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uuidd

UUIDD(8)						       System Administration							  UUIDD(8)

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.

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

       -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, --pid path
	      Specify the pathname where the pid file should be written.  By default, the pid file is written to /var/uuidd/uuidd.pid.

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

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

       -S, --socket-activation
	      Do not create the socket and instead expect it to be provided by the calling process.  Implies --no-fork and --no-pid.  As  of  this
	      writing, this option is supposed to be used only with systemd.  This option must be enabled with a configure option.

       -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 path
	      Specify  the  pathname used for the unix-domain socket used by uuidd.  By default, the pathname used is /var/uuidd/request.  This is
	      primarily for debugging purposes, since the pathname is hard-coded in the libuuid library.

       -T, --timeout timeout
	      Specify a timeout for uuidd.  If specified, then uuidd will exit after timeout 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.

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 Theodore Ts'o <tytso@mit.edu>.

AVAILABILITY

       The uuidd daemon is part of the util-linux package and is available from ftp://ftp.kernel.org/pub/linux/utils/util-linux/.

SEE ALSO

       uuid(3), uuidgen(1)

util-linux							     June 2011								  UUIDD(8)