Field Notes

The notebook

Small notes.
Useful details.

Follow a thread, find a command, or spend a few minutes understanding the part you usually skip.

6 notes

  1. 01

    Read before you restart

    Unix · A quiet service is not always a healthy service. Start with a few observations you can compare.

    2 min read
  2. 02

    A small SSH key checklist

    Networking · Check the destination, the identity, and the permissions before changing authentication settings.

    2 min read
  3. 03

    Backups you can actually restore

    Operations · The useful question is not whether a copy exists. It is whether the recovery path works.

    2 min read
  4. 04

    The quiet life of a DNS lookup

    Networking · A name, an answer, and a little patience. Follow the caches between a question and its destination.

    2 min read
  5. 05

    Make curl part of your notebook

    Web · Turn an uncertain web request into a small, repeatable observation.

    2 min read
  6. 06

    Reading Unix permissions

    Unix · Read the owner, group, and access bits before reaching for chmod.

    2 min read