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uuidgen.1.gz

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 identi‐
       fier (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  uuid‐
       gen  will generate a random-based UUID if a high-quality ran‐
       dom 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
       -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  eth‐
              ernet hardware address, if present.

RETURN VALUE
       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
       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 1.39        May 2006                    UUIDGEN(1)
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