In the ever-evolving landscape of cybersecurity, we face a constant challenge to fortify systems against potential threats. One pivotal aspect of this defense is […]
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Exim is a popular mail transfer agent (MTA) in Unix-like operating systems. Below is a comprehensive KB that covers essential commands for managing Exim
Managing Exim Mail Server in Linux Read More »
Are you grappling with a sluggish Linux system or receiving ominous warnings about high disk usage? Fear not! This guide will walk you through
Find High Disk Usage in Linux: A Simple Guide Read More »
A redirect is a way to send both users and search engines to a different URL from the one they initially requested. This guide
How to Create Redirects with Nginx Read More »
In Ubuntu 20.04, I encountered a common issue with DNS server resolution management. The system component responsible for this, systemd-resolved, dynamically updates the /etc/resolv.conf
How to change DNS server permanently on Ubuntu 20.04? Read More »
Suppose you’re using an older Ubuntu version and are eager to explore the new features, security enhancements, and performance improvements in Ubuntu. In that
How to Upgrade Ubuntu Via Command Line? Read More »
A shell is a command-line interface (CLI) that provides a user with a way to interact with an operating system, execute commands, and manage
Linux Bash Script: Important Commands To Know Read More »
A Private Enhanced Mail (PEM) key is a widely used file format for storing cryptographic keys and certificates. In the context of securing SSH
How to Generate PEM Key and Connect to a Linux Machine? Read More »
Are you struggling with performance issues on your Linux server? Understanding how to check and analyze memory usage is crucial for optimizing system performance
Monitoring & Optimizing Linux Memory Usage for Server Performance Read More »
File ownership and group ownership are fundamental concepts in the Linux operating system. Properly managing these attributes is essential for controlling access to files
Managing File Ownership and Group Ownership in Linux Read More »
