How to run one specific pytest test from the command line
·2 mins
Six ways to narrow pytest to a single test - by file, class, method, parametrisation, keyword, or last-failed.
Today I Learned (TILs)
Short technical notes, quick tips, and things I’ve learned along the way. These are bite-sized learnings that don’t warrant a full blog post but are worth remembering and sharing. Sometimes it’s just a single Linux command I want to remember for next time.
2026
Commas and Dots Mean Different Things in Different Locales
·2 mins
Why 1,234.56 and 1.234,56 are the same number depending on where you are
How to diff two large JSON files with out-of-order keys
·2 mins
diff gives you noise. jq -S, dyff, and jd give you the actual semantic difference.How to convert a file from CP1250 to UTF-8 with iconv
·2 mins
One iconv command to convert files between character encodings (CP1250, ISO-8859, UTF-16) - plus the ones you’ll actually encounter.
The World Doesn't Agree on Work Weeks
·4 mins
Why scheduling a Monday meeting with your global team is harder than it sounds
Persistent Authorization in FastAPI Swagger UI
·1 min
How to keep your bearer token in Swagger UI across page refreshes
2025
How to fix 'ImagePullBackOff' without leaving kubectl
·2 mins
The four causes of ImagePullBackOff in Kubernetes and the kubectl commands that diagnose each one.
How to temporarily suspend a Kubernetes CronJob
·1 min
One
kubectl patch to stop a CronJob from firing without deleting it - and how to resume it later.How to safely undo a git push --force
·2 mins
Recover the commits you overwrote with
git push --force using the reflog - and how to never need to again.How to inspect a Docker image without running it
·2 mins
See what’s inside a Docker image - layers, env, entrypoint, files - without ever running the container.