Tag: linux

All Posts

• 

  Access Kubernetes NodePort Services with Subdomains

  Published:Jan 8, 2026 |  at 07:50 AM

  Expose Kubernetes NodePort services via subdomains using wildcard DNS and NGINX, without an Ingress controller.

• 

  Presenterm

  Published:Dec 2, 2025 |  at 02:56 PM

  Why I like Presenterm for tech talks: write slides in Markdown, keep them in git, get code highlighting, diagrams and images, and present everything directly from the terminal.

• 

  01 - a GNU Core Utility - ls

  Published:Aug 9, 2025 |  at 06:53 PM

  Master the Linux ls command with this complete guide covering basic to advanced options, hidden features, and modern alternatives to boost your terminal productivity.

• 

  SSH Certificate Authentication

  Published:Aug 29, 2024 |  at 10:22 AM

  Minimal SSH certificate authentication lab: three Docker containers (CA, client, server) where we create a CA key, sign a user key and test SSH logins with certificates.