Avoid common pitfalls in Linux administration by following these practical tips. Learn how to handle permissions, troubleshoot errors, and secure your system effectively. 1. Avoid Running Commands That Change Multiple Properties Instead of running commands that change a large number of properties, focus on specific files or directories related to the issue you are troubleshooting. … Read more
awk is a versatile text-processing tool used to manipulate and analyze data in text files. It is especially useful for tasks like pattern scanning, extracting data, and generating reports. This guide introduces the basics of awk and provides practical examples to help you get started. Introduction to awk awk is a scripting language designed for text processing and data extraction. … Read more
The find command is a powerful tool for Linux system administrators and users alike. It allows you to search for files and directories within a directory hierarchy based on specific criteria. Whether you’re managing on-premises systems or cloud-based environments, mastering the find command can significantly improve your efficiency. In this article, we’ll explore the most common scenarios for using … Read more
The wheel group is a special user group commonly used on Unix-based systems, including Red Hat Enterprise Linux (RHEL), to manage access to privileged commands. Users in the wheel group are granted the ability to execute commands as the superuser (root) by using the sudo command. This guide explains how to add a user to the wheel group and … Read more
Managing user account password expiration is an essential task for Linux system administrators to ensure system security and compliance with organizational policies. The chage command is a powerful tool that allows you to view and modify password expiration settings for user accounts. In this guide, we’ll explore how to check password expiration details, set expiration dates, and … Read more
The yum history command is a powerful tool for system administrators to track and manage package installation and updates on Linux systems. This command provides detailed information about all Yum transactions, making it easier to troubleshoot issues, roll back changes, or audit system modifications. In this guide, we’ll cover how to use the yum history command, interpret its output, … Read more