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Browse the complete archive of tech guides and video companions.

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Configure Java Home on Windows

Published on April 30, 2018

Mastering Java: How to Set the JAVA_HOME Environment Variable on Windows (10/11 & Server)

Introduction: Why JAVA_HOME is Essential

Welcome back to Darren’s Tech Tutorials!

Java Windows JDK
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JDK installation on Windows Server 2016

Published on April 30, 2018

Mastering Java: A Step-by-Step Guide to JDK Installation on Windows Server 2016

Welcome to Darren’s Tech Tutorials!

Hey there, tech enthusiasts! Darren here, and today we’re tackling a foundational task crucial for any serious development environment: installing the Java Development Kit (JDK).

Java Windows Server JDK
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Install Guest Additions on Windows

Published on April 29, 2018

Unlock Full Performance: How to Install VirtualBox Guest Additions on Windows (Step-by-Step Guide)

Welcome back to Darren’s Tech Tutorials! If you’ve been running a Windows virtual machine (VM) in VirtualBox, you might have noticed things are a little… clunky. Low resolution, slow graphics, and frustrating file sharing.

VirtualBox Windows VM Guest Additions
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Java Keytool Tutorial: How to generate a Self-Signed certificate using the Java Keytool

Published on April 21, 2018

Mastering the Java Keytool: A Step-by-Step Guide to Generating Self-Signed JKS Certificates

Introduction: Securing Your Applications the Java Way

Hey tech enthusiasts! Darren here, and today we are tackling a foundational skill for securing Java applications, especially for deployments like Apache Tomcat: generating your own self-signed certificates using the powerful Java Keytool.

Java Keytool JKS
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How to Disable Root SSH Access on CentOS 7

Published on April 6, 2018

Essential CentOS 7 Security: Stop the Scanners by Disabling Root SSH Access


Introduction: Why Disabling Root SSH is Non-Negotiable

Welcome to Darren’s Tech Tutorials! If you manage a server—especially one accessible over a public network—security is paramount.

CentOS 7 SSH Linux Security
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Darren's Tech Tutorials Promo

Published on March 14, 2018

Unlock Your Tech Potential: The Ultimate Roadmap to Mastering Linux, Windows Server, and DevOps Tools


Welcome to Darren’s Tech Tutorials! If you’re looking for clear, accessible, and practical guides to the most essential technologies shaping the modern IT landscape, you’ve come to the right place. We believe that complex tech doesn’t have to be complicated, and our mission is to provide you with the step-by-step knowledge you need to succeed, whether you are just starting out or preparing for advanced certification exams.

Linux Windows Server DevOps
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PEM to PPK with puttygen

Published on March 12, 2018

Mastering PuTTY: The Essential Guide to Converting PEM Keys to PPK for AWS and Linux

Hello, tech fans, and welcome back to Darren’s Tech Tutorials!

PuTTY AWS SSH
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How to install Fedora 27 on VMWare Workstation 12

Published on March 4, 2018

Revive Your PC! The Ultimate Guide to Installing Fedora 27 on VMware Workstation


Welcome back to Darren’s Tech Tutorials!

Fedora is one of the most powerful and reliable open-source operating systems available today. It’s not just stable—it’s also remarkably lightweight, making it an excellent choice for breathing new life into older laptops or PCs that might be struggling under heavier operating systems.

Fedora VMware Workstation Virtualization
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