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notes

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Tony Garnock-Jones 2022-04-25 16:59:08 +02:00
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notes/systemd-functions.md
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@ -66,6 +66,14 @@ title: 'What does systemd do?'
- pstore: ?
- random-seed: load/save random seed at boot/shutdown
- resolve: a full DNS resolver
- or? `systemd-resolved` is an interesting take on non-daemonless DNS service for processes
on the machine: in particular it is able to do split DNS right, with ~routes advertising
their ability to resolve specific subsets of DNS space. Apparently DBus can be used to
get rich queries and control things, and there's a listener on a localhost address
(127.0.0.53?) for unmodified processes to use. Tailscale makes use of the split DNS to
get things like resolution of the private names. Presumably you can say "hey give these
names to me and *only* me" as well as "I am able to resolve these names, but if others
also claim to be able to, go ahead and try things in parallel"? Unclear.
- rfkill: radio power control
- run: "Run the specified command in a transient scope or service"
- shared