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Docker Compose Patterns for the Homelab — Beginner to Pro
Complete beginner guide to organizing self-hosted services with Docker Compose, yaml syntax breakdown, persistent volumes, networking, and safe updates.
Debugging DNS with dig, host, and nslookup — Complete Sysadmin Toolkit
Master DNS troubleshooting with dig, host, and nslookup, trace root-to-leaf resolution, understand RCODE errors (NXDOMAIN, SERVFAIL), and diagnose cache delays.
SSH Hardening — Keys, sshd_config, and Brute-Force Protection
Complete step-by-step guide to securing SSH access on Linux servers using Ed25519 keys, disabling passwords, hardening daemon configuration, and testing.
tmux — Terminal Multiplexer for Persistent SSH Sessions
Complete beginner guide to tmux, managing persistent sessions across SSH disconnects, splitting terminal panes, keyboard shortcuts, and configuration.
Git Crash Course — Clone, Branch, Commit, and PR
A complete beginner-friendly Git workflow covering essential commands, flags, branch management, and contributing to open-source repositories.