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- How to use the sed command tool
- sed Usage Using sed can realize most of the functions of grep, and it can also search and replace. Syntax: sed[options]'command'filenamesed[options]-fscriptfilefilenameOptions: -n: The -n option is used with the p command to indicate printing -e: Equivalent to --expression, multi-point editing, used to execute multiple commands on one line sed implements matching (grep) function = prints lines with root string [root@cham2sed]#sed-n'/root/'ptest.txtroot:x:0:0:root:/root:/b
- LINUX 848 2024-04-13 13:40:01
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- How to build an intelligent DNS system wdDNS under CentOS
- v3 functional highlights 1 Completely reconstructed, with higher performance and more stability 2 Data supports text and mysql database methods, more flexible and needs to be selected 3 Independent operation, not lazy wdCP, easier to deploy and expand 4 Supports API call development, easy to personalize Support and Service 5 supports batch operations, which is suitable for the special needs of station groups or special users. Currently v3 does not have business systems, such as multi-user support, online payment and self-service activation, traffic statistics, etc. It is more suitable for individuals or small and medium-sized enterprises for their own use, station group applications, and internal If you need a smart DNS operating version for network resolution applications, local DNS hijacking applications, etc., you can still consider the v2 version, or wait for the subsequent upgraded version of v3. In order to provide better service and support, v3 will continue to provide free basic version and paid advanced version. Version installation environment instructions
- LINUX 710 2024-04-13 08:04:20
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- How many minutes does it take to reboot Linux using the reboot command?
- The restart time for Linux to execute the reboot command depends on factors such as system configuration, startup service, and file system check. It is usually: mid-range server: 3-5 minutes. High-performance workstation: 2-3 minutes. Low-end virtual machine: 5-10 minutes. Systems that start a large number of services: may exceed 10 minutes
- LINUX 941 2024-04-12 14:18:13
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- What are the classifications of linux systems?
- Linux systems can be divided into 6 categories according to their uses and characteristics: desktop distributions (Ubuntu), server distributions (RHEL), embedded systems (Yocto Project), mobile operating systems (Android), cloud computing platforms and special-purpose distributions ( Kali Linux, Puppy Linux).
- LINUX 868 2024-04-12 14:15:16
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- What are the components of a linux system?
- The main components of a Linux system: Kernel: Responsible for hardware management, process scheduling, memory management and file systems. System libraries: Provide functions required for application development and operation. Shell: Provides a command line interface for interacting with the system. File system: A hierarchical structure that organizes and stores data. Desktop environment: Provides a graphical user interface (GUI) for intuitive interaction. Application software: Programs used to perform specific tasks. Documentation: Provides detailed information on commands, configuration, and troubleshooting.
- LINUX 1148 2024-04-12 14:06:14
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- What three parts does a linux system consist of?
- The Linux system consists of three main components: the kernel, which is responsible for hardware management and system functions; the Shell, which provides a command line interface for users to interact with the system; and application software, which is a variety of programs that users use daily.
- LINUX 1257 2024-04-12 14:00:15
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- In which folder are the linux system wallpapers located?
- The default wallpapers on Linux systems are usually located in the /usr/share/backgrounds folder. In addition, different distributions or desktop environments may store wallpapers in other locations, such as Ubuntu (/usr/share/gnome-background-properties/), Fedora (/usr/share/wallpapers), KDE Plasma (/usr/share/ wallpapers), GNOME Shell (/usr/share/gnome/backgrounds). If you can't find a specific wallpaper in a preset or common location, you can use
- LINUX 1533 2024-04-12 13:57:16
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- Which command to use to create a directory in linux
- In Linux, the command to create a directory is mkdir. It supports the creation of nested directories, the creation of multiple directories simultaneously, and provides options to control creation behavior, such as setting permissions and automatically creating parent directories.
- LINUX 750 2024-04-12 13:54:16
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- Which Linux system is easy to use?
- For beginners, Ubuntu and Mint are the most friendly; for advanced users and developers, Fedora and Arch Linux are more suitable; if stability and reliability are required, Debian is the best choice; customization and lightweighting are required, Arch Linux is worth considering; seek Widely supported, Ubuntu is the first choice.
- LINUX 1379 2024-04-12 13:51:13
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- What fields are Linux systems mainly used in?
- The main application fields of Linux systems include: Server field: servers (such as web servers, database servers, mail servers), virtualization. Desktop areas: personal computers, laptops, education. Embedded systems: routers, smart devices, cars. Cloud Computing: Virtual Private Servers, Containers, Distributed Systems. Other areas: Engineering and Science, Blockchain, Internet of Things.
- LINUX 968 2024-04-12 13:48:18
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- Which version of linux system is easy to use?
- For beginners, the best Linux versions include Ubuntu, Mint, and Zorin OS, which are known for their ease of use. Feature-rich versions include Fedora, Debian and OpenSUSE, offering the latest software and advanced features. Specific-purpose versions include Kali Linux (ethical hacking), CentOS (server), and Arch Linux (rolling distribution). Experience level, usage, hardware compatibility, and community support should be considered when selecting the appropriate version.
- LINUX 1392 2024-04-12 13:45:16
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- Which version of linux operating system is best to use?
- There is no one-size-fits-all answer to choosing the best Linux distribution. Based on popularity and user feedback, recommended versions include: Ubuntu: Suitable for beginners to advanced users, offering user-friendliness, extensive software support, and an active community. Linux Mint: A Windows alternative that offers a stylish desktop environment and pre-installed Windows-style software. Fedora: For developers and system administrators, it provides cutting-edge technology and a stable package management system. CentOS: Based on RHEL, focusing on stability and security, suitable for enterprises and system administrators. Debian: An old and stable distribution known for its package management system and commitment to free software.
- LINUX 1320 2024-04-12 13:42:18
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- What are the commands for installing driver modules in Linux systems?
- In Linux systems, the commands to install the driver module include: List PCI device details: lspci View driver module information: modinfo Load the driver module: insmod Uninstall the driver module from the kernel: rmmod Update module dependency database: depmod Automatically load and unload modules , and resolve dependencies: modprobe
- LINUX 1475 2024-04-12 13:39:12
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- What are the commands to create a folder in Linux?
- Common commands for creating folders in Linux include: mkdir: Create a new folder. touch: Create the folder if it does not exist. install: Copy files or create directories. umask: Set the permission mask to create a full permission (777) folder. xargs: Input through pipes and create folders.
- LINUX 690 2024-04-12 13:36:44
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- What are the jobs in Linux?
- Linux jobs include: system administrators, network engineers, software developers, cloud engineers, security analysts, big data engineers, DevOps engineers, trainers, pre-sales engineers and project managers. With the development of Linux technology, new jobs and Opportunities will continue to arise.
- LINUX 724 2024-04-12 13:33:14
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