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Why SSH? SSH (Secure Shell): Encrypted authentication protocol No password needed after setup More secure than HTTPS Uses public/private key pairs Key Concepts Public Key Safe to share Added to GitHub account Like a lock Private Key Never share Stays on your computer Like a key that opens the lock SSH Agent Background program Holds private keys in memory Prevents re-entering passphrase Generate SSH Key # Generate Ed25519 key (modern, secure) ssh-keygen -t ed25519 -C "your_email@example.com" # When prompted: # File: Press Enter (default ~/.ssh/id_ed25519) # Passphrase: Optional (press Enter to skip) Output: ...

What is Hugo? Hugo: Fast static site generator written in Go Converts markdown → HTML No database needed Extremely fast builds (milliseconds) Single binary (easy installation) Key Concepts Static Site Generator Builds HTML files at build time (not runtime) No server-side processing Just serve files (S3, CloudFront, etc.) Content Written in markdown (.md files) Stored in content/ directory Organized by sections (folders) Theme Controls site appearance Layouts, CSS, JavaScript Can customize or use existing Front Matter Metadata at top of markdown file Between --- markers YAML, TOML, or JSON format Project Structure my-site/ ├── hugo.yaml # Site configuration ├── content/ # Your markdown files │ └── posts/ │ └── my-post.md ├── themes/ # Theme files │ └── PaperMod/ ├── static/ # Static files (images, etc.) ├── layouts/ # Custom layouts (optional) └── public/ # Generated site (after build) Create New Post # Create new post hugo new posts/my-study-note.md # Opens: content/posts/my-study-note.md Generated file: ...