| //po4a: entry man manual |
| //// |
| Copyright 2007 by Theodore Ts'o. All Rights Reserved. |
| This file may be copied under the terms of the GNU Public License. |
| //// |
| = uuidd(8) |
| :doctype: manpage |
| :man manual: System Administration |
| :man source: util-linux {release-version} |
| :page-layout: base |
| :command: uuidd |
| |
| == NAME |
| |
| uuidd - UUID generation daemon |
| |
| == SYNOPSIS |
| |
| *uuidd* [options] |
| |
| == 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. |
| |
| == 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_. |
| // TRANSLATORS: Don't translate _{runstatedir}_. |
| |
| *-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. |
| // TRANSLATORS: Don't translate _{runstatedir}_. |
| |
| *-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. |
| |
| == EXAMPLE |
| |
| 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 |
| .... |
| |
| == AUTHOR |
| |
| The *uuidd* daemon was written by mailto:tytso@mit.edu[Theodore Ts'o]. |
| |
| == SEE ALSO |
| |
| *uuid*(3), |
| *uuidgen*(1) |
| |
| include::man-common/bugreports.adoc[] |
| |
| include::man-common/footer.adoc[] |
| |
| ifdef::translation[] |
| include::man-common/translation.adoc[] |
| endif::[] |
