Tutorials
Step-by-step technical guides on Docker, Linux, Python, Go, and more.
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tmux Tutorial 2026: From Zero to Productive with Sessions, Config, and Neovim Integration
Complete tmux tutorial 2026: sessions, windows, panes, full .tmux.conf config, automation startup script, SSH persistence, neovim integration with vim-tmux-navigator, and tpm plugins.
Ansible Roles and Galaxy: Modular Playbooks for Production (2026)
Ansible roles tutorial 2026. Create roles with tasks, templates, handlers, and defaults. Use Ansible Galaxy community roles, pin versions in requirements.yml, and test with Molecule + Docker.
awk, sed, and grep for Linux Sysadmins: Practical Guide with Real Examples (2026)
Master awk, sed, and grep for Linux sysadmin work in 2026. Parse nginx logs, edit configs in-place, filter processes, and build log analysis pipelines. Every example is real-world.
Claude Code: Complete Terminal AI Agent Guide (2026)
Complete Claude Code tutorial 2026. Install, configure CLAUDE.md, use subagents, integrate MCP servers, run in GitHub Actions CI. Anthropic's SOTA coding agent lives in your terminal.
Cursor AI v3: Complete Guide to Background Agents and Subagents (2026)
Master Cursor AI v3 in 2026. Background Agents run async while you code, Subagents parallelize large refactors, Plan Mode reviews before executing. Teams report 20-40% faster delivery.
Cursor vs Claude Code vs GitHub Copilot: Honest Comparison (2026)
Cursor v3 vs Claude Code vs GitHub Copilot in 2026. Benchmark results on real coding tasks, pricing, context windows, and when to use each. Honest verdict for developers.
Docker Multi-Stage Builds: From 1.2GB to Production-Ready Images (2026)
Docker multi-stage builds tutorial 2026. Reduce Python images from 1.2GB to 120MB, Go binaries to 5MB with FROM scratch. Size comparison table, cache optimization, and GitHub Actions integration.
GitHub Actions CI/CD: Python + Docker + VPS Deployment (2026)
Complete GitHub Actions CI/CD tutorial 2026. Test Python, build Docker image, push to GHCR, deploy to VPS via SSH. Includes dependency caching, OIDC secrets, matrix builds, and local testing with act.
Hashcat Advanced Tutorial: Masks, Rules, and GPU Optimization (2026)
Hashcat advanced tutorial 2026. Mask attacks, rules with OneRuleToRuleThemAll, hybrid wordlist+mask attacks, WPA2 cracking workflow, session management, and GPU optimization for maximum speed.
Kubernetes for Beginners: First Deployment with kind (No Cloud, Free, 2026)
Kubernetes tutorial for beginners 2026. Use kind to run a local K8s cluster with Docker — no cloud account, no cost. Covers Pods, Deployments, Services, ConfigMaps, Secrets, and HPA.