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 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
    -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 system's ethernet 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)