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======================================================================== Title "UUID 1" UUID 1 "OSSP uuid 1.6.2" "04-Jul-2008" "Universally Unique Identifier"
For nroff, turn off justification. Always turn off hyphenation; it makes way too many mistakes in technical documents. "NAME"
\fB\s-1OSSP\s0 uuid -
Universally Unique Identifier Command-Line Tool
"VERSION"
Header "VERSION" \s-1OSSP\s0 uuid \s-11.6.2 (04-Jul-2008)\s0
"SYNOPSIS"
Header "SYNOPSIS" \fBuuid
[
-v version]
[
-m]
[
-n count]
[
-1]
[
-F format]
[
-o filename]
[
namespace name]
\fBuuid
\fB-d
[-r]
[-o filename]
\fIuuid
"DESCRIPTION"
Header "DESCRIPTION" \fB\s-1OSSP\s0 uuid is a \s-1ISO-C:1999\s0 application programming interface (\s-1API\s0) and
corresponding command line interface (\s-1CLI\s0) for the generation of \s-1DCE\s0
1.1, \
s-1ISO/
IEC\s0 11578:1996 and \s-1IETF\s0 \s-1RFC-4122\s0 compliant
Universally Unique
Identifier (\s-1UUID\s0). It supports \s-1DCE\s0 1.1 variant UUIDs of version 1 (time
and node based), version 3 (name based, \s-1MD5\s0), version 4 (random number
based) and version 5 (name based, \s-1SHA-1\s0). Additional \s-1API\s0 bindings are
provided for the languages \s-1ISO-\*(C+:1998\s0, Perl:5 and \s-1PHP:4/5\s0. Optional
backward compatibility exists for the ISO-C \s-1DCE-1\s0.1 and Perl Data::UUID
APIs.
UUIDs are 128 bit numbers which are intended to have a high likelihood
of uniqueness over space and time and are computationally difficult
to guess. They are globally unique identifiers which can be locally
generated without contacting a global registration authority. UUIDs
are intended as unique identifiers for both mass tagging objects
with an extremely short lifetime and to reliably identifying very
persistent objects across a network.
This is the command line interface (\s-1CLI\s0) of \s-1OSSP\s0 uuid. For a
detailed description of UUIDs see the documentation of the application
programming interface (\s-1API\s0) in uuid\|(3).
"OPTIONS"
Header "OPTIONS" "-v version" 3
Item "-v version" Sets the version of the generated \s-1DCE\s0 1.1 variant \s-1UUID\s0. Supported
are
version "
1\*(L", \*(R"
3\*(L", \*(R"
4\*(L" and \*(R"
5\*(L". The default is \*(R"
1".
.Sp
For version 3 and version 5 UUIDs the additional command line arguments
\fInamespace and
name have to be given. The
namespace is either
a \s-1UUID\s0 in string representation or an identifier for internally
pre-defined namespace UUIDs (currently known are "
\*(C`ns:DNS\*(C'\*(L",
\*(R"
\*(C`ns:URL\*(C'\*(L", \*(R"
\*(C`ns:OID\*(C'\*(L", and \*(R"
\*(C`ns:X500\*(C'"). The
name is a string of
arbitrary length.
"-m" 3
Item "-m" Forces the use of a random multi-cast \s-1MAC\s0 address when generating
version 1 UUIDs. By default the real physical \s-1MAC\s0 address of the system
is used.
"-n count" 3
Item "-n count" Generate
count UUIDs instead of just a single one (the default).
"-1" 3
Item "-1" If option
-n is used with a
count greater than
1, then this
option can enforce the reset the \s-1UUID\s0 context for each generated \s-1UUID\s0.
This makes no difference for
version 3,
4 and
5 UUIDs. But
version
1 UUIDs are based on the previously generated \s-1UUID\s0 which is
remembered in the \s-1UUID\s0 context of the \s-1API\s0. Option
-1 deletes the
remembered \s-1UUID\s0 on each iteration.
"-F format" 3
Item "-F format" Representation format for importing or exporting an \s-1UUID\s0. The
following (case insensitive) format identifiers are currently recognized:
Item "BIN (binary representation)" This is the raw 128 bit network byte order binary representation of a
\s-1UUID\s0. Example is the octet stream \*(C`0xF8 0x1D 0x4F 0xAE 0x7D 0xEC 0x11
0xD0 0xA7 0x65 0x00 0xA0 0xC9 0x1E 0x6B 0xF6\*(C'.
Item "STR (string representation)" This is the 36 character hexadecimal \s-1ASCII\s0 string representation of a
\s-1UUID\s0. Example is the string "\*(C`f81d4fae-7dec-11d0-a765-00a0c91e6bf6\*(C'".
Item "SIV (single integer value representation)" This is the maximum 39 character long single integer
value representation of a \s-1UUID\s0. Example is the string
"329800735698586629295641978511506172918".
"-o filename" 3
Item "-o filename" Write output to
filename instead of to
stdout.
"-d" 3
Item "-d" Decode a given \s-1UUID\s0 (given as a command line argument or if the command
line argument is "
\*(C`-\*(C'" the \s-1UUID\s0 is read from
stdin) and dump textual
information about the \s-1UUID\s0.
"EXAMPLES"
Header "EXAMPLES" .Vb 3
# generate DCE 1.1 v1 UUID (time and node based)
$ uuid -v1
01c47915-4777-11d8-bc70-0090272ff725
\&
# decode and dump DCE 1.1 v1 UUID (time and node based)
$ uuid -d 01c47915-4777-11d8-bc70-0090272ff725
encode: STR: 01c47915-4777-11d8-bc70-0090272ff725
SIV: 2349374037528578887923094374772111141
decode: variant: DCE 1.1,
ISO/
IEC 11578:1996
version: 1 (time and node based)
content: time: 2004-01-15 16:22:26.376322.1 UTC
clock: 15472 (usually random)
node: 00:90:27:2f:f7:25 (global unicast)
\&
# generate DCE 1.1 v3 UUID (name based)
$ uuid -v3 ns:URL http://www.ossp.org/
02d9e6d5-9467-382e-8f9b-9300a64ac3cd
\&
# decode and dump DCE 1.1 v3 UUID (name based)
$ uuid -d 02d9e6d5-9467-382e-8f9b-9300a64ac3cd
encode: STR: 02d9e6d5-9467-382e-8f9b-9300a64ac3cd
SIV: 3789866285607910888100818383505376205
decode: variant: DCE 1.1,
ISO/
IEC 11578:1996
version: 3 (name based, MD5)
content: 02:D9:E6:D5:94:67:08:2E:0F:9B:93:00:A6:4A:C3:CD
(not decipherable: MD5 message digest only)
\&
# generate DCE 1.1 v4 UUID 4 (random data based)
$ uuid -v4
eb424026-6f54-4ef8-a4d0-bb658a1fc6cf
\&
# decode and dump DCE 1.1 v4 UUID 4 (random data based)
$ uuid -d eb424026-6f54-4ef8-a4d0-bb658a1fc6cf
encode: STR: eb424026-6f54-4ef8-a4d0-bb658a1fc6cf
SIV: 312712571721458096795100956955942831823
decode: variant: DCE 1.1,
ISO/
IEC 11578:1996
version: 4 (random data based)
content: EB:42:40:26:6F:54:0E:F8:24:D0:BB:65:8A:1F:C6:CF
(no semantics: random data only)
.Ve
"SEE ALSO"
Header "SEE ALSO" \fIuuid\|(3),
OSSP::uuid\|(3).