MACHINE-ID(5) machine-id MACHINE-ID(5) NAME machine-id - "machine ID" SYNOPSIS /etc/machine-id /etc/machine-id "machine ID" "machine ID"32 12816 "machine ID" "machine ID" "machine ID""D-Bus machine ID" "machine ID" "machine ID" POSIX gethostid(3) systemd-machine-id- setup(1) "machine ID" systemd- firstboot(1) ()"machine ID" systemd.machine_id= systemd --machine-id= "machine ID" "machine ID" OSF UUID "machine ID" RFC 4122[1] (OSF v4 UUID) Microsoft GUID /etc/machine-id D-Bus /var/lib/dbus/machine-id /var/lib/dbus/machine-id /etc/machine-id systemd(1), systemd-machine-id-setup(1), gethostid(3), hostname(5), machine-info(5), os-release(5), sd-id128(3), sd_id128_get_machine(3), systemd-firstboot(1) NOTES 1. RFC 4122 https://tools.ietf.org/html/rfc4122 man http://www.jinbuguo.com man https://github.com/man-pages-zh/manpages- zh systemd 231 MACHINE-ID(5)