NAME    [Toc]    [Back]

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

SYNOPSIS    [Toc]    [Back]

       uuidgen [ -r | -t ]

DESCRIPTION    [Toc]    [Back]

       The  uuidgen program creates a new universally unique identifier (UUID)
       using the libuuid(3) library.  The new UUID can reasonably  be  considered
  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 UUID's which uuidgen  can  generate:  time-based
       UUID's  and  random-based  UUID's.   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  -r	or  -t
       options.

OPTIONS    [Toc]    [Back]

       -r     Generate	a  random-based UUID.  This method creates a UUID consisting
 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 system's ethernet hardware address, if
	      present.

RETURN VALUE    [Toc]    [Back]

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

CONFORMING TO    [Toc]    [Back]

       OSF DCE 1.1

AUTHOR    [Toc]    [Back]

       uuidgen was written by Andreas Dilger for libuuid.

AVAILABILITY    [Toc]    [Back]

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

SEE ALSO    [Toc]    [Back]

       libuuid(3)



E2fsprogs version 1.27		  March 2002			    UUIDGEN(1)