SYSTEMD-SYSUSERS(8) systemd-sysusers SYSTEMD-SYSUSERS(8) systemd-sysusers, systemd-sysusers.service - systemd-sysusers [...] [_...] systemd-sysusers.service systemd-sysusers sysusers.d(5). sysusers.d(5). --replace=PATH PATH. . "-" . ( ) . . : --root= . root . 215. --image=image . . --root= . GPT UAPI.2 [1]. systemd-nspawn(1) . 247. --image-policy= systemd.image-policy(7). --image= . "*" . --replace= . sysusers.d(5) PATH . . 1. RPM radvd echo 'u radvd - "radvd daemon"' | \ systemd-sysusers --replace=/usr/lib/sysusers.d/radvd.conf - radvd /usr/lib/sysusers.d/radvd.conf . /etc/sysusers.d/radvd.conf /etc/sysusers.d/00-overrides.conf. "radvd" . 238. --dry-run . 250. --inline . 238. --cat-config . . --tldr . "" . . --no-pager (pager). -h --help . --version . systemd-sysusers ImportCredential=/LoadCredential=/SetCredential= ( systemd.exec(5) ). : passwd.hashed-password.user UNIX . "root" . . /etc/ . 249. passwd.plaintext-password.user "passwd.hashed-password.user" . . . 249. passwd.shell.user . 249. sysusers.extra . sysusers.d/. . 252. systemd-sysusers.service "passwd.hashed-password.root" "passwd.plaintext-password.root" "passwd.shell.root" "sysusers.extra" . /etc/ "systemd" : # systemd-nspawn --image=... --set-credential=passwd.hashed-password.root:'$y$j9T$yAuRJu1o5HioZAGDYPU5d.$F64ni6J2y2nNQve90M/p0ZP0ECP/qqzipNyaY9fjGpC' ... . mkpasswd(1) UNIX . 0 . systemd(1), sysusers.d(5), UID GID systemd[2], systemd.exec(5), mkpasswd(1) 1. UAPI.2 https://uapi-group.org/specifications/specs/discoverable_partitions_specification 2. UIDs GIDs systemd https://systemd.io/UIDS-GIDS 3 . . : . systemd 260.2 SYSTEMD-SYSUSERS(8)