Badabinski

Sounds like you may want to use a union filesystem like overlayfs. I’m not sure if the specific behavior of overlayfs will work for you, but it’s worth investigating.

Thank you for putting your use-case in your post, since otherwise I think this might be an XY problem.

EDIT: There’s also mergefs and unionfs. I don’t know what the features and drawbacks are for these three union filesystems. mergefs seems like it might be the most configurable, but it’s also FUSE. unionfs and overlayfs are both in-kernel, so they’ll perform better (which may not matter for your use-case). overlayfs is the one I’m most familiar with of those two, since it’s used by most container runtimes.

I hate him I hate him I hate him I hate him I hate him

Fucking lawnmower piece of shit. Do not fall into the trap of anthropomorphizing Larry Ellison.

I remember reading this article on the subject and finding it interesting: https://archive.ph/8xyWx

My terrible summary of that article is that it’s really hard to turn cell goop into something that is recognizably hamburger. There’s a shitload of structure to meat so you have to make the cells do their “turn into this part of a cow” thing. That’s been really difficult to scale up. One shortcut you can take is to use actual animal meat as a starter, but then you’re no longer making vegetarian meat, and I seem to recall there being some other issue with that.

I really want lab grown meat to work, but I’m losing hope.

Oof, I didn’t know that about firejail. I’d heard of it, but I’d never used it. Like, c’mon folks! If you need privilege escalation, either require launching as root (if appropriate), or delegate the responsibility to a small, well-audited tool designed explicitly for the purpose and spawn a new privileged pid. Don’t use SUID. You will fuck it up. If you reach the point where setuid is your only option, then you’ve hopefully learned enough to rearchitect to not need it, or to give up, or use it if you’re, say, someone who maintains a libc or something.

EDIT: this is overly dramatic, but also it’s not. I personally feel like using SUID is kinda like rolling your own crypto in terms of required competence.

I feel like I saw people saying this back in 2007 (with different terminology, ofc). Kids just like in-jokes and being ironic. It’s not ruining the Internet, big business is what’s ruining the Internet.