craig_s_bell

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Jul 8

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Timers also let you logical-AND elements within one simple declaration. Combine that with a random delay, and you can easily define a trigger such as "the 2nd Saturday of the month, anytime between midnight and 6AM":

  OnCalendar=Sat *-*-08..14 00:00:00
  RandomizedDelaySec=360min

You can tell a timer whether to re-use that same randomly-selected time during subsequent runs (FixedRandomDelay), or to re-roll the time for every trigger. They can also persist their last-run history across reboots, and trigger if they missed their previous time-slot.

The improved logic vs. cron is one of the features which makes my life easier, and so I started using systemd more often. IMHO some of the newer additions aren't quite as solid; but the basic units have proven to be very handy. Another example: The 'path' unit, which can trigger whenever a defined file is updated.

https://wiki.archlinux.org/title/Systemd/Timers

Comment · 6 months ago

The accompanying artwork is really something: https://images.newrepublic.com/580ae26a8830e8fa8f2f054ca3232...

Comment · 10 months ago

> MCD uses location tracking to only submit the mobile order once you are in range of the store

Interesting. Can they be certain that the device from which one places the order, is also taken along for the ride? Some people might order from a separate phone or tablet, which stays at home. Perhaps all of this customer's devices have the McD's app; and any one of them may trigger the order, by approaching the store.

Comment · 1 year ago

https://archive.is/bNPHf

Comment · 1 year ago

Even better: Make the entire structure out of Flex Seal.

Comment · 2 years ago

For some distributions, CIS benchmarks (also used by various other security tools) now include guidelines for SELinux.

I couldn't find it in the Debian spec (probably because it uses AppArmor), but the RHEL benchmark has these.

Currently, server level 1 only requires permissive mode:

https://www.tenable.com/audits/items/CIS_Red_Hat_Enterprise_...

  CIS Red Hat Enterprise Linux 9 v2.0.0 L1 Server — 1.3.1.4 Ensure the SELinux mode is not disabled

... While server level 2 specifies enforcing mode:

https://www.tenable.com/audits/items/CIS_Red_Hat_Enterprise_...

  CIS Red Hat Enterprise Linux 9 v2.0.0 L2 Server — 1.3.1.5 Ensure the SELinux mode is enforcing

Comment · 2 years ago

I gave up NPR a few years ago, after four decades of frequent listening. It has become more difficult to recognize the attributes which made it so useful and insightful, for so long. Once in a while, they run something which reinforces my opinion that they've strayed into the weeds. A recent example: https://www.npr.org/transcripts/1197955833

  LUSE: I talked to other professors in preparation for this conversation, and something that came up was, like, it's seen by many as a very extreme form of nonviolent direct action.

  WOODLY: Yes. I mean, it is the most extreme form of nonviolent direct action because self-immolation is not meant to hurt others. It's not meant to destroy property. It's really meant to use one's own life to make a statement. It's also on a spectrum - right? - like, you know, sort of on a spectrum from, for example, hunger strike. Some people do things like nail parts of their bodies to buildings. And then sort of self-immolation is, like, on that spectrum of the most extreme kinds of nonviolent direct action.

Comment · 2 years ago

There were a total of three fatalities resulting from Asiana 214. Two passengers died onboard, as a direct consequence of the crash.

As for the third, it was later speculated that they could possibly have already died before encountering airport fire and rescue vehicles. This is still controversial; it is also possible that the original sequence of events was correct.

The primary cause of the crash was a profound lack of airmanship by the flight-deck crew. There was also some mode confusion with the autopilot and autothrottle; however they should have overcome this using fundamental aviation skills. Nobody was minding the actual throttle state.

Either way, it is worth noting the other two fatalities. Thank you.

Comment · 2 years ago

Too much of a good thing could be considered harmful:

Destroying the Earth by Using Tidal Energy

Jerry Z. Liu

https://cs.stanford.edu/people/zjl/pdf/tide0.pdf

Comment · 3 years ago

UI implementers have long advocated for the eradication of Rub icons: https://imgur.com/nUNHlDs

Comment · 3 years ago

If you want to learn more about life on St. Helena, I recommend a blog called What The Saints Did Next: https://whatthesaintsdidnext.com/

My favorite posts are the trip reports... They have hiked to every corner of the island. Great photos, and lots of history.

Comment · 3 years ago

This is very well-written. The author has more articles at this site, which are also worth reading: https://www.nutsvolts.com/magazine/contributor/michael_banks

I thought I knew a bit about WWII disinformation programs; but I learned quite a bit from this piece: https://www.nutsvolts.com/magazine/article/britains-raiding-...

Comment · 3 years ago

Some people (such as my Better Half) have small hands, and greatly prefer the Mini form-factor. She finds it annoying to use the larger models.

I hope that Apple hears from many such customers; and re-introduces a smaller, current-generation phone.

Comment · 3 years ago

No need to worry; Hydrogen's exceptional permeability means the gas will diffuse through the jerry can, into the atmosphere; thus lowering its internal pressure.

We can make vessels which will contain increasingly high pressures; however their permeability is higher, vs. older materials. This is a central problem of hydrogen as a primary fuel... Better to burn it (or convert it into methane) where and when it is produced.