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：
-
- Shell basic command learning
- 1: Write the shell script vitest.sh#!/bin/bash#Specify what interpreter this script needs to execute echo "HelloWorld!" #The echo command is used to output text to the window 2: Execute the shell script cd into the directory where the file exists chmod +x./test.sh#Enable the script to have execution permissions./test.sh#Execute script 3: Shell variable understanding example: your_name="wangzhi.cn" Note: There cannot be a space between the variable name and the equal sign: (1). The first letter must be the letter (a-z, A-Z) (2). There can be no space in the middle
- LINUX 607 2024-07-15 15:35:24
-
- MinGW-w64 C/C++ compiler version introduction and download link
- 1. Direct link to download MinGW-w64C/C++ compiler resources from the official website: 2. Product introduction There are a total of five versions that can run on Windows. Let’s talk about the differences of each version separately. 1-cygwin: Equivalent to the Linux compatibility layer of Windows. Linux installs gcc, which can run most Linux software environments (not within the scope of discussion) 2-llvm: Another famous compiler clang under Unix systems and Linux systems (some The feature is not supported under Windows, but it is not gcc red flag linux download and is not recommended) 3-w6464devkit: development tool suite including gcc (recommended, other
- LINUX 1129 2024-07-15 15:19:18
-
- Does the database automatically increment the primary key?
- 1. Should every table have an auto-incrementing primary key? It does not necessarily mean that auto-incrementing the primary key can speed up the insertion of rows. It has advantages in table space utilization and the fragmentation is not obvious. But for some content, such as queries based on uid that are very frequent and relatively concentrated, if you do not use auto-incrementing the primary key, but use uid+id as the composite primary key, the query efficiency will go up, but insertion and fragmentation will increase. . But if the storage type of the database is SSD, then this problem does not exist. Therefore, in most cases, it is correct for the table to have an auto-incrementing primary key. 2. Is the auto-incrementing primary key business unique? Not necessarily under a single table structure, yes. In the case of multiple tables, not necessarily, certain strategies are required, such as setting different suffixes, the same interval, etc. 3The auto-incrementing primary key is
- LINUX 798 2024-07-12 18:33:57
-
- Hospital information management system based on Java: Exploration to improve management efficiency and service quality
- Abstract Tomorrow in the 21st century, with the continuous development and progress of society, people's scientific understanding of information has developed from low level to high level, from the original perceptual understanding to rational understanding, and the importance of management work has gradually been People know that scientific management enables accurate, rapid and complete information storage, improves work management efficiency and promotes its development. The paper mainly introduces the clinic information management system, including the current status of the research and the development background involved. Then it also elaborates on the design goals of the system, as well as the system requirements, the entire design plan, and the impact on the system. The design and implementation were also explained in detail. Finally, some specific tests were conducted on the clinic information management system.
- LINUX 836 2024-07-12 11:16:49
-
- Linux file permissions analysis
- Commonly used permissions There are three identities for files in the Linux system u: owner g: group o: other people. These identities commonly have the following permissions for documents: r: read permission. Users can read the contents of the document, such as using cat, more View w: Write permission, the user can edit the document : Set so that the file has the permissions of the file owner during the execution phase, which is equivalent to temporarily possessing the identity of the file owner. A typical file is passwd. If a general user executes the file, the file can obtain root permissions during the execution process. This allows the user's password to be changed.
- LINUX 807 2024-07-12 10:50:41
-
- Comprehensive analysis of Linux IP configuration: three network connection modes of virtual machines and precautions
- Purpose of the preface article: brief, clear, and comprehensive introduction to Linux IP configuration. Notes: The article is long. If you are interested in a certain link, you can click on the table of contents to get straight to the topic. 1. Three network connection modes of virtual machines (common sense) VMnet1 and VMnet8 are two network cards that are virtualized after installing the virtual machine VMware. VMnet1 is a host network card, used to connect to the network in host mode; VMnet8 is a NAT network card, used to connect to the network in NAT mode, but their IP addresses are randomly generated. 1.Bridged bridge mode is like an independent "physical machine" that exists alone in the LAN. It can access any machine in the same LAN.
- LINUX 696 2024-07-11 22:07:55
-
- 6 ways to communicate between Linux processes
- The concept of process is the concept of the operating system. Whenever we execute a program, a process is created for the operating system. In this process, resources are allocated and released. A process can be thought of as an execution of a program. The concept of process communication. Process user spaces are independent of each other and generally cannot access each other. But in many cases, processes need to communicate with each other to complete a certain function of the system. Processes coordinate their behavior by communicating with the kernel and other processes. Application scenarios of process communication Data transmission: One process needs to send its data to another process, and the amount of data sent ranges from one byte to several megabytes. Shared data: Multiple processes want to operate shared data, and one process wants to operate the shared data.
- LINUX 443 2024-07-11 21:58:37
-
- Detailed explanation of Linux file system directory structure: root file system and the meaning of common folders
- Note from LinuxWiki: This article has not been updated for more than 11 years (4219 days). If you find that the content is outdated or incorrect, please feel free to improve it:) Windows treats the hard disk as several independent partitions: "C drive" and "D drive" Differently, Linux regards the entire file system as a tree, and the bark of this tree is called the root file system Linux port mapping, represented by /. Each partition is accessed as a folder through "Mount". There are many folders in /. This article introduces the meaning of common folders. The directory structure of Linux is indeed relatively complex, but the settings are reasonable and the levels are clear. This article takes FHS2.3 as an example to introduce. Tip: If you like diagrams, you can refer to LinuxToy reprinted
- LINUX 806 2024-07-11 20:32:44
-
- How to upload files to image server in Tomcat container on Linux
- A recent project requirement is to upload files to a picture server. The picture server is a tomcat container deployed on Linux. The Linux system uploads files. Not much to say about Linux e-books. Just code a tool class. Done: packagecom.supermap.sbsm.util;importcom.jcraft.jsch.Channel;importcom.jcraft.jsch.ChannelSftp;importcom.jcraft.jsch.JSch;importcom.jcraft.jsch.Session;
- LINUX 1088 2024-07-11 18:35:53
-
- logrotate command: a powerful tool for managing log files in Linux systems
- The logrotate command is a command tool used to manage log files in the Linux system. This command can manage the log files under the specified path. The default is the log file in the /var/log directory. It can realize manual rotation, compression and deletion of the corresponding logs. file to prevent the log file from being too large and causing the server C drive to become full. The default configuration files used by the logrotate command are files in the /etc/logrotate.conf and /etc/logrotate.d/ directories. Sentence format: logrotate parameter configuration file; parameters can be empty. Parameter description -d parameter: debugging function, simulates the command execution process, but will not actually execute the command; Figure 1
- LINUX 368 2024-07-11 18:31:44
-
- Tiny Core Linux: The most streamlined Linux distribution, 11MB graphics-free desktop, can be added by yourself
- This headline account insists on updating original dry technical articles every night. Check the distribution version of Linux. Welcome to follow this headline account "Linux Learning Tutorial", and the official account name is "Linux Getting Started Learning Tutorial". If you want to study the video, please copy the following information to your mobile browser or laptop browser: zcwyou.com1. Preface
- LINUX 726 2024-07-11 18:27:37
-
- How to mount a local Windows folder on a Linux system? Detailed tutorial
- Generally during the development process, because in most cases the Windows system is used to develop the linuxmnt directory, and some program projects need to be compiled and run on Linux. Because the systems are different, it is relatively troublesome to switch back and forth between systems. Hongqi Linux Official Website shares a trick to mount a local windows folder to a Linux system, which makes debugging and development very convenient. There is no need to install any nfs_server tools, just one command to mount the shared directory under Windows. Implementation method: sudomount-tcifs-ousername=Administrator,password=666666,uid=10
- LINUX 932 2024-07-11 13:43:58
-
- MySQL basic installation: sharing from environment preparation to architecture, transactions, indexes and other aspects
- Preface Compared with other small databases such as Oracle, SQL Server, etc., MySQL has its own shortcomings, but this has not reduced its popularity at all. For ordinary individual users and medium and large enterprises, the functions provided by MySQL are more than sufficient. However, because MySQL is an open source software, it can greatly reduce the total cost of ownership, so it is widely used in all walks of life. It is popular and widely used, so it is usually a must-ask knowledge point in written examinations, so in the next period of time, follow the editor to learn the relevant knowledge of MySQL! The editor will cover the installation, architecture, transactions, indexing, linux mobile phones, locks, sub-databases and sub-tables of mysql.
- LINUX 833 2024-07-11 13:40:05
-
- Explore benchmarking tools under Linux: a powerful tool for evaluating hardware and software performance
- Benchmarking is the act of running a computer program to evaluate the performance of hardware and software. Basic hardware testing includes evaluating the performance of different components such as processors, video memory, motherboards, hard drives, and networks. There are two categories of benchmarks: composite and applied. Composite benchmarks perform stress tests on a piece of hardware, such as continuously writing and reading data. Application benchmarks judge the performance of real-world applications such as databases and servers. Benchmark testing software allows system testers and users to objectively and independently evaluate hardware performance. There are many excellent open source Linux benchmark testing tools under Linux, such as PhoronixTestSuite, IOzone, netperf, etc. PhoronixTestSuite is a well-known website in the industry. It often
- LINUX 1249 2024-07-10 18:42:57
-
- Commands and methods to view IP address in Linux system
- Please pay attention to this headline and insist on updating original dry technical articles every day. If you need to learn videos, please search the public account "Zhichuanwangyou" on WeChat to start self-service video learning directly 1. Preface
- LINUX 555 2024-07-10 10:48:18
Recommended Articles
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
