Linux Survival Basics
The commands to inspect a machine before guessing.
Risk mix: 1 caution-rated, 47 inspection-first
problems
Browse by what broke
Find commands by operating area, with counts and a plain risk mix for each problem.
6 problems
Problem catalog
Web Server Rescue
Small checks that separate DNS, TLS, Nginx, and app failures.
Risk mix: 1 caution-rated, 20 inspection-first
Dangerous Commands
Commands worth understanding before copying from the internet.
Risk mix: 3 caution-rated, 1 inspection-first
Cybersecurity Triage
Defensive commands for checking exposure, logs, permissions, and suspicious activity.
Risk mix: 1 caution-rated, 68 inspection-first
Hosting Operations
Web hosting, SSL, DNS, Nginx, deployment, backups, and VPS management.
Risk mix: 9 caution-rated, 124 inspection-first
Apple Terminal
macOS and Apple-adjacent terminal workflows for developers and power users.
Risk mix: 2 caution-rated, 8 inspection-first