xref: /illumos-gate/usr/src/man/man1/uuidgen.1 (revision b31ca922)
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11.\" Copyright 2015 Nexenta Systems, Inc.
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13.Dd Sep 13, 2015
14.Dt UUIDGEN 1
15.Os
16.Sh NAME
17.Nm uuidgen
18.Nd command-line utility to generate UUID's
19.Sh SYNOPSIS
20.Nm uuidgen [-r | -t] [-o filename]
21.Sh DESCRIPTION
22The
23.Nm
24command generates and prints a Universally Unique
25IDentifier (UUID). By default
26.Nm
27creates a new UUID based on high-quality randomness from
28arc4random(3C) (DCE version 4). If the \fB-t\fR option is
29provided then a time-based (DCE version 1) UUID will be
30generated.
31.Sh OPTIONS
32.Bl -tag -width indent
33.It Fl r
34Generate a UUID using
35.Nm uuid_generate_random()
36instead of
37.Nm uuid_generate() .
38This derives the new UUID from random data.
39.It Fl t
40Generate a UUID using
41.Nm uuid_generate_time()
42instead of
43.Nm uuid_generate() .
44This uses the current time and either the
45Ethernet address (if available) or system node ID.
46.It Fl o
47Redirect output to
48.Ar filename
49instead of stdout.
50.El
51.Sh EXIT STATUS
52.Bl -tag -width Ds
53.It Dv 0
54Successful completion.
55.It Dv >0
56Failure.
57.El
58.Sh INTERFACE STABILITY
59.Sy Uncommitted .
60.Sh SEE ALSO
61.Xr uuid_generate 3uuid ,
62.Xr uuid_generate_random 3uuid ,
63.Xr uuid_generate_time 3uuid
64