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- How many methods do you know about Linux memory usage analysis?
- 0. Introduction: System memory is an indispensable part of the hardware system. Regularly checking the operation of system memory resources can help us promptly discover whether there are abnormal occupations of memory resources and ensure stable business operation. For example: Regularly checking the memory usage of the company's website server can ensure whether the server resources are sufficient, or if the server memory is found to be abnormally occupied, it can be solved in time to avoid the problem of being unable to access the website or slow access due to insufficient memory. Therefore, it is very important for Linux administrators to be able to skillfully check the memory health status under Linux systems in daily work! It is not difficult to check the memory operating status, but how to check it in the correct way for different situations? Yiyijun has compiled a few very practical ones
- LINUX 717 2024-02-13 18:24:16
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- Android users are excited! No need for root, mobile phone can also play Linux system
- Congratulations, Android users can experience Linux directly without root permissions! This new technology that shocked the industry will lead us into a new era of mobile terminals. This means that you can now enjoy more powerful functions and more space for free exploration on your mobile phone. 1. Technical background In the past, when using Linux system on Android devices, it was often necessary to root the phone first. However, this is not only complicated and cumbersome, but also carries certain risks, which will affect the warranty period and security of the mobile phone. Some readers may be put off by this. Now with the linux compression command, this dilemma has been solved. 2. Principle analysis With the help of virtual machine technology, the device can easily run as a Linux operating system without rooting the device. This type of software can build isolated virtual machines for the Android platform.
- LINUX 1201 2024-02-13 18:18:22
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- Remember to step on the 'pit' of MySQL in subquery
- Preface MySQL is a commonly used database in projects, and in queries are also very commonly used. During the recent debugging of the project, I encountered an unexpected select query, which actually took 33 seconds! 1. Table structure 1. userinfo table 2. article table select*fromuserinfowhereidin(selectauthor_idfromartilcewheretype=1); When you first see the above SQL, you may think that this is a very simple subquery. First find out the author_id, and then use in to query it. If there is a related index, it will be very fast. In terms of disassembly, it is as follows: 1.select
- LINUX 797 2024-02-13 18:12:27
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- Check whether the Linux system is running on a virtual machine or a physical machine
- In addition to local development, most of our daily use of Linux is to connect to remote servers through ssh, such as system deployment, operation and maintenance, etc. In the current environment where virtualization is very mature, most of the systems we deploy run in virtual machines. But some of them are on physical machines. So, how to distinguish whether our system is running on a virtual machine or a physical machine? Let’s discuss this issue in detail below. There are several commands that can be used to distinguish whether the system running environment is a virtual machine or a physical machine. 1. Use the dmidecode command to distinguish between a virtual machine and a physical machine. The easiest way is to use the dmidecode command. As shown below: sudodmidecode-ssystem-ma
- LINUX 1081 2024-02-13 18:12:03
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- 6 examples of using dd command to back up Linux, keeping your data safe and worry-free!
- Are you troubled by the inability to recover lost data because you had no backup in the past? Or are you struggling to find a reliable way to protect your important data? The good news is that in Linux, there is a command that can help you back up your entire system or a single partition, and you can easily restore it after the backup. This magical command is dd. Today we will show you 6 examples of using the dd command to back up Linux so that your data will never be lost! Example 1: Back up the entire hard disk Use the dd command to back up the entire hard disk. In this example, the device name of the source hard disk is /dev/sda, and the device name of the target hard disk is /dev/sdb. Execute the dd command to back up the entire hard disk /dev/sha to another hard disk in the same system.
- LINUX 1150 2024-02-13 18:00:11
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- Solution to Deepin Linux installation failure and inability to enter after installation
- As a Linux enthusiast, Xiaosi Linux has also encountered many problems during the use of Deepin Linux. The problems of failure to install Deepin Linux and being unable to enter after installation are relatively common. In order to help everyone solve this problem, Xiaosi Linux has specially compiled This article hopes to provide you with some help. Reasons and solutions for Deepin Linux installation failure There are many reasons for Deepin Linux installation failure. It may be due to hardware incompatibility, system setting errors, problems with the installation program itself, etc. In order to solve this problem, we can try the following methods: 1. Check Hardware Compatibility: Make sure your computer hardware is compatible with Deepin Linux. 2. Check the system settings: Before installing Deepin Linux, make sure your computer
- LINUX 855 2024-02-13 17:42:08
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- Detailed steps and precautions for installing CentOS6.7 via UEFI
- As an open source operating system, LINUX is favored by more and more users. CentOS, as one of its important branches, is highly praised for its stability and security, and UEFI (Unified Extensible Firmware Interface) is The new generation firmware interface that replaces the traditional BIOS has gradually become a standard feature of new computers. This article will introduce in detail how to install CentOS6.7 in UEFI mode and give some precautions. Preparation steps for installing CentOS 6.7 in UEFI mode. Before starting the installation, make sure you have made the following preparations: 1. Download the ISO image file of CentOS 6.7 and write it to a USB or CD. 2. Make sure your computer supports UEFI mode,
- LINUX 1047 2024-02-13 17:33:09
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- How to install and use i3 window manager on Linux
- i3wm (i3 Window Manager) is written in C and is a lightweight, easy to configure and popular tiling window manager. Unlike traditional desktop environments, Tiling Manager provides just enough functionality to arrange windows on the screen in an easy and attractive way that suits your workflow. i3 is a minimalist tiling manager that intelligently arranges windows on the screen in a seamless, non-overlapping manner. Other tiling managers include xmonad and wmii. In this guide, we will explain how to install and use i3 window manager on a Linux desktop system. i3 window manager benefits compared to XWindows managers such as Fluxbox, KWin and enlightenment
- LINUX 1145 2024-02-13 17:18:14
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- Share the method of finding the docker.service file path in Linux
- When configuring docker in Linux, it is often necessary to modify the contents of docker.service. Different Linux systems and versions have different paths to this file. Today, let’s talk about a relatively standard way to find it. The system I use here is Ubuntu22.04 desktop version. 1. Open the terminal and enter the following command sudosystemctlstatusdocker.service in the terminal and press Enter to execute. 2. Check the real path of docker.service. In the returned result, you can see the docker.service real path
- LINUX 591 2024-02-13 17:10:02
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- Deepin Linux system CD installation tutorial
- Deepin Linux system is an operating system based on the open source Linux kernel. It has the advantages of stability, security, and ease of use. This article will introduce you to the detailed steps and precautions on how to use a CD to install Deepin Linux system. Preparation work Before installing Deepin Linux system, you need to make the following preparations: a Deepin Linux system installation CD and a computer. The minimum configuration is: Pentium 4 processor, 512MB memory, 20GB hard disk space, CD-ROM or DVD-ROM Driver installation steps 1. Insert the Deepin Linux system installation CD into the computer CD-ROM drive and restart the computer. 2. Enter the BIOS settings and set the computer startup method to boot from the optical drive. 3. Enter Deepin Linux system installation
- LINUX 691 2024-02-13 17:06:09
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- Efficient and easy, a powerful tool for system monitoring in Linux batch mode
- In Linux systems, we often need to monitor and adjust system resources to ensure the normal operation and efficient use of the system. Using the top command is one of the most common system monitoring methods, but in actual operation, the interactive interface of the top command is not convenient, especially when the system running load is high, the real-time refresh of the top command will Bring additional system burden. This article will introduce a more efficient and easier system monitoring tool in Linux batch mode - the top command in batchmode. The top command is used to display real-time processing activities in a Linux system, as well as kernel management tasks. It will show CPU and memory usage and other information such as running programs. Can
- LINUX 981 2024-02-13 17:00:13
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- Debian 8 installation tutorial
- As a popular Linux distribution, Debian is widely used in servers and personal computers. This article will introduce in detail how to install the Debian8 system on your computer. Preparing for installation Before starting to install Debian8, you need to make the following preparations: Download the Debian8 installation image file and create a bootable installation media, such as a USB flash drive or CD to back up important data, because installing the operating system may clear the hard disk. All data installation process 1. Insert the installation media into the computer and restart, enter the BIOS settings, and set the computer to boot from the installation media. 2. After entering the Debian installer, select the language and keyboard layout. 3. Select the components and packages to install, if you are not sure
- LINUX 1171 2024-02-13 17:00:08
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- Linux device driver character device: a convenient way to describe and manage sequential access devices
- Have you ever wondered how to write a driver for your character device in Linux? Have you ever thought about how to enable your driver to implement some basic functions in a Linux system, such as opening, closing, reading, writing, controlling, etc.? Have you ever thought about how to enable your driver to implement some advanced functions in Linux systems, such as asynchronous notification, multiplexing, memory mapping, etc.? If you are interested in these issues, then this article will introduce you to an effective method to achieve these goals-Linux device driver character device. A character device is a data structure used to describe sequential access devices. It allows you to pass the information and attributes of the character device to the kernel in a simple and unified way, thereby realizing device identification and driver
- LINUX 1076 2024-02-13 16:54:16
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- How to install Go language for Linux
- Go language, also known as golang, is an open source programming language originally developed by Google. It was designed to follow the three principles of simplicity, security and speed. The Go language has a variety of debugging, testing, analysis and code review tools. Now the Go language and tools are provided in the source libraries of most Linux distributions. In this article, I will explain how to install the Go language for Linux. To install the Go language on Ubuntu, Debian or LinuxMint, Linux distributions based on Debian can be installed using the apt-get command: sudoapt-getinstallgolang. To view the Go language version currently installed on the system, use the following
- LINUX 1309 2024-02-13 16:51:21
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- How to install Windows system in Deepin Linux
- There are two ways to install Windows system in Deepin Linux system, one is to use virtual machine software, the other is to use dual system installation method. To install a Windows system using virtual machine software, you need to install virtual machine software, such as VirtualBox or VMware, in Deepin Linux system, then create a new virtual machine in the virtual machine software, choose to install the Windows system image file, and follow the prompts to complete the installation. It should be noted in this way that the virtual machine software needs to allocate sufficient system resources to the Windows system, otherwise the running performance of the Windows system may be affected. To use the dual-system installation method, you need to first free up a certain amount of space in the Deepin Linux system.
- LINUX 1066 2024-02-13 16:42:29
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