I mentioned systemd-logind. Its manual page systemd-logind(8) states¹: “See sd-login(3)² for information about the basic concepts of logind such as users, sess

I mentioned systemd-logind. Its manual page systemd-logind(8) states¹: “See sd-login(3)² for information about the basic concepts of logind such as users, sessions and seats.”. 1. https://manpages.debian.org/stable/systemd/systemd-logind.8.en.html https://manpages.debian.org/stable/systemd/systemd-logind.8.... 2. https://manpages.debian.org/bullseye/libsystemd-dev/sd-login.3.en.html https://manpages.debian.org/bullseye/libsystemd-dev/sd-login...