Sector Notes Short, practical notes on Linux, shell, networking, git and everyday development. https://sectorpfoffi.space 2026-06-21T00:00:00.000Z Git worktrees in practice 2026-06-21T00:00:00.000Z https://sectorpfoffi.space/notes/2026-06-git-worktrees/ Stop stashing to switch branches. Git worktrees give each branch its own directory off a single repo. Bash strict mode, explained 2026-06-03T00:00:00.000Z https://sectorpfoffi.space/notes/2026-06-bash-strict-mode/ What set -euo pipefail actually does, line by line, plus the IFS trick and the gotchas that bite everyone. A minimal nginx reverse proxy 2026-05-09T00:00:00.000Z https://sectorpfoffi.space/notes/2026-05-nginx-reverse-proxy/ The smallest nginx reverse proxy that terminates TLS, forwards to a local app, and keeps the headers everyone forgets. systemd timers instead of cron 2026-04-12T00:00:00.000Z https://sectorpfoffi.space/notes/2026-04-systemd-timers/ Replace cron with systemd timers: logs, status, missed-run catch-up, and the smallest setup that actually works. A small jq cookbook 2026-03-15T00:00:00.000Z https://sectorpfoffi.space/notes/2026-03-jq-cookbook/ The handful of jq recipes that cover most real work: filtering, reshaping, arrays, and turning JSON into CSV. Fetch timeouts in Node with AbortController 2026-02-08T00:00:00.000Z https://sectorpfoffi.space/notes/2026-02-node-fetch-timeout/ Node's global fetch has no useful default timeout. Add one with AbortSignal.timeout and combine it with cancellation.