I'm back with another #FreeBSD question, specifically about `periodic`. I'd like to use `periodic daily` to occasionally scrub my ZFS pools by setting `daily_scrub_zfs_enable` to `"YES"` in `/etc/periodic.conf`. This works great on a server, because it's always on, but not so great on my laptop, because the cron is scheduled at night. I could change the time, but then it'll only run if my laptop is on at the right time.

Is there a way to schedule this so the `periodic` crons are run after booting, in case there are "missed" runs? What is the recommended approach here, use e.g. Xfce's autostart applications for this?

Edit: solved! The answer is anacron

Thanks for reading :)

#cron #periodic #zfs

Can I Lick It?

At some point in human history, someone licked every element in #periodic table

Not the same person, obviously—that would require an impressive tolerance for radiation & poor decision-making

But collectively, across centuries of #scientific #inquiry, accidental exposure, & sheer #human stubbornness, tongues touched all 118 known elements

Some of those encounters went fine. Others ended careers, relationships & vital organ function.

https://fazzler.com/can-i-lick-it-a-periodic-table-for-the-curious-and-the-doomed/

#science #humour

On #periodic #tilings with #regular #polygons

https://chequesoto.info/tiling/

I'm wondering: #physics makes a lot of use of #periodic functions, in particular it is very useful to solve space-dependent equations in representative volumes with #periodicBoundaryConditions.

However I've only seen it done with periodicity along orthogonal directions, aligned with a Cartesian frame.

Do you know of work, e.g. #PDE resolution, in nonrectangular #periodicDomains? E.g., in a #tiled hexagon? (but with a sufficiently generic setting, not exploiting regular hexagon symmetries) Even better if the periodicity parameters themselves are among the unknowns.

(Maybe I'm completely missing something obvious there, I'm in my first steps towards defining what I want - any random thought on the topic highly welcome!)

#tiling people?