Source: Java-based web project It is well known that Ubuntu is one of the most popular Linux distributions. After Microsoft embraced Linux, Windows became the best Linux distribution (not really). What kind of sparks would fly if the two were combined? Introduction to Wubuntu Wubuntu, also known as “Windows Ubuntu”, is an operating system developed … Read more
Create DirectoryCreate a subdirectory in the current directory # Create a subdirectory named mengyuan in the current directory mkdir ./mengyuan Create multiple levels of subdirectories in the current directory # Create a subdirectory named mengnianxi in the subdirectory named mengyuan in the current directory # Note: With the -p parameter, if the subdirectory named mengyuan … Read more
There are three types of permissions: rwx, which stand for read, write, and execute. Files correspond to three object groups. Each object group protects the three types of permissions: rwx. The three object groups are the owner’s permissions, the group’s permissions, and the permissions for other users in the system. Binary representation of permissions: r … Read more
Press the up key to select the installation of Linux and press Enter to confirm Select software environment: minimal installation, additional software: standard installation, UNIX compatibility, network server, system tools Set up network and hostname Set root password Setup complete — starting system installation System image file: OracleLinux-R8-U8-x86_64-dvd.iso Link: https://pan.baidu.com/s/1EKFVL9aY9tA78LijcpcBZw?pwd=7264 Extraction code: 7264 Long press … Read more
The packet reception process of the Linux network card is as follows: The network card receives the data packet. The data packet is moved from the network card hardware buffer to the server memory (using DMA, without going through the CPU). A hardware interrupt notifies the CPU to process it. The CPU notifies the kernel … Read more
It is well known that Ubuntu is one of the most popular Linux distributions. After Microsoft embraced Linux, Windows became the best Linux distribution (not really). What kind of sparks would fly if the two were combined? Introduction to Wubuntu Wubuntu, also known as “Windows Ubuntu”, is an operating system developed based on Ubuntu, characterized … Read more
1. IntroductionRecently, a group member in our WeChat group encountered a problem: on an ARMv8 architecture CPU, after the Linux system starts, when dynamically enabling 1G huge pages, the maximum contiguous memory allocated is only 32M.This has caused confusion among everyone, and with this issue in mind, today we will discuss huge pages.2. What are … Read more
Regular expressions include basic and extended regular expressions. ★ Basic Regular Expressions (BRE) Executed using the grep command grep/sed/awk support basic regular expressions 01- ^ indicates lines starting with… ## cat -A can display spaces and other placeholders$ cat -A oldboy2.txtI am oldboy teacher!$I teach linux.$$I like badminton ball ,billiard ball and chinese chess!$my blog … Read more
What is a file? 01 In the Linux system, a file is an abstract representation of various resources (such as data, hardware devices, inter-process communication, etc.), following the principle of “everything is a file.” Whether it is ordinary data, directories, hardware devices, or inter-process communication interfaces, they all exist in the form of files and … Read more
w- Displays the currently logged-in user information in the system. ab- Apache server performance testing tool. ld- Links object files to create an executable program. xz- A tool for POSIX platform development with high compression rates. ln- Used to create links for files. ar- Creates or modifies archive files, or extracts from archive files. fg- … Read more