Путеводитель по Руководству Linux

  User  |  Syst  |  Libr  |  Device  |  Files  |  Other  |  Admin  |  Head  |



   uuidd    ( 8 )

демон генерации UUID (UUID generation daemon)

Имя (Name)

uuidd - UUID generation daemon


Синопсис (Synopsis)

uuidd [options]


Описание (Description)

The uuidd daemon is used by the UUID library to generate universally unique identifiers (UUIDs), especially time-based UUIDs, in a secure and guaranteed-unique fashion, even in the face of large numbers of threads running on different CPUs trying to grab UUIDs.


Параметры (Options)

-d, --debug
           Run uuidd in debugging mode. This prevents uuidd from running
           as a daemon.

-F, --no-fork Do not daemonize using a double-fork.

-k, --kill If currently a uuidd daemon is running, kill it.

-n, --uuids number When issuing a test request to a running uuidd, request a bulk response of number UUIDs.

-P, --no-pid Do not create a pid file.

-p, --pid path Specify the pathname where the pid file should be written. By default, the pid file is written to {runstatedir}/uuidd/uuidd.pid.

-q, --quiet Suppress some failure messages.

-r, --random Test uuidd by trying to connect to a running uuidd daemon and request it to return a random-based UUID.

-S, --socket-activation Do not create a socket but instead expect it to be provided by the calling process. This implies --no-fork and --no-pid. This option is intended to be used only with systemd(1). It needs to be enabled with a configure option.

-s, --socket path Make uuidd use this pathname for the unix-domain socket. By default, the pathname used is {runstatedir}/uuidd/request. This option is primarily for debugging purposes, since the pathname is hard-coded in the libuuid library.

-T, --timeout number Make uuidd exit after number seconds of inactivity.

-t, --time Test uuidd by trying to connect to a running uuidd daemon and request it to return a time-based UUID.

-V, --version Output version information and exit.

-h, --help Display help screen and exit.


Примеры (Examples)

Start up a daemon, print 42 random keys, and then stop the
       daemon:

uuidd -p /tmp/uuidd.pid -s /tmp/uuidd.socket uuidd -d -r -n 42 -s /tmp/uuidd.socket uuidd -d -k -s /tmp/uuidd.socket