Writing

Notes on what I'm building and thinking about.

• How to Read Linux man Pages

  May 29, 2026

  Why manual sections matter and how to ask man for the right thing.

• LUKS, Key Slots, and a Broken Keyboard

  April 21, 2026

  How LUKS lets you add another passphrase without re-encrypting the disk.

• How SHA-256 Hashes Any Input Into 256 Bits

  March 18, 2026

  How SHA-256 turns arbitrary input into a fixed 256-bit fingerprint.

• What Really Happens When Linux Runs Out of Memory?

  March 6, 2026

  A practical walkthrough of overcommit, reclaim, compaction, and the OOM killer.

• Containers Are Just Linux Processes

  February 19, 2026

  How namespaces, cgroups, capabilities, seccomp, and LSM profiles isolate containers.

• The Linux task_struct

  February 11, 2026

  How Linux represents processes and threads inside the kernel.

• Blockchain Security Is Simply Math

  January 15, 2026

  Why private-key security rests on an unimaginably large keyspace.