Linux servers are the backbone of many critical systems and services, powering everything from web applications to databases and cloud infrastructure. As a system administrator, ensuring the security of these servers is paramount. Cyber threats are constantly evolving, and vulnerabilities can be exploited if not properly addressed. In this article, we’ll explore Linux server security …

We can utilize the “auditd” service to check when a user account was created. Let’s introduce auditd service first. The auditd service in Linux is a robust auditing framework. It is designed to track and record various system events and activities, providing administrators with detailed logs and audit trails for system security, compliance, and troubleshooting …

The widely used instant messaging application, Discord, is currently experiencing a global outage. Numerous users have reported encountering a perplexing “Sorry, you have been blocked” notification upon attempting to access the app. The issue appears to affect Discord across all platforms, including desktop, web, and mobile, rendering users unable to access Discord.com as indicated by …

In the output of the systemctl status command, “active (exited)” indicates the current state of a systemd service. Let’s break down what “active (exited)” means: Active: This part of the status indicates the current operational state of the unit. In this case, “active” means that the unit is currently running or has completed its execution. …

Linux systems rely on a multitude of services to perform a wide range of tasks, from networking and security to system monitoring and application support. In this comprehensive guide, we will delve into the heart of Linux service management, demystifying the process of checking whether a service is enabled on your Linux system. Understanding systemd …

In this post, we’re going to explore how to find and deal with empty files and folders in Linux, and we’ll keep it simple. Whether you’re new to Linux or just want to clean up your computer, this guide will help you easily locate and manage empty files and folders. We’ll take you through the …

In the world of Linux system administration, the ability to manage and troubleshoot network interfaces is a fundamental skill. There are situations where you might encounter connectivity issues, need to apply configuration changes, or simply want to reset a network interface to its default state. In such scenarios, the knowledge of how to gracefully restart …

Core dumps are binary files that contain the memory image of a crashed process, which can be invaluable for debugging purposes. To collect a core dump file in Linux, you need to configure your system to generate core dumps when a program crashes. By default, many Linux distributions disable core dumps to save disk space …

The systemctl command is a powerful tool in Linux systems that serves as the interface to control and manage the systemd init system. It is a central component responsible for initializing, managing, and maintaining various system processes and services during the boot process and while the system is running.  With systemctl, users can start, stop, …

The “too many logins for user” error occurs when a user attempts to log in to a Linux system but is denied access due to reaching the maximum allowed number of concurrent (simultaneous) login sessions. Here’s an example scenario: Let’s say we have a user named “alice” on a Linux system, and the system administrator …