I hate messy Downloads folders. You know the feeling: report.pdf report(1).pdf report(2).pdf screenshot.png screenshot(1).png screenshot(2).png video_final.mp4 video_final_FINAL.mp4 notes.docx notes_copy.docx notes_copy_FINAL(1).docx Enter fullscreen mode Exit fullscreen mode At some point you just stop caring and let it rot. Cron jobs felt overkill — why poll every minute just to watch an empty folder? So I built haul . Drop a file in a watched folder, it moves it to the right place. That's it. The trick — zero CPU when idle haul uses inotify , a filesystem event API built into the Linux kernel. Instead of running a loop, it just waits for the kernel to say "hey, a file arrived" — sorts it — then exits. systemd restarts it immediately for the next file. No polling. No persistent process. Nothing running between events.…