Linux Directory Management Commands1. Displaying the Path (pwd) 1. Command Function The pwd command is used to display the absolute path of the current working directory. 2. Command Format The format of the pwd command is:pwd.3. Command Examples Example 1: Log in as the root user and display the home directory of the root user. … Read more
Follow “Java Matters” and select “Star” to receive a free Java book package, whether you are a newcomer or an experienced developer in this new era.Source: Online. When your server’s CPU reaches 100%, how do you troubleshoot the abnormal fault? At the end of this article, a shell script will be shared to help you … Read more
[Image] In the vast realm of the Linux kernel, performance optimization and fault diagnosis stand as two towering peaks, obstructing the path of developers. To scale these two heights, developers are constantly in search of powerful tools. Among them, perf is undoubtedly one of the most dazzling “artifacts.” When running a complex Linux system, have … Read more
RedHat <strong><span>nmcli</span></strong> Tool Overview 1. Overview <span>nmcli</span> is a command-line interface tool provided by NetworkManager for managing network connections in Linux systems. It supports configuration, management, monitoring, and debugging of network devices and connections. For Red Hat-based distributions (such as RHEL, CentOS, etc.), <span>nmcli</span> is the standard network management tool. 2. Installation and Version Check … Read more
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