Provided by: uuid-runtime_1.41.3-1ubuntu1_i386
uuidgen - command-line utility to create a new UUID value
uuidgen [ -r | -t ]
The uuidgen program creates (and prints) a new universally unique
identifier (UUID) using the libuuid(3) library. The new UUID can
reasonably be considered unique among all UUIDs created on the local
system, and among UUIDs created on other systems in the past and in the
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
-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
OSF DCE 1.1
uuidgen was written by Andreas Dilger for libuuid.
uuidgen is part of libuuid from the e2fsprogs package and is available