UUIDGEN(1) User Commands UUIDGEN(1)

NAME
       uuidgen - create a new UUID value

SYNOPSIS
       uuidgen [options]

DESCRIPTION
       The uuidgen program creates (and prints) a new universally unique iden‐
       tifier (UUID) using the libuuid(3) library.  The new UUID  can  reason‐
       ably  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 UUIDs which  uuidgen  can  generate:  time-based
       UUIDs  and random-based UUIDs.  By default uuidgen will generate a ran‐
       dom-based UUID if a high-quality random number  generator  is  present.
       Otherwise,  it  will choose 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, random
              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, time
              Generate a time-based UUID.  This method creates a UUID based on
              the system clock plus the system's ethernet hardware address, if
              present.

       -h, help
              Display help text and exit.

       -V, version
              Display version information and exit.

CONFORMING TO
       OSF DCE 1.1

AUTHOR
       uuidgen was written by Andreas Dilger for libuuid.

SEE ALSO
       libuuid(3)

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



util-linux                         June 2011                        UUIDGEN(1)