Linux PATH Environment Variable: View, Add and Update
Content1 Key Takeaways2 Prerequisites3 Understanding How the Linux PATH Variable Works4 Step 1 – Viewing the Current PATH Variable5 Step 2 – Adding a Directory to PATH for the Current…
OpenSSL Guide: SSL Certificates, Private Keys & CSRs
Content1 How to Use This OpenSSL Guide2 Key Takeaways3 What Is OpenSSL and Why It Matters for SSL/TLS Management4 Generating Private Keys with OpenSSL5 Creating Certificate Signing Requests (CSRs)6 Creating…
SQL COMMIT, ROLLBACK & SAVEPOINT: Transaction Guide
Content1 Key Takeaways2 Prerequisites3 What Is a SQL Transaction?4 What Is COMMIT in SQL?5 What Is ROLLBACK in SQL?6 What Is a SAVEPOINT in SQL?7 SQL COMMIT and ROLLBACK Examples8…
How to Prevent Line Breaks in CSS: Complete Guide
Content1 Key Takeaways2 Prerequisites3 What Causes Unwanted Line Breaks in CSS4 Using white-space: nowrap to Prevent Line Breaks5 Using overflow-wrap to Control Word-Level Breaking6 Using word-break to Control Hyphen and…
How to Add Swap Space on Ubuntu 20.04 and 22.04
Content1 Key Points for Configuring Swap on Ubuntu2 Prerequisites for Adding Swap Space3 What Swap Space Is and When a Linux Server Needs It4 Step 1 – Check Existing Swap…
Install & Configure TigerVNC on Ubuntu 22.04 & 24.04
Content1 Key Takeaways2 Prerequisites3 Choosing a VNC Server for Ubuntu4 Step 1 — Installing the Desktop Environment5 Step 2 — Handling Wayland on Ubuntu 22.04 and 24.046 Step 3 —…
SQL COUNT Explained: Syntax, Examples & Performance
Content1 Key Takeaways2 Prerequisites3 Sample Schema Used in This Tutorial4 What Is the SQL COUNT Function?5 COUNT(*) vs COUNT(column) vs COUNT(DISTINCT column)6 SQL SELECT COUNT with a WHERE Clause7 SQL…
Python Decorators: Syntax, Examples & Best Practices
Content1 Key Takeaways2 The Core Idea3 Why Decorators Matter, Especially in Real Projects4 How Decorators Work Internally5 Better Version Using *args and **kwargs6 Why This Is Powerful7 Common Practical Examples…
Nginx A/B Testing, Analytics and GeoIP Configuration
Content1 Simple A/B Testing in Nginx with the Split Clients Module2 Using the empty_gif Directive for Tracking Pixels3 Serving Different Content Based on Geographic Location4 Conclusion Vijona20 Aug at 10:58…