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uuidgen

UUIDGEN(1)						      General Commands Manual							UUIDGEN(1)

NAME

       uuidgen - command-line utility to create a new UUID value

SYNOPSIS

       uuidgen [-r|-t]

DESCRIPTION

       The uuidgen program creates (and prints) a new universally unique identifier (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 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 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 available from ftp://ftp.kernel.org/pub/linux/utils/util-linux-ng/.

SEE ALSO

       libuuid(3)

Linux								     May 2009								UUIDGEN(1)