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- The interconnection of the printing world - research on printing technology under Linux system
- In modern society, printing technology has become an indispensable part. In the rapidly developing digital era, printing technology under Linux system is particularly important. This article will conduct a series of studies on printing technology under Linux systems and explore how to achieve efficient, stable, and secure printing services under Linux systems. If your printer is not automatically detected by the system, you can find out how to manually add a printer on Linux in this article. This article assumes that you are using the GNOME graphical desktop system, and the setup process is also applicable to KDE or most other desktop systems. Printer Driver When you try to print files with a printer, you must first confirm whether an updated printer has been installed on your Linux system.
- LINUX 664 2024-02-13 12:33:22
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- 6 Linux metacharacters I love using on the command line
- Early on in my Linux journey, I learned how to use the command line. This is what makes Linux unique. I might lose the graphical user interface (GUI), but there's no need to completely rebuild the machine. Many Linux computers run in headless mode, where you can complete all management tasks on the command line. It uses many basic commands that everyone is familiar with, such as ls, ls-l, ls-l, cd, pwd, top, etc. Shell Metacharacters on Linux You can expand each of these commands by using metacharacters. I don't know what you call them, but using metacharacters on the Linux command line is a great way to increase productivity. Pipes | Let's say I want to know all Fi running on my system
- LINUX 431 2024-02-13 12:30:27
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![[Linux System Optimization] Liberate your memory space—swap and buffer optimization guide](https://img.php.cn/upload/article/000/887/227/170779825681886.png?x-oss-process=image/resize,m_fill,h_100,w_220)
- [Linux System Optimization] Liberate your memory space—swap and buffer optimization guide
- Have you ever encountered a Linux system that runs slowly or has insufficient memory? It may be because the swap and buffer in the system are not well configured. This article will give you an in-depth understanding of swap and buffer, and how to optimize them to take your system performance to the next level. What is the memory mechanism of linux? We know that reading and writing data directly from physical memory is much faster than reading and writing data from the hard disk. Therefore, we hope that all data reading and writing are completed in the memory, and the memory is limited, which leads to the physical The concept of memory and virtual memory. Physical memory is the memory size provided by the system hardware. It is real memory. Compared with physical memory, there is also the concept of virtual memory under Linux.
- LINUX 1120 2024-02-13 12:24:14
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- How to change MAC address in Linux
- Changing MAC Address Sometimes, we may not want our real MAC address (physical address) to be exposed on the public network. Alternatively, the network administrator may block a specific MAC address. This article will introduce how to use the macchanger tool to change the MAC address. Environment Centos7.7MinimalGNUMACchanger1.7.0 To query the network card and MAC address, use the following command to query the network card and MAC address: sql copy code [root@localhost~]#iplinkshow1:lo:mtu65536qdiscnoqueuestateUNKNOWNmodeDEFAULTgroupdef
- LINUX 1121 2024-02-13 12:00:32
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- Detailed explanation of Linux kernel timer and delay work driver development
- Linux kernel timers and delay tasks are two commonly used mechanisms to implement scheduled tasks and delayed execution tasks. They allow the driver to execute specific functions at the appropriate time point to adapt to the needs and characteristics of the hardware device. But how do you properly use Linux kernel timers to work with delays? This article will introduce the basic knowledge and skills of Linux kernel timer and delay work driver development from both theoretical and practical aspects, as well as some common problems and solutions. The timer on the kernel timer software ultimately relies on the hardware clock. Simply put, the kernel will detect whether each timer registered to the kernel has expired after the clock interrupt occurs. If it expires, it will call back the corresponding registration function. Do this as an interrupt to the bottom half. Reality
- LINUX 802 2024-02-13 11:57:24
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- Detailed tutorial on installing AnyDesk on CentOS and installing network card driver on CentOS
- It is a very common requirement to install AnyDesk and network card driver in CentOS operating system. AnyDesk is a remote desktop control software that can easily control other computers remotely, while the network card driver is to enable the computer to connect to the network normally. This article will help you Detailed introduction on how to install AnyDesk and network card driver on CentOS. Install AnyDesk1. Open a terminal and log in as root user. 2. Run the following command in the terminal to download the AnyDesk installation package: ```wget-6.3.2-1.el7.x86_64.rpm3. After the download is complete, run the following command to install AnyDesk: yuminstallanyde
- LINUX 1035 2024-02-13 11:42:08
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- The use of thread pool under Linux C
- Do you often encounter the problem that the server load is too high and cannot be accessed normally? Then, you need to understand a very important concept in Linux system-thread pool. By properly configuring the thread pool, you can effectively avoid server overload and improve system stability and reliability. Thread pool is also a multi-thread processing method. The "producer" thread proposes tasks and adds them to the "task queue", and then some threads automatically complete the tasks on the "task queue". Multi-threaded programming creates a thread, specifies it to complete a certain task, and waits for the thread to exit. Although it can meet programming needs, when we need to create a large number of threads, a large amount of CPU may be consumed during the creation and destruction of threads, adding a lot of overhead. like:
- LINUX 681 2024-02-13 11:33:27
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- Linux device tree dts transplantation: how to describe and transfer hardware configuration information
- In Linux systems, the device tree is a tree-shaped data structure that describes hardware configuration. It originates from the OpenFirmware standard and is used to provide an interface between operating system software and hardware to start and run the system. The device tree can reduce the changes required to the kernel to support new hardware, improve code reuse, accelerate the development of Linux support packages, and enable a single kernel image to support multiple systems. This article will introduce the basic steps and methods of Linux device tree dts transplantation, including the device tree's data storage format, source code description syntax, U-Boot and Linux kernel support and parsing process for device trees, etc. Keywords: flat device tree; DTS; PowerPC; Linux services from IBM, Sun and other manufacturers
- LINUX 972 2024-02-13 11:27:12
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- SVN installation on CentOS and command line installation
- Installing SVN on CentOS is a very common operation. It is a powerful version control system that can be used to manage and track changes during software development. This article will introduce in detail how to install SVN on CentOS and provide some commonly used tools. Command line installation method. There are many ways to install SVN on CentOS. Two common installation methods will be introduced below. 1. Open the terminal and log in as the root user. 2. Run the following command to update the system package list: ```yumupdate3. Run the following command to install SVN: yuminstallsubversion4. After the installation is complete, you can verify whether SVN was successfully installed by running the following command: svn --v
- LINUX 786 2024-02-13 11:24:07
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- Analyze the boot process of Linux system startup
- Linux system is a widely used open source operating system with powerful functions and flexible configuration. However, have you ever thought about how the Linux system gradually starts up from darkness when you press the power button? The boot process of Linux system startup is a complex and delicate process, which involves multiple levels and components such as hardware, firmware, boot loader, kernel and user space. This article will analyze in detail the boot process of Linux system startup, including BIOS, MBR, GRUB, initrd, init, etc. The following takes CentOS5.5 version as an example to introduce the boot process of LINUX. The specific process is as follows: Each step is introduced in detail below: 1) The first step firmwar
- LINUX 1139 2024-02-13 11:18:14
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- Streamline storage space and easily manage Linux LVM
- As a Linux system administrator, managing storage space is a very important task. As your business expands, managing hard drive space becomes increasingly difficult. In the case of traditional partitioning, you have to manage the entire partition, but in LinuxLVM, you can set up the storage space more flexibly and easily expand or reduce it when needed. Reducing/shrinking logical volumes poses the highest risk of data corruption. So, try to avoid this if possible, but if there is no other option, go ahead. Before shrinking LVM, it is recommended to make a backup first. When you run out of disk space in LVM, you can do this by shrinking the existing LVM that is not using all the space, instead of adding a new physical disk, on the volume group
- LINUX 460 2024-02-13 11:15:02
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- CentOS hard installation and CentOS installation hardware requirements
- LINUX is an open source operating system with high stability and security. CentOS is a community version developed based on the RedHat Enterprise Linux (RHEL) source code. It is also a commonly used LINUX operating system. Before using CentOS, we need to First perform hardware installation and understand the hardware requirements of CentOS. This article will introduce the hard installation process and hardware requirements of CentOS in detail. CentOS hard installation CentOS can be installed through hard disk installation or network installation. Hard disk installation is to write the CentOS installation media (usually an ISO image file) to the hard disk, and then boot into the installation interface for installation.
- LINUX 964 2024-02-13 11:12:17
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- Dry stuff! 9 high-performance and high-concurrency technical architectures
- 1. Layering Layering is the most common architectural pattern in enterprise application systems. The system is divided into several parts in the horizontal dimension. Each part is responsible for a relatively simple and single responsibility, and then the upper layer controls the lower layer. Dependencies and scheduling form a complete system. In the layered architecture of a website, there are three common layers, namely the application layer, the service layer, and the data layer. The application layer is specifically responsible for the display of business and views; the service layer provides service support for the application layer; the database provides data storage access services, such as databases, caches, files, search engines, etc. The hierarchical architecture is logical. In terms of physical deployment, the three-tier architecture can be deployed on the same physical machine. However, with the development of website business, it is necessary to deploy the hierarchical modules separately, that is, the three-tier structure is divided into two layers.
- LINUX 517 2024-02-13 11:00:29
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- Take stock of 12 performance tuning commands in Linux systems.
- Performance tuning has always been one of the most important tasks for operation and maintenance engineers. If you are in a production environment and encounter slow system response, abnormal hard disk IO throughput, data processing speed lower than expected, or situations such as CPU, If system resources such as memory, hard disk, and network are exhausted for a long time, this article will really help you. If not, please save it first. 1. Check the hardness reading speed of hdparm: Command: hdparm-t/dev/sda5 Print: Timingbuffereddiskreads:254MBin3.01seconds=84.34MB/sec Description: You can specify which hard disk to query! 2,iostat
- LINUX 1240 2024-02-13 10:54:31
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- Compression command in linux
- There are mainly .zip, .gz, .bz2 and .tar.gz and .tar.bz2 compression formats in Linux. 1. .zip, .gz, .bz2 format. zip format syntax: zip compressed file name source file #compressed file (Directories can also be compressed, but only the first directory will be compressed, and the contents in the directory will not be compressed) zip-r compressed file name source directory #compressed directory unzip compressed file name #decompress the file and compress the 11.txt file into: 11.zip file: zip11.zip11.txt Compress the coding directory into: coding.zip file: zip-rcoding.zipcoding (as shown in the figure below, all the files in the compressed directory will be compressed.
- LINUX 739 2024-02-13 10:54:03
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