UUIDGEN(1)							    UUIDGEN(1)



NAME
       uuidgen - command-line utility to create a new UUID value

SYNOPSIS
       uuidgen [ -r | -t ]

DESCRIPTION
       The  uuidgen program creates a new universally unique identifier (UUID)
       using the libuuid(3) library.  The new UUID can reasonably  be  consid
       ered  unique  among  all  UUIDs	created on the local system, and among
       UUIDs created on other systems in the past and in the future.

       There are two types of UUIDs which uuidgen  can	generate:  time-based
       UUIDs  and  random-based  UUIDs.   By default uuidgen will generate a
       random-based UUID if a high-quality random number generator is present.
       Otherwise,  it  will  chose a time-based UUID.  It is possible to force
       the generation of one of these two UUID types by using the

       A UUID of the form 1b4e28ba-2fa1-11d2-883f-b9a761bde3fb	(in  printf(3)
       format  "%08x-%04x-%04x-%04x-%012x")  is output to the standard output.
       -r or -t options.

OPTIONS
       -r     Generate a random-based UUID.  This method creates a  UUID  con
	      sisting  mostly  of random bits.	It requires that the operating
	      system have a high quality  random  number  generator,  such  as
	      /dev/random.

       -t     Generate a time-based UUID.  This method creates a UUID based on
	      the system clock plus the systems ethernet hardware address, if
	      present.

CONFORMING TO
       OSF DCE 1.1

AUTHOR
       uuidgen was written by Andreas Dilger for libuuid.

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

SEE ALSO
       libuuid(3)



E2fsprogs version 1.40-WIP	 November 2006			    UUIDGEN(1)