#periodic — Public Fediverse posts

Last Week on My Mac: Macs that go bump in the night

https://fed.brid.gy/r/https://eclecticlight.co/2026/08/23/last-week-on-my-mac-macs-that-go-bump-in-the-night/

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

@infobeautiful
The #older amongst us remember the figures you the when you feed different #periodic signals in the x- and y-deflection of an #Oscilloscope

Often seen in these #pictures from 1966

https://www.imdb.com/de/title/tt0061289/

Even in outer space, no one is safe from Platinum and his deadly sound attacks! #originalcharacter #robot #armor #metal #oc #periodic #periodictable #platinum #scifi #shiny #soldier #sound #soundwave #soundwaves #technology #warrior #white #elementeon

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?

The periodic table for spatial analysis, where each element of the table contains a set of explained spatial analysis tools, grouped by color and vector on the left and raster on the right #periodic

https://gisgeography.com/spatial-analysis-periodic-table/

When I was studying #DynamicLoading of a #Structure, at least for the case of small deflections and a single-degree-of-freedom, we covered both #Periodic and #ImpulsiveLoads. The former take place over an extended period and so damping is important, while for the latter, if they are short-lived, then damping can be neglected.
(Continues...)

#MyWork #CCBYSA #Mathematics #Physics #Engineering #Dynamics

Gerade sind die #periodic #snapshot #task|s auf #truenas durchgelaufen. Die #replication tasks haben alle Daten direkt auf eine zweite Instanz #freenas #nas rübergeschoben. Kurz danach hat der #proxmox alle #lxc #container sowie die virtuellen Maschinen #kvm auf den proxmox #backup #server #pbs drauf gepackt.
#DataProtection

#opensource

Nein, sorry, da kann man nicht zugucken, das vollzieht sich alles hinter einer #pfsense #firewall

Gut, damit kann die neue Woche beginnen...

Kalenderfans!

Jeden Monat haben wir bekanntlich einen 13. des Monats. Aber wie viele Monats-Dreizehnte sind Freitage?

Bitte gerne boosten.

#kalender #mathe #periodic

Imagine a circular wheel rolling, without skidding, on a flat, horizontal surface. The #locus of any given point on its #circumference is called a #cycloid. It is a #periodic #curve with #period over the #circle's circumference and has #cusps whenever the point is in contact with the surface (the two sides of the curve are tangentially vertical at that point).

#Mathematics #Geometry #Maths #AppliedMathematics #Mechanics #Kinematics #Dynamics #Physics #MyWork #CCBYSA #WxMaxima

@compoundchem happy birthday, very interesting. Let me share you one #boardgame about #Chemistry produced by #science oriented designers , the rulebook always comes with a dedicated explanatory addendum and can be used at #school . They have covered several topics already . Happy 2024.#Periodic
https://www.kickstarter.com/projects/geniusgames/periodic-a-game-of-the-elements

#genuary16 - Draw 10000 of Something

Here's 10000 circles, whose position, diameter, and color are all defined by parametric equations.

#genuary #parametric #mathart #tenthousand #periodic #circles

In a hotel room and this is the wall #design. It has to be #periodic, but what's an #algorithm to check?

I'll be at work all day. I hope to have an answer on my desk (pseudocode or #python, please) when I get back. #computerscience #computervision

Philip Ball on the visual ordering of all the elements known to humankind—and how we might order them differently https://pioneerworks.org/broadcast/picture-this-periodic-table #periodic #table #viz

#ArtAdventCalendar Day 17

Almost periodic, but not quite.

#fractal #fractalart #marching #periodic

OMG This is cool! #linux #distribution #periodic #table
https://distrowatch.com/dwres-mobile.php?resource=family-tree

down the rabbit hole: the internet database of periodic tables
https://www.meta-synthesis.com/webbook/35_pt/pt_database.php?PT_id=964
not clear about the rights...
#alternative #chemistry #periodic #table