I’m a programmer and amateur radio operator.

  • 6 Posts
  • 36 Comments
Joined 1 year ago
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Cake day: June 6th, 2023

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  • If you use btrfs snapshots and systemd-boot instead of grub, then be carefull restoring updates from before a kernel update.

    If I understand it correctly, with systemd-boot the kernel lives in the EFI partition, while the kernel modules live in the main (btrfs) partition. If you restore a snapshot with a different kernel version, it doesn’t restore the kernel itself, but the kernel modules have different filenames, which stops the system from being able to boot.

    At least that is my understanding of the problem, from having to debug it twice (just start a live-boot system and use Timeshift to restore the system to after the update again). The next time I install Linux, I think I’ll go with grub instead of systemd-boot.

    That being said, I really like btrfs snapshots as a sort of “almost backup” (still do regular backups on an external drive). They are quick and easy, and most packet managers can be setup to automatically make a snapshot before installing/updating stuff.






  • Can I take one end of a cable with me?

    What’s the max power I can get from the sockets?

    Where does the eject button dump people and can it be set to dump things other than people as well?

    Does time continue inside the pocket dimension if no one is inside?

    What’s the internal temperature/humidity? Is it regulated?

    Can I choose what I take with me, or is it just everything im wearing/carrying?


    Questions aside, I would fill it with all sorts of stuff that I might need at some point, but leave enough space for a bed and a desk.





  • Nope, at least afaik. Prototyping and building cars by hand (without a whole factory set up to build it) is hard. Not to mention extremely expensive. And you have to build multiple (identical) copies of the prototype to get it street legal, because of crash testing. And you have to be able to guarantee that what people build with your kit remains identical to your prototype. Or everyone assembling such a kit would have to build multiple copies of the car and go through the certification process individually.

    And of course there are very few people that would want to assemble their own car, so you wouldn’t be able to make a business out of it.



  • I’d like to elaborate a bit on why DNS can be used to track you.

    Nearly all web traffic is encrypted (https), you can check by looking at the padlock next to the URL in your browser. But DNS requests aren’t encrypted by default. This means anyone, most likely your ISP our the admin of your home network, can see what domains you’re accessing. That means just google.com, lemmy.world, etc. and not lemmy.world/post/… This isn’t a huge amount of info, but it does tell anyone who’s looking approximately what you’re doing (googling something, looking at lemmy, etc.).

    To fix that there are a few different ways to encrypt DNS requests, the most common of which (afaik) is DNS over HTTPS, which will encrypt DNS requests like any other web request your browser makes. I don’t know why this hasn’t been made the default yet. Firefox has a setting for DNS over HTTPS, it calls it secure DNS.