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Man Pages


Manual Reference Pages  -  UUIDD (8)

NAME

uuidd - UUID generation daemon

CONTENTS

Synopsis
Description
Options
Author
Availability

SYNOPSIS

uuidd [ -d ] [ -p pidfile ] [ -s socketpath ] [ -T timeout ]

uuidd [ -r | -t ] [ -n number ] [ -s socketpath ]

uuidd -k

DESCRIPTION

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

OPTIONS

-d Run uuidd in debugging mode. This prevents uuidd from running as a daemon.
-k If a currently uuidd daemon is running, kill it.
-n number
  When issuing a test request to a running uuidd, request a bulk response of number UUID’s.
-p pidfile
  Specify the pathname where the pid file should be written. By default, the pid file is written to /var/lib/libuuid/uuidd.pid.
-s socketpath
  Specify the pathname used for the unix-domain socket used by uuidd. By default, the pathname used is /var/lib/libuuid/request. This is primarily for debugging purposes, since the pathname is hard-coded in the libuuid library.
-r Test uuidd by trying to connect to a running uuidd daemon and request it to return a random-based UUID.
-t Test uuidd by trying to connect to a running uuidd daemon and request it to return a time-based UUID.
-T timeout
  Specify a timeout for uuidd. If specified, then uuidd will exit after timeout seconds of inactivity.

AUTHOR

The uuidd daemon was written by Theodore Ts’o <tytso@mit.edu>.

AVAILABILITY

uuidd is part of libuuid from the e2fsprogs package and is available from http://e2fsprogs.sourceforge.net.

SEE ALSO

libuuid(3), uuidgen(1)
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E2fsprogs version 1.42.13 UUIDD (8) May 2015

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