elmicha

I think your understanding is mostly correct. But I never heard that you can get an ISP to port-forward through their CGNAT. Either you get a public IPv4 address or not.

IPv6 would work, but then only clients with IPv6 can connect. And I just read that there are still people with IPv4-only routers in 2023.

Have a look at Tailscale and Zerotier, I think they are often used to poke through CGNAT.

Warum darf's keine Nano-SIM sein? Du kannst sie bei Deinem Anbieter wechseln lassen, oder Du kannst sie auch selber zuschneiden.

From your Linux systems you could run grub-set-default or grub-reboot. I don't know if there's a version for Windows.

I use FreshRSS and FeedMe on the phone.

Als ich noch Hemden getragen habe, hatte ich bügelfreie, und die mussten so gut wie nie gebügelt werden.

Was spricht gegen Firefox Klar?

Mein letzter Stand war, das iMessage an Nicht-iPhones nur SMS versenden/empfangen kann (nicht mal RCS).

In Germany we have a trial run of food delivery. A drone will bring a package with up to 4.5 kg to a "remote" village, then some students on e-bikes will bring it to the houses. Why they are using drones instead of one lorry a day is unknown.

Don't put it in /usr/bin, that's where your package manager puts executables, not you. Other than that, do what you want. /usr/local/bin is good, or if it's only for your user ~/bin, ~/local/bin or ~/.local/bin - I don't care. Also just let your users decide where they want to put the script.

Wow, da habe ich offenbar unter einem Stein gelebt: seit 2001 gibt es schon so ähnliche Chipless RFID tags.

I don't know how it works with your or OP's router, but my router has a firewall for IPv6, too. There's no NAT for IPv6, so if I open a port I have to use the server's IP address, and that's also the IP address that I have to use from the outside.

The underscore is used to underline text in Markdown. If you want to display a real underscore like this: _, you have to escape it with a backslash. Some clients apparently interpret this rule even in plain links, and some don't. If we use real Markdown links this should not happen.