Bytefork — blogLong-form notes on debugging, dev tools, AI, hardware, and privacy-respecting workflows.https://bytefork.tools/en-usCron day-of-week numbering: POSIX vs Quartz vs AWS (the trap that bites everyone moving expressions between systems)https://bytefork.tools/blog/cron-day-of-week-numbering-trap/https://bytefork.tools/blog/cron-day-of-week-numbering-trap/Sunday is 0 in POSIX cron, 1 in Quartz, and 1 in AWS EventBridge — and the difference silently shifts your job by a day. A field-by-field guide to the four dialects you will actually encounter, with a side-by-side comparison and the conversion rules.Thu, 14 May 2026 00:00:00 GMTcrondevopskubernetesJSON.parse error: "Unexpected token at position N" — what it means and how to fix ithttps://bytefork.tools/blog/json-parse-unexpected-token/https://bytefork.tools/blog/json-parse-unexpected-token/Decoding the most common JSON.parse error in JavaScript: how to find the byte offset, what each variant of the message means in Chrome / Firefox / Safari, and the five mistakes that trigger it.Thu, 14 May 2026 00:00:00 GMTjsondebuggingjavascriptHow to validate a Kubernetes manifest in 10 seconds without kubectlhttps://bytefork.tools/blog/validate-kubernetes-manifest-in-10-seconds/https://bytefork.tools/blog/validate-kubernetes-manifest-in-10-seconds/A fast browser-only workflow for syntax-checking a YAML manifest, converting it to JSON for tooling that does not speak YAML, and avoiding the silent type coercions that bite production deploys.Thu, 14 May 2026 00:00:00 GMTkubernetesyamldevops