Click the blue “Most Programmer” to follow me! Add a “star“, every day at 18:03 to learn technology together Disk Expansion in Linux Systems After adding the disk in the console, Add Partition After restarting the system, perform the following operations Disk Partitioning [root@oracle ~]# fdisk /dev/sda Welcome to fdisk (util-linux 2.23.2). Changes will remain … Read more
1、ls command is an abbreviation for list. The ls command can be used not only to view the files contained in a linux directory but also to check file permissions (including directory, folder, and file permissions) and to view directory information, etc. Common parameter combinations: ls -a lists all files in the directory, including hidden … Read more
In the battlefield of network security, firewalls act as vigilant sentinels, weaving rules with code to protect the borders of the digital world. When you hold a Linux system in your hands, this operating system, inherently equipped with “security genes,” has already prepared various firewall tools for you. Let us break down the core value … Read more
Linux provides many commands and configuration files. How can we view the usage of these commands and configuration files? The commands and help documentation provided by Linux come with their own help documentation to explain the usage of commands and the format of configuration files. At the same time, Linux provides the <span>man</span> command to … Read more
Physical Device Recognition In Linux, everything is a file. When you connect a new disk to the system, the Linux kernel detects this device through the udev event mechanism: # View the disk devices recognized by the system $ lsblk $ ls -l /dev/sd* Disk devices are typically represented by paths such as /dev/sda, /dev/sdb, … Read more
Introduction Today, we will evaluate the high-precision timers in the Linux kernel, while also conducting cross-testing using a Tektronix oscilloscope and a DS100 Mini digital oscilloscope. Due to project requirements for precise timing cycles, we need to assess its feasibility and verify whether the oscilloscope from Atomic Clock can support the embedded development process. Overview … Read more
File System 1. Experiment Objectives The file system (p583, programming problem) checks the relationship between files and inode on UNIX or Linux systems. On these systems, files are represented by inodes. In other words, an inode is a file (and vice versa). You can complete this exercise on the Linux virtual machine provided in this … Read more
Original link: https://developer.aliyun.com/article/1637555 In Linux systems, the <span>ip</span> command is a powerful tool for managing network interfaces and routing. Compared to the older <span>ifconfig</span> command, the <span>ip</span> command offers more features and finer control. This article will detail the common operations of the <span>ip</span> command to help users manage and configure networks more effectively. <span>ip</span> … Read more
The GNU/Linux operating system was created by Linus Torvalds in 1991 and has since grown through the collaborative efforts of top programmers worldwide, resulting in numerous distributions.1. Red Hat Family: Fedora, RHEL, CentOS, Rocky Linux2. Debian Family: Debian, Ubuntu, Mint, Deepin, Raspbian3. SUSE Family: SUSE Linux Enterprise, openSUSE4. Other Distributions: Arch Linux, Gentoo, Slackware, etc.
The era of the Internet of Things (IoT) is accelerating, becoming a vast potential market. In the field of low-power wide-area networks, various connection technologies are fiercely competing. Currently, the LoRa connection method, based on American chip technology, faces significant limitations due to issues related to security and continuous supply. Many Chinese companies involved in … Read more