Staying organised links

Linux cheat sheet

• OpenSSH server on Ubuntu — Install, configure and harden sshd.
• sshd_config manual — Every option, including Match blocks.
• Firewalls on Ubuntu — ufw basics and rules.
• Docker packet filtering and firewalls — Why published ports skip ufw.
• Entra login for Linux VMs — How Entra accounts and the aad_admins group work on a VM.
• explainshell — Paste a command, see what each part does.

Obsidian

• Obsidian — Download and pricing.
• Obsidian help: internal links — Link syntax and automatic link updates.
• Linking Your Thinking — Nick Milo's approach to linked notes and Maps of Content.
• File over app — Steph Ango on why notes should outlive the app.
• Building a Second Brain — Tiago Forte's CODE method.
• Excalidraw plugin — Hand-drawn diagrams inside the vault.

Obsidian to Ghost publishing

• Obsidian — Where my second brain lives.
• Ghost Admin API — Publishing posts and pages programmatically.