This project is a collection of CLI commands, utilities, and technical knowledge gathered over 15+ years in software engineering.

• 2019-11-10: Lost my Google Docs wiki file. Important lesson learned.
• 2020-04-28: Started this markdown wiki after years of accumulated IT knowledge disappeared.
• 2021-04-07: Processing and reorganizing knowledge base.

I was born in Colombia and started my career in software engineering, systems engineering, and computer science in 2011. I realized it's useful to collect code snippets for different operating systems and platforms. My interests span complex use cases with regex, programming languages, Docker, and more.

Journey: Started with a .txt file (2012) → Google Docs (accidentally deleted 2019) → This markdown wiki (2020-present)

Lesson Learned: Don't rely on the cloud 100%. Maintain local copies of your digital material.

Built by andres.nz — A Colombian adopted by Kiwis since 2016

Professional development, communication, leadership, and personal growth.

• AWS
• Azure
• Google Cloud Platform (GCP)

• Docker
• Virtualization

• CI - Continuous Integration
  • Jenkins
    • Functions
    • Pipeline Templates
• CD - Continuous Deployment/Delivery
  • Spinnaker

• Infrastructure as Code (IaC)
  • Terraform
• Automation Tools
  • Ansible
  • Rundeck

• Build Tools
  • Gradle
  • Maven
• Git

• IDEs - VSCode
• Markdown
• Productivity Tools
  • PDF Tools

• Java
• JavaScript
• Python

• Regular Expressions
• Security
• Testing
• Software-Development-Life-Cycle Overview

• Bash/Shell
• Linux
• Windows
• iOS

• Computer Hardware
• Databases & SQL
• LDAP
• Networking

• Business Process Management

• Multimedia

• categorise the commands below

drawio --version

drawio --export --format png --recursive docs/diagrams/

drawio -x -f png --output devops-continuous-delivery-framework.png devops-continuous-delivery-framework.drawio

drawio -x -f png --scale 2.5 -o devops-loop.png devops-loop.drawio

drawio -x -f png --output tooling-map.png tooling-map.drawio

# verbosity
ELECTRON_ENABLE_LOGGING=1 drawio --export --format svg --recursive --output docs/diagrams/imgs/svgs/ ./docs/diagrams/

• Windows users powershell 7.6 and above set var

$video_name="2025_08_11_DCYL.avi"

• extract the frames

ffmpeg -i $video_name -filter:v "select='eq(t,2)+eq(t,5)+eq(t,7)+eq(t,10)'" -fps_mode passthrough %03d-Colombia-coral-2025-08-11.png -loglevel verbose