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    Command:

    uuidgen

    
    
    

    SYNOPSIS

           uuidgen [-r|-t]
    
    
    

    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 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.
    
    
    

    CONFORMING TO

           OSF DCE 1.1
    
    
    

    AUTHOR

           uuidgen was written by Andreas Dilger for libuuid.
    
    
    

    AVAILABILITY

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

    SEE ALSO

           libuuid(3)
    
    
    

    Linux May 2009 UUIDGEN(1)

    
    
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