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UUIDGEN(1)                  General Commands Manual                 UUIDGEN(1)

     uuidgen -- generate universally unique identifiers

     uuidgen [-1s] [-n count] [-o filename]

     The uuidgen utility by default generates a single universally unique
     identifier (UUID), also known as a globally unique identifier (GUID).  By
     default, uuidgen generates a single UUID and outputs it in the standard
     string representation to stdout.  The following options can be used to
     change the behavior of uuidgen:

           -1             This option only has effect if multiple identifiers
                          are to be generated and instructs uuidgen to not
                          generate them in batch, but one at a time.

           -n count       This option controls the number of identifiers
                          generated.  By default, multiple identifiers are
                          generated in batch.

           -o filename    Redirect output to filename instead of stdout.

           -s             Output UUIDs as initialized C structures, rather
                          than in the standard string format.

     Batched generation yields a dense set of identifiers in such a way that
     there is no identifier that is larger than the smallest identifier in the
     set and smaller than the largest identifier in the set and that is not
     already in the set.

     When generating the identifiers one at a time, the identifiers will be
     close to each other, but operating system latency and processing time
     will be reflected in the distance between two successive identifiers.

     The uuidgen utility exits 0 on success, and >0 if an error occurs.

     uuidgen(2), uuid(3)

     The uuidgen command first appeared in NetBSD 3.0.

NetBSD 7.1.2                  September 13, 2004                  NetBSD 7.1.2