After reading the link you posted and the included https://github.com/systemd/systemd/issues/6237, which is a case-in-point where systemd runs unit's process as root if username starts with digit, some systemd uber-programmer (poetering whatever) makes the wild claim that such usernames are invalid and blames it on bugs elsewhere outside systemd:

"0day" is not a valid username. I wonder which tool permitted you to c
+reate it in the first place

[download]
(https://github.com/systemd/systemd/issues/6237#issuecomment-311900864)

this is what is wrong with systemd and similars (like NetworkManager IMO): the lethal combination of ignorance+audacity. Little god syndrome.

In reply to Re^4: How not to implement updaters by bliako
in thread How not to implement updaters by afoken

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