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Technical notes.
Linux, infrastructure, automation, observability, and production engineering. 4 posts so far, newest first.
20264 posts
- 8 min
FreeBSD, NetBSD, OpenBSD and DragonFlyBSD: what actually differs
Same 4.4BSD skeleton, four different answers to what to optimise: kernel locking, filesystems, security models, architecture coverage, and how each project runs Linux binaries.
- 9 min
Debugging a systemd service without guessing
A repeatable path from failed unit to useful evidence using systemctl, journalctl, exit status, and the unit's real runtime context.
- 7 min
Write boring shell scripts
A few conventions that make small Bash automation safer to rerun, easier to debug, and less surprising six months later.
- 8 min
Linux load average is not CPU usage
Why a high load average can point at CPU pressure, blocked I/O, or scheduling pressure—and what to inspect next.