Ancestors

Written by Lennart Poettering on 2024-12-16 at 08:38

3️⃣4️⃣ Here's the 34th post highlighting key new features of the current v257 release of systemd. #systemd257

Back in v251 we added systemd-sysupdate too the systemd suite. It's a tool for updating block devices (such as partitions), specific files (such as sysext, confext, portable service or nspawn DDIs), or file system trees in a simple an atomic way.

So far it has been a command line tool only, that you can invoke from the shell, and that would do its thing. With v257…

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Toot

Written by Lennart Poettering on 2024-12-16 at 08:41

… the systemd-update command line tool is augmented by systemd-sysupdated daemon that makes the functionality available via D-Bus, can keep track of multiple parallel transfers and more. It gained a client-side tool updatectl to interact with this.

This of course feels a bit redundant: why have the systemd-update tool and the updatectl tool, both which do the same stuff and can be called from the command line?

The systemd-update tool is mostly useful when directly invoking it from scripts…

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Descendants

Written by Lennart Poettering on 2024-12-16 at 08:43

…and with full privileges. OTOH updatectl is more of an interactive user-facing tool, that can be invoked without privileges. Hence, depending on your usecase you might prefer one or the other, but admittedly the line between the two are a bit blurry.

systemd-sysupdated has been contributed as part of GNOME's OS STF grant, where it's essential to have user controllable updater functionality available.

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