after boot, prohibit user logins at shutdown systemd-user-sessions.service (8) — Permit user logins after boot, prohibitsystemd1 (5), systemd-soft-reboot.service (8) /run/nologin shutdown (8), systemd-user-sessions.service (8) /run/pcrlock.d/ systemd-pcrlock (8) /run/pcrlock.d/*.pcrlock ... systemd-…