi LINUX shares: Installing a virtual machine under Tongxin UOS and a guide to installing a virtual machine under Tongxin system
- Hello everyone, I am. Today I will share with you how to install and use a virtual machine under the Unongxin UOS operating system, and how to install a virtual machine on the Unongxin system. With the continuous development of cloud computing and virtualization technology, virtualization Virtual machines have become an indispensable part of our daily work. Whether it is to test software, learn a new operating system, or improve hardware utilization, virtual machines have provided us with great convenience. I will introduce it in detail in I hope this will help you with the steps to install and use a virtual machine under Tongxin UOS. Installing a virtual machine under UOS UOS 1. Open the UOS operating system and click "App Store" in the left menu bar. 2. Search for "virtual machine" in the app store, and then select the appropriate virtual machine software for installation.
- LINUX 1546 2024-02-13 20:39:09
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- How to quickly exchange files on a LAN under Linux
- Woof (short for WebOfferOneFile) is a simple application for sharing files between hosts on a small local network. It consists of a mini HTTP server that serves a specified file a specified number of times (defaults to once) and then terminates. To use woof, just call it on a single file and the recipient can access your shared file through a web browser or using a command line web client such as cURL from the terminal, HTTPie, wget or kurly (cURL alternative) . One advantage of woof compared to other file sharing tools is that it works on different operating systems or different devices if the recipient has a web browser installed (
- LINUX 1051 2024-02-13 20:36:02
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- Detailed explanation of CentOS installation of qBittorrent and CentOS installation of PHP environment
- Installing and configuring qBittorrent and PHP environments on CentOS systems is a very common task. qBittorrent is a powerful open source BitTorrent client, while PHP is a popular server-side scripting language. This article will detail how to install qBittorrent on CentOS systems. Install and configure both software and provide some small knowledge about CentOS and Linux. We need to install qBittorrent on CentOS system, follow these steps: 1. Open the terminal and log in as root user. 2. Use the following command to add the EPEL software repository: sudoyuminstallepel-relea
- LINUX 984 2024-02-13 20:30:37
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- Artifact in Linux: Principles and Applications of eventfd
- Linux is a powerful operating system that provides many efficient inter-process communication mechanisms, such as pipes, signals, message queues, shared memory, etc. But is there a simpler, more flexible, and more efficient way to communicate? The answer is yes, that is eventfd. eventfd is a system call introduced in Linux version 2.6. It can be used to implement event notification, that is, to deliver events through a file descriptor. eventfd contains a 64-bit unsigned integer counter maintained by the kernel. The process can read/change the counter value by reading/writing this file descriptor to achieve inter-process communication. What are the advantages of eventfd? It has the following features
- LINUX 702 2024-02-13 20:30:16
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- Compile and install the latest Linux Kernel 6.0 rc3 on CentOS7
- What boy wouldn't want to compile his own kernel by hand? Install the compilation environment CentOS7 and install the necessary packages yumgroupinstall "DevelopmentTools"-y&&yuminstallopenssl-devel-y&&yuminstallrpm-buildredhat-rpm-configasciidochmaccalcperl-ExtUtils-Embedpesignxmlto-y&&yuminstallaudit-libs-develbinutils-devellfutils-devellfutils
- LINUX 973 2024-02-13 20:20:35
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- Thoroughly understand Linux hard links and soft links
- Hard links and soft links are two common link file types under Linux systems. If you want to learn more about the concept of hard links and soft links, I will take you through the research. By reading this article, you will fully understand the differences and characteristics of hard links and soft links. First of all, under the Linux system, there are two types of link files, one is a hard link (HardLink) and the other is a soft link, also called a symbolic link (SymbolicLink). Hard links can be created using the ln command under Linux systems: ln [parameters] [source file or directory] [destination file or directory] In the file system, each file will have an index node (InodeIndex). This index node used to mark
- LINUX 809 2024-02-13 20:20:02
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- Blackbox: A beautiful terminal for minimalist Linux users
- There are many terminal emulators available for Linux?itsfoss.com. From Terminator to Tilix, you have a variety of terminals to choose from. But that hasn't stopped new terminal apps from arriving. You've seen GNOMEConsole?itsfoss.com recently, and today, I'm going to introduce you to Blackbox. Blackbox Terminal: Overview and Features Blackbox is a terminal emulator that supports GTK4. The developer created this project so that he could use a beautiful terminal application on Linux. So, don't expect it to have a lot of features. It's just a terminal emulation that uses the GTK4 toolkit and supports themes
- LINUX 697 2024-02-13 20:06:17
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- Linux command line trick: detailed explanation of Cut command to process text easily!
- In the Linux command line, it is often necessary to intercept and split text content. The Cut command is one of the very practical tools. It can extract data from lines, characters, and fields of text and output the results to the standard output device. In today's tutorial, we will introduce the use of the Cut command in detail through some examples. Basic syntax of Cut command options: cutOPTION...[FILE]...Options: -f: Extract by specifying which field. The cut command uses "TAB" as the default field separator. -d: "TAB" is the default delimiter, use this option to change to other delimiters. –complement: This option is used to exclude the specified
- LINUX 1040 2024-02-13 20:00:20
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- Installation of MVN on CentOS and installation of local jar packages
- During the development of Java projects, we often use Maven to manage project dependencies and build processes. This article will introduce how to install Maven on the CentOS operating system and explain how to install local jar packages. Installation of MVN on CentOS 1. Make sure your CentOS system has JavaDevelopmentKit (JDK) installed. You can check whether Java is installed by running the following command: java-version2. Use the following command to install Maven: sudoyuminstallmaven3. After the installation is complete, you can Verify that Maven is installed correctly using the following command: mvn-versionMV
- LINUX 1238 2024-02-13 20:00:09
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- In-depth Linux installation tutorial: from entry to proficiency
- Deepin Linux is an operating system based on the open source Linux kernel. It has the advantages of stability, security, and ease of use. It is widely used in servers, desktops and other fields. This article will introduce you to the installation tutorial of Deepin Linux, including preparations before installation. , precautions during the installation process, and configuration and optimization after the installation is completed, etc. Preparations before installation Before installing Deepin Linux, you need to make the following preparations: 1. Download the ISO image file of Deepin Linux, which can be downloaded from the official website or the community. 2. Prepare a USB flash drive or CD to write the ISO image file to the storage device. 3. Make sure that the computer's BIOS or UEFI settings have turned on UEFI boot mode so that it can be booted from a USB flash drive or CD.
- LINUX 1215 2024-02-13 19:54:08
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