Cheatsheets

Choose a topic or search all topics. Search matches topic names, section titles and example text. Sections can be collapsed; searching opens matches and clearing the search restores their previous state.

The copy button copies exactly the displayed example, including line breaks. Examples are reference notes with placeholders, comments and sometimes several commands per line; they are not complete scripts. Syntax and shortcuts can differ by version, platform or dialect. Many reference texts currently fall back to English.

The hash sample calculates the UTF-8 bytes of hello, without a newline, only when requested. Switching topics discards pending output. Reference content is bundled locally; clipboard access and Web Crypto depend on browser support.

Fast checksums are not password storage schemes. See the OWASP password storage guidance.