<span>useradd</span> is the command used in Linux systems to create new user accounts. It belongs to system management commands and typically requires root privileges (or the use of <span>sudo</span>) to execute. 🔧 Basic Syntax useradd [options] username đź“Ś Common Options Option Description <span>-m</span> Create the user’s home directory (usually named after the username, located at … Read more
The network configuration of Linux systems is one of the core tasks of system administration. However, due to the differences in tools and configuration file formats used by different distributions, the methods for network configuration vary. This article will detail the network configuration methods of mainstream Linux distributions, including temporary configurations, permanent configurations, and the … Read more
Want to check who registered a domain? When does it expire? With the Linux <span>whois</span> command, you can do it in one line! Note: Not all Linux systems have whois installed by default! Don’t worry, we will go through the entire process from “checking → installing → using → interpreting” 👇 âś… Step 1: First, … Read more
This section shares tutorials on commands in the Linux system, which are crucial for front-end developers, back-end developers, and operations personnel. Nowadays, both front-end pages and back-end projects are primarily deployed on Linux servers. If you want to deploy your own service applications, mastering the usage of Linux commands is essential, so this section will … Read more
Technical Alley Read time: 5 minutes Remember to star our public account In Linux systems, managing file and directory permissions is crucial for ensuring system security. Whether it is to limit the operational scope of ordinary users or to ensure that critical files are not accidentally deleted, permission configuration plays an important role. This article … Read more
Whether you are a regular user or a Linux system administrator, there is often a need to automatically execute certain programs at regular intervals. For example, an administrator may need to monitor the system’s disk usage, in which case the <span>cron</span> job scheduler is a convenient tool to achieve this goal. Assuming the system administrator … Read more
useradd(8) Command – Linux 1. Basic Information about the Command 1. Functionality The useradd command is used in Linux systems to create new user accounts or update default new user information. When executed, it combines command line specified values with system default values. It may also update system files, create user home directories, and copy … Read more
Common Linux Errors and Their Solutions In Linux system administration, encountering various errors is a norm. These errors may arise from permission issues, configuration errors, resource shortages, or hardware failures. Timely diagnosis and resolution of these errors can help administrators maintain system stability and performance. 1. Introduction As an open-source operating system, Linux is widely … Read more
Command Overview stat is a powerful command in Linux used to view detailed status information about files or file systems. It is more comprehensive than ls -l, and its output includes, but is not limited to: file size, permissions, owner, last access/modify/status change time, inode number, and device information. Usage The syntax of the stat … Read more
Common Linux Commands – Part 6 6. Application Commands: -t filter: Indicates adding rules at the end of the chain (if no table name is specified, the default is the filter table) -I INPUT: Indicates adding an inbound rule at the first line of the filter table (-I INPUT 2 indicates adding an inbound rule … Read more