1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
|
.\" Copyright 1999 Andreas Dilger (adilger@enel.ucalgary.ca)
.\"
.\" %Begin-Header%
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\" notice, and the entire permission notice in its entirety,
.\" including the disclaimer of warranties.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\" notice, this list of conditions and the following disclaimer in the
.\" documentation and/or other materials provided with the distribution.
.\" 3. The name of the author may not be used to endorse or promote
.\" products derived from this software without specific prior
.\" written permission.
.\"
.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
.\" WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ALL OF
.\" WHICH ARE HEREBY DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE
.\" LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
.\" OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
.\" BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
.\" LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
.\" USE OF THIS SOFTWARE, EVEN IF NOT ADVISED OF THE POSSIBILITY OF SUCH
.\" DAMAGE.
.\" %End-Header%
.\"
.\" Created Wed Mar 10 17:42:12 1999, Andreas Dilger
.TH UUID 3 "May 2009" "util-linux" "Libuuid API"
.SH NAME
uuid \- DCE compatible Universally Unique Identifier library
.SH SYNOPSIS
.B #include <uuid.h>
.SH DESCRIPTION
The UUID library is used to generate unique identifiers for objects
that may be accessible beyond the local system. This library
generates UUIDs compatible with those created by the Open Software
Foundation (OSF) Distributed Computing Environment (DCE) utility
.BR uuidgen .
.sp
The UUIDs generated by this library can be reasonably expected to be
unique within a system, and unique across all systems. They could
be used, for instance, to generate unique HTTP cookies across multiple
web servers without communication between the servers, and without fear
of a name clash.
.SH "CONFORMING TO"
This library generates UUIDs compatible with OSF DCE 1.1, and hash based UUIDs
V3 and V5 compatible with RFC-4122.
.SH AUTHOR
Theodore Y.\& Ts'o
.SH AVAILABILITY
.B libuuid
is part of the util-linux package since version 2.15.1 and is available from
https://www.kernel.org/pub/linux/utils/util-linux/.
.SH "SEE ALSO"
.BR uuid_clear (3),
.BR uuid_compare (3),
.BR uuid_copy (3),
.BR uuid_generate (3),
.BR uuid_is_null (3),
.BR uuid_parse (3),
.BR uuid_time (3),
.BR uuid_unparse (3)
|
