Reference
DevOps cheat sheets
One page per tool, with the commands you actually use grouped by job. Commands that delete data are marked, and each page names the version every command was checked against, with links to the official documentation it was checked with.
- Docker cheat sheet Verified against Docker CLI 29.6.2, Compose v5.3.1 The Docker commands you reach for daily — run, build, logs, exec, compose and cleanup — with each flag checked against the current Docker CLI.
- OpenSSL cheat sheet Verified against OpenSSL 3.6.3 OpenSSL 3 commands for keys, CSRs, self-signed certificates, checking a live TLS endpoint, format conversion and hashing, each one run before publishing.
- jq cheat sheet Verified against jq 1.8.2 jq filters for pulling fields, filtering arrays, reshaping objects and emitting CSV or shell lines, each one run against the sample file on this page.