[off-topic] Where does umask get set at system startup? Mine seems to have changed to 0002 recently

[Ralf Mardorf]

Ok, barring embedded systems and jailed or somehow locked systems
(apart from "regular restricted" MacOS and Windows), smart phones,
Rasperries, cars, washing machines, routers, tablets (OTOH my iPadOS
iPadPro is a powerful, professional computer), hobby usage VMs,
satellite receivers, live media (USB, DVD...) etc., but counting
servers, desktop PCs, including machines using "normal" BSD jails in a
"normal way", "normal containers", professional used VMs, laptops,
notebooks. Is it possible to estimate market shares of single-user and
multi-user machines? I haven't got the slightest idea. Does my
single-user multi-boot machine with several user accounts per install
count as a multi-user machine? Even if I would start several different
user sessions, I only would use one session at a time.