vanvuvuong

Setting Up DNS over HTTPS (DoH) Using cloudflared

This guide explains how to set up DNS over HTTPS (DoH) on a Linux system using cloudflared. DoH ensures that your DNS queries are encrypted and secure, protecting your online privacy and preventing third-party monitoring of your internet activity.

Table of Contents

1. Prerequisites
2. Step-by-Step Installation and Configuration
   • Install cloudflared

• Set Up DoH Proxy

vanvuvuong

Go - The Ultimate Folder Structure

Organizing your Go (Golang) project's folder structure can help improve code readability, maintainability, and scalability. While there is no one-size-fits-all structure, here's a common folder structure for a Go project:

project-root/
    ├── cmd/
    │   ├── your-app-name/
    │   │   ├── main.go         # Application entry point
    │   │   └── ...             # Other application-specific files

vanvuvuong

ARN Base Pattern

arn:<aws_parition>:<aws_service>:[<aws_region>]:<account_id>:<root | resource_type>:/<resource_name>[/<sub_resource_names>...]

i.<aws_partition>

Regex: (aws|aws-us-gov|aws-cn)

ii. <aws_service> - No fixed pattern:

vanvuvuong

A curated list of AWS resources to prepare for the AWS Certifications

A curated list of awesome AWS resources you need to prepare for the all 5 AWS Certifications. This gist will include: open source repos, blogs & blogposts, ebooks, PDF, whitepapers, video courses, free lecture, slides, sample test and many other resources.

---

vanvuvuong

# To list installed distributions
wsl -l
wsl --list

# To list installed distributions along with its running status and wsl config being 1 or 2
wsl -l --verbose
wsl -l -v

# To run a specific distro
wsl -d distro_name

vanvuvuong

Markdown Text 101

Want to inject some flavor into your everyday text chat? You're in luck! Discord uses Markdown, a simple plain text formatting system that'll help you make your sentences stand out. Here's how to do it! Just add a few characters before & after your desired text to change your text! I'll show you some examples...

What this guide covers:

• Text Formatting
• Organizational Text Formatting
  • Headers
• Masked Links

vanvuvuong

Processing JSON using jq

jq is useful to slice, filter, map and transform structured json data.

Installing jq

On Mac OS

brew install jq

vanvuvuong

Reference: https://help.ubuntu.com/community/Oracle%20Instant%20Client

Tested on: Ubuntu 18.04, 20.04

1. Decide which version of the Oracle client to install

   • Each version of the client supports certain versions of the database; for example, Oracle client 12.1 supports Oracle database 10.2 - 19c
   • See here for more information: http://support.oracle.com/epmos/faces/DocumentDisplay?id=207303.1

2. Download the Oracle client packages

   • Go here and download the desired RPM package(s): https://www.oracle.com/database/technologies/instant-client/downloads.html

vanvuvuong

Windows Preparation

1. Ensure hypervisor functionality is enabled in BIOS.

   • I know it sounds stupid, but if you already have it enabled, disable it, restart the machine, and enable it again.
   • Otherwise you will hit microsoft/WSL#5363

2. Launch a PowerShell prompt in Administrator mode [Win+X > Windows PowerShell (Admin)]

dism.exe /online /enable-feature /featurename:Microsoft-Windows-Subsystem-Linux /all /norestart

vanvuvuong

figlet "I've got something to say"

figlet -f thick "Make Tech ASCIIer"

date | figlet -f basic