SYSTEMD-MACHINE-ID-SETUP(1) systemd-machine-id-setup (NAME) systemd-machine-id-setup - (/etc/machine-id) (SYNOPSIS) systemd-machine-id-setup (DESCRIPTION) systemd-machine-id-setup /etc/machine-id . machine-id(5) . --commit /etc/machine-id . : 1. /run/machine-id /etc/machine-id . --root= chroot . 2. D-Bus D-Bus /etc/machine-id . 3. system.machine_id /etc/machine-id . --root= chroot . 4. KVM UUID ( -uuid) UUID . UUID . --root= chroot . 5. UUID . Container Interface[1] . --root= chroot . 6. . --commit . . systemd-firstboot(1) ( ) . (OPTIONS) : --root=path . root /etc/machine-id. 212. --image=path . --root= . 249. --image-policy=policy systemd.image-policy(7) . --image= ( ) . "*" . --commit . . ( "tmpfs") /etc/machine-id bind . /etc/ . /etc/machine-id /etc/ . /etc/machine-id (race-free) . systemd- machine-id-commit.service(8) . 227. --print . 231. -h, --help . --version . (EXIT STATUS) 0 . (SEE ALSO) systemd(1), machine-id(5), systemd-machine-id-commit.service(8), dbus- uuidgen(1), systemd-firstboot(1) (NOTES) 1. Container Interface https://systemd.io/CONTAINER_INTERFACE systemd 261.2 SYSTEMD-MACHINE-ID-SETUP(1)