current location：Home > Technical Articles > System Tutorial > LINUX
- Direction：
- All web3.0 Backend Development Web Front-end Database Operation and Maintenance Development Tools PHP Framework Daily Programming WeChat Applet Common Problem Other Tech CMS Tutorial Java System Tutorial Computer Tutorials Hardware Tutorial Mobile Tutorial Software Tutorial Mobile Game Tutorial
- Classify：
-
- The key to operational stability issues – availability
- Review is more based on subsequent summary and improvement. So how do we find and measure stability problems? Then we need to bring out today’s protagonist—availability. What is availability? Availability is an important indicator for evaluating business stability. It can discover periodic problems in the business through data quantification and establishing baselines, and thus improve service quality in a more targeted manner. So, what is availability? Availability refers to the proportion of the total available time for a functional individual within a specified time interval. In other words, it refers to the probability or proportion of the system being able to operate normally within a specified period of time. For our current Internet business, most of it is "real-time" and "online", that is, Real
- LINUX 1240 2024-03-27 18:11:20
-
- Use FTP server user liwu to try to log in. 8. Troubleshooting ideas
- Contents 1. FTP service 1. Introduction to FTP contract FTP is a file transfer contract. It is a TCP-based contract and adopts the client/server model. Through the FTP contract, users can upload or download files on the FTP server. Use ports 20 and 21 of TCP: Port 20: used to build data connections and transfer file data. Port 21: used to build control connections. Disadvantages: Data cannot be automatically synchronized and needs to be automatically synchronized. 2. FTP service principle FTP service is divided into two types: linux adds ftp service linux operating system version, active connection and passive connection. Active connection principle: Passive connection principle: 3. Configuration file path service configuration file: /etc/vsftpd/
- LINUX 903 2024-03-27 10:36:36
-
- sudoapt-getinstallcscope usage: -Rb
- /**********************************************************************Author:Samson*Date:07/02/2015*Testplatform:*gcc(Ubuntu4.8.2-19ubuntu1)4.8.2*GNUbash,4.3.11(1)-release(x86_64-pc-linux-gnu)*Nginxversion:*Nginx1.6.2*Nginx1.8.0*********************
- LINUX 486 2024-03-26 12:20:36
-
- Linux kernel file decryption: exploring the design secrets of the operating system
- As the cornerstone of open source operating systems, the Linux kernel has always attracted a lot of attention. This is mainly due to its strong and stable characteristics. This article will explore the uniqueness of Linux kernel files and their key role in system operation from many aspects, and reveal the mystery of the internal operating pipeline of the operating system to readers. 1. Overview of the kernel file The kernel file is mainly compiled in C language and contains the key codes and data structures of the operating system. These files assume key responsibilities such as hardware resource control, process scheduling, and memory management at the kernel level. A deeper understanding of this set of files can help you more fully grasp the design concept of the entire operating system. 2. Classification of kernel files Core files can be classified into device driver modules and system call interfaces according to their uses.
- LINUX 710 2024-03-26 12:06:25
-
- Comparison of Linux distribution software: Scapy vs Hping3 vs Nemesis
- As an expert in the field of network security, I know the importance of outsourcing software in network environment simulation and traffic testing. This article aims to conduct an in-depth evaluation and comparison of commonly used Linux package distribution software, so that users can choose the best package distribution tool according to their own needs. 1. Scapy: A flexible and versatile network programming tool, Scapy is a Python library with excellent functions and high flexibility, providing comprehensive API services for the construction and analysis of various network protocols. It has the ability to send and receive customized network data packets, and can also perform multiple operations such as traffic analysis and spoofing attacks. Diverse protocol compatibility and convenient programming mode make it the first choice tool for experts and researchers in the field of network security. 2.Hping3: powerful network
- LINUX 618 2024-03-26 10:46:04
-
- How to learn the impact of Linux and cloud services on Linux operation and maintenance
- I want to talk to you about the Linux operation and maintenance industry. I will talk about the current situation of the industry from several aspects, how to learn Linux well and how to become a professional operation and maintenance personnel, and the impact of cloud services on Linux operation and maintenance. 1. The status of the Linux industry. We all know that Linux has become popular around the world since 1991 and has spread to China. With the prosperity and development of Smart China and the Internet, many applications are basically running in Linux servers. The Linux operating system is still used by most people. do not know much. 1. The threshold for entry is too high. Linux is a UNIX-like operating system. From the beginning of its development, it was not targeted at the general public, but professionals specializing in the computer industry. Linux is mainly operated through the command line, and this is not me
- LINUX 347 2024-03-26 08:30:48
-
- Detailed explanation of commands-GCC
- Syntax gcc (options) (parameters) Options -o: Specify the generated output file; -E: Only perform compilation preprocessing; -S: Convert C code to assembly code; -wall: Display warning messages; -c: Execute only Compilation operation, no linking operation. Parameter C source file: Specify the C language source code file. Example Common compilation command options Assume that the source program file is named test.c. Compile and link without options. gcctest.c will preprocess, assemble, compile and link test.c to form an executable file. No output file is specified here, the default output is a.out. The option -ogcctest.c-otest will preprocess, assemble, compile and link test.c to form the executable file test. -o option is used to
- LINUX 1206 2024-03-25 21:27:09
-
- (Basic knowledge of Linux) Linux system, U disk, ISO image file
- Required tools: Linux system, USB flash drive, ISO image file. First, open the terminal in the Linux system and use the dd command. The format is as follows: sudoddif=xxx.isoof=/dev/sdb. In the command, xxx.iso is the path of your ISO image file, and of= is the path of your U disk next to it. Usually It is /dev/sdb or /dev/sdc (do not put the number 1 or 2 in front). How to confirm the U disk path: Enter in the terminal: sudofdisk-l Complete example: sudoddif=/home/mtoou/Download/xubunut.isoof=/dev/sdb Meaning: Write the location /home/ to the sdbc disk
- LINUX 946 2024-03-25 09:20:41
-
- Database management expert reveals: Thrilling experience and successful solution of running Oracle 10g
- As a senior expert who is familiar with the field of database management, he has focused on such matters for many years. Recently, I encountered a series of troubles when running Oracle10g on the Linux platform, and finally successfully resolved the difficulties. Today I am sharing this experience with everyone, hoping to provide reference for friends in the same situation. 1. Preparation work It is recommended that before starting the installation, you must master the knowledge of low-level Linux operations, linuxoracle10g installation diagram, and good hardware and software environment setting skills. At the same time, you also need to download a valid Oracle10g software package to ensure that it is complete and intact. 2. Installation steps The following are detailed installation steps: First, please enter the folder where the Oracle10g software package is stored and expand this
- LINUX 745 2024-03-25 09:20:38
-
- Android hot fix Tinker source code analysis
- A very big highlight of tinker is that it has self-developed a set of dexdiff and patch related algorithms. The main purpose of this article is to analyze this algorithm. Of course, it is worth noting that the prerequisite for analysis is that you need to have a certain understanding of the format of the dex file, otherwise you may be confused. Therefore, this article will first do a simple analysis of the dex file format, and also do some simple experiments, and finally enter the dexdiff and patch algorithm parts. 1. Brief analysis of Dex file format. First, let’s briefly understand the Dex file. When decompiling, everyone knows that the apk will contain one or more *.dex files. This file stores the code we wrote. Generally, we It will also be converted through tools
- LINUX 942 2024-03-25 09:20:24
-
- Detailed explanation of command-test
- The test command is a practical tool for testing conditional expressions in the shell environment. Syntax test (option) option -b: true if the file is a block special file; -c: true if the file is a character special file; -d: true if the file is a directory; - e: true if the file exists; -f: true if the file is an ordinary file; -g: true if the SGID bit of the file is set; -G: true if the file exists and is owned by the group , then it is true; -k:
- LINUX 524 2024-03-25 08:10:30
-
- The usage of environment variables in Linux is divided by the same life cycle
- Preface: 1. Environment variables are variables set by the operating system environment and are applicable to the user process of the entire system; 2. Environment variables can be set in commands, and the setting values will be lost when the user logs off; 3. To If it is repeatedly applicable, it is best to define it in .profile; the use of environment variables is the same as the use of local variables. 4. And before use, it must be imported with the export command. 1. Introduction to environment variable files. Environment variables in Linux include system level and user level. System-level environment variables are system variables that every user who logs in to the system must read, while user-level environment variables are the system variables that the user uses. Environment variables are loaded at the time, so the files that manage environment variables are also divided into system level and user level. 2. L
- LINUX 701 2024-03-25 08:00:49
-
- Bonus: Windows package management system Chocolatey
- Chocolatey introduces in detail Chocolatey is the next command line package management software for Windows. Simply put, it is apt-get of Windows. If you are accustomed to Linux operating methods and really want to use it to control Windows, please give it a try. Chocolatey, a package management system, currently contains nearly 500 commonly used software. The installation is very simple. Open the command line interface, paste the following line and press Enter: @powershell-NoProfile-ExecutionPolicyunrestricted-Command"iex((new-objectnet.webclient).Downlo
- LINUX 680 2024-03-24 09:20:08
-
- Linux Kernel: Revealing the Hidden BOSS of Computer Operating Systems
- Discusses the view that the Linux kernel plays an important role in computer operating systems. Linux kernel design and implementation. Through in-depth analysis of Linux kernel design and practical applications, it reveals its prominent position and influence in this field. 1. Optimized memory management By using virtual memory management technology, the Linux kernel can efficiently complete memory allocation and recycling. With the help of the replacement page algorithm, the Linux kernel is designed and implemented to accurately handle the mapping relationship between physical memory and virtual memory. Flexible adjustments can be made based on the specific needs of the application, thereby improving overall system performance. 2. The powerful process management kernel uses its excellent multi-tasking technology to enable multiple processes to coexist harmoniously in a single system. Carefully formulated
- LINUX 459 2024-03-24 09:10:13
-
- red hat linux installation Red Hat Linux installation guide: no mistakes, one step to get it right
- 1. Ensure system compatibility. Before starting to install the RedHatLinux operating system, be sure to ensure that your computer has the corresponding software and hardware compatibility. Please refer to the RedHat official website or related communities to inquire about the system requirements and hardware support required for this cross-platform solution. At the same time, verify the specific configuration parameters of your computer, such as processor speed, memory capacity, remaining hard disk space, etc., to ensure that the process of installing and running RedHatLinux is smooth and error-free. 2. Download the appropriate ISO image file. Obtain the required version of the ISO image file from the RedHat official website. How to check the system version in linux? Be sure to ensure network stability during the download process. Please select the corresponding system rack according to your actual needs.
- LINUX 448 2024-03-24 08:16:50
Tool Recommendations
jQuery enterprise message form contact code
jQuery enterprise message form contact code is a simple and practical enterprise message form and contact us introduction page code.
form button
2024-02-29
HTML5 MP3 music box playback effects
HTML5 MP3 music box playback special effect is an mp3 music player based on HTML5 css3 to create cute music box emoticons and click the switch button.
Player special effects
2024-02-29
HTML5 cool particle animation navigation menu special effects
HTML5 cool particle animation navigation menu special effect is a special effect that changes color when the navigation menu is hovered by the mouse.
Menu navigation
2024-02-29
jQuery visual form drag and drop editing code
jQuery visual form drag and drop editing code is a visual form based on jQuery and bootstrap framework.
form button
2024-02-29
Organic fruit and vegetable supplier web template Bootstrap5
An organic fruit and vegetable supplier web template-Bootstrap5
Bootstrap template
2023-02-03
Bootstrap3 multifunctional data information background management responsive web page template-Novus
Bootstrap3 multifunctional data information background management responsive web page template-Novus
backend template
2023-02-02
Real estate resource service platform web page template Bootstrap5
Real estate resource service platform web page template Bootstrap5
Bootstrap template
2023-02-02
Simple resume information web template Bootstrap4
Simple resume information web template Bootstrap4
Bootstrap template
2023-02-02
Cute summer elements vector material (EPS PNG)
This is a cute summer element vector material, including the sun, sun hat, coconut tree, bikini, airplane, watermelon, ice cream, ice cream, cold drink, swimming ring, flip-flops, pineapple, conch, shell, starfish, crab, Lemons, sunscreen, sunglasses, etc., the materials are provided in EPS and PNG formats, including JPG previews.
PNG material
2024-05-09
Four red 2023 graduation badges vector material (AI EPS PNG)
This is a red 2023 graduation badge vector material, four in total, available in AI, EPS and PNG formats, including JPG preview.
PNG material
2024-02-29
Singing bird and cart filled with flowers design spring banner vector material (AI EPS)
This is a spring banner vector material designed with singing birds and a cart full of flowers. It is available in AI and EPS formats, including JPG preview.
banner picture
2024-02-29
Golden graduation cap vector material (EPS PNG)
This is a golden graduation cap vector material, available in EPS and PNG formats, including JPG preview.
PNG material
2024-02-27
Home Decor Cleaning and Repair Service Company Website Template
Home Decoration Cleaning and Maintenance Service Company Website Template is a website template download suitable for promotional websites that provide home decoration, cleaning, maintenance and other service organizations. Tip: This template calls the Google font library, and the page may open slowly.
Front-end template
2024-05-09
Fresh color personal resume guide page template
Fresh color matching personal job application resume guide page template is a personal job search resume work display guide page web template download suitable for fresh color matching style. Tip: This template calls the Google font library, and the page may open slowly.
Front-end template
2024-02-29
Designer Creative Job Resume Web Template
Designer Creative Job Resume Web Template is a downloadable web template for personal job resume display suitable for various designer positions. Tip: This template calls the Google font library, and the page may open slowly.
Front-end template
2024-02-28
Modern engineering construction company website template
The modern engineering and construction company website template is a downloadable website template suitable for promotion of the engineering and construction service industry. Tip: This template calls the Google font library, and the page may open slowly.
Front-end template
2024-02-28
