by Zen Admin | Mar 18, 2025 | Linux, Security, System Administration
SSH (Secure Shell) is a powerful tool for remotely accessing Linux systems, but its default configuration can leave your server vulnerable to attacks. In this guide, we’ll walk through three key steps to harden your SSH setup: changing the default port, restricting...
by Zen Admin | Mar 14, 2025 | Linux, System Administration
Managing disk space is a crucial task for any Linux user or admin. Two command-line tools, df and du, make it easy to monitor disk usage. While they both deal with space, they serve different purposes. Here’s how to use them effectively. df: Disk Free Overview The df...
by Zen Admin | Mar 14, 2025 | Linux, System Administration, Tutorials
When it comes to text processing in Unix-like environments, awk and sed are two powerhouse tools that often confuse newcomers due to their overlapping capabilities. While both are designed to manipulate text, they serve distinct purposes and shine in different...
by Zen Admin | Mar 11, 2025 | Ansible, DevOps, Linux, System Administration
In today’s fast-paced digital world, launching a website that can handle high traffic with rock-solid stability is a must. Whether you’re running a blog, an e-commerce platform, or a dynamic web app, the LAMP stack—Linux, Apache, MySQL, and PHP—remains a go-to...
by Zen Admin | Mar 11, 2025 | DevOps, Docker, Linux, Terraform, Tutorials
Have you ever dreamed of having your own private Netflix—complete with your personal movie collection, TV shows, or even home videos—accessible anytime, anywhere? Today, we’re going to make that a reality using AWS services like S3, Elemental MediaConvert, and ECS,...
by Zen Admin | Mar 4, 2025 | Linux, System Administration, Tutorials, VPS
If you’ve been running your website on shared hosting, you’ve likely enjoyed its simplicity and affordability. But as your site grows—whether it’s a blog, an e-commerce store, or a portfolio—you might start noticing limitations: slow load times, restricted resources,...
by Zen Admin | Mar 3, 2025 | Linux, Security, System Administration, Tutorials
A firewall is your Ubuntu server’s first line of defense, and setting it up doesn’t have to be complicated. Ubuntu’s Uncomplicated Firewall (UFW) makes securing your system easy, even if you’re new to Linux. In this guide, we’ll walk you through how to set up a basic...
by Zen Admin | Feb 27, 2025 | ARM64, System Administration, VPS
When your website starts pulling in serious traffic — thousands of visitors daily, spiking during launches or campaigns — your hosting setup becomes the backbone of its success. Shared hosting, the go-to for small sites, quickly buckles under pressure, leaving you...
by Zen Admin | Feb 26, 2025 | Linux, Security, System Administration, Tutorials, VPS
Secure Shell (SSH) is a cornerstone of secure remote access in Linux environments. While password-based authentication is common, SSH key authentication offers superior security and convenience. By using cryptographic keys instead of passwords, you eliminate the risk...
by Zen Admin | Feb 25, 2025 | Linux, Tutorials
The grep command in Linux is a powerful tool for searching text patterns within files or input streams. Whether you’re a system administrator, developer, or casual user, mastering grep can save you time when sifting through logs, code, or data. Let’s dive into...
