Learn Linux

As a system administrator, it’s essential to have a solid understanding of various Linux performance commands to monitor, optimize, and troubleshoot your systems. These commands provide valuable insights into resource usage, system processes, and overall performance, helping you maintain a stable and efficient environment.

The sysstat utility is a powerful tool for monitoring system performance on Ubuntu and other Linux distributions. However, you may encounter an error when running ‘sar -u’, indicating that data collecting is not enabled.

Systemd has become the default init system for most Linux distributions, providing an efficient way to manage services and their dependencies. Creating a custom Linux service using systemd allows you to control the behavior and execution of your applications or scripts.

In this guide, we will explore various methods to find the default gateway IP in Linux, using both command-line tools and the graphical user interface. Whether you’re a seasoned Linux user or just starting your journey, these techniques will equip you with the knowledge you need to navigate the world of Linux networking with confidence.

Learn how to empty or clear system log files in Linux using various methods, including manual commands, logrotate, and Stacer. Keep your system organized and save disk space by managing log files efficiently.

In this guide, we will discuss the importance of GPG keys, how to identify expired keys in Linux package management systems, and the methods to update and maintain your system’s keyring to ensure a secure and seamless software repository experience.

Discover how to find all files with a specific extension in Linux using powerful command-line utilities like ‘find’ and ‘grep’. This guide will walk you through the process, helping you streamline your workflow and manage your files effectively in a Linux environment.

In this article, we’ll explore various tips and tricks that can help you optimize your Linux device performance, ensuring that your system runs smoothly and efficiently. We’ll cover topics such as choosing the right distribution, optimizing system settings, managing resources, and maintaining a clean file system.

In this article, we’ll examine how symbolic links can be used to manage shared files, avoid breaking dependencies, and create aliases for frequently used commands or scripts. We’ll also provide step-by-step instructions for creating symbolic links using the ln command, as well as tips for troubleshooting common issues.

In this article, we will explore five different ways to find file owners in Linux. File ownership is an important aspect of file and directory management in Linux. Understanding who owns a file can help you troubleshoot issues, manage access control, and understand file system permissions. By using various command-line tools and utilities available in Linux, you can easily find the owner of a file or directory.