freebsd-dev/bin/uuidgen/uuidgen.1
Marcel Moolenaar 9b2f268fb5 o Remove $Id$ from copyright; there's $FreeBSD$,
o  Remove static function uuid_print(); use uuid_to_string(3) in
   combination with printf(3) to achieve the same,
o  Remove unneeded includes,
o  Add a reference to uuid(3) to the manpage.
2002-11-01 06:20:14 +00:00

75 lines
2.6 KiB
Groff

.\" Copyright (c) 2002 Marcel Moolenaar
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.\" $FreeBSD$
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.Dd May 23, 2002
.Dt UUIDGEN 1
.Os
.Sh NAME
.Nm uuidgen
.Nd generate universally unique identifiers
.Sh SYNOPSIS
.Nm
.Op Fl 1
.Op Fl n Ar count
.Sh DESCRIPTION
The
.Nm
utility by default generates a single universally unique identifier (UUID),
also known as a globally unique identifier (GUID).
The UUID is written to stdout.
The following options can be used to change the number of identifiers
and the method used:
.Bl -tag -width indent
.It Fl 1
This option only has effect if multiple identifiers are to be generated and
instructs
.Nm
to not generate them in batch, but one at a time.
.It Fl n
This option controls the number of identifiers generated.
By default, multiple
identifiers are generated in batch.
.El
.Pp
Batched generation yields a dense set of identifiers in such a way that there
is no identifier that is larger than the smallest identifier in the set and
smaller than the largest identifier in the set and that is not already in the
set.
.Pp
When generating the identifiers one at a time, the identifiers will be close
to each other, but operating system latency and processing time will be
reflected in the distance between two successive identifiers.
.Sh DIAGNOSTICS
.Ex -std
.Sh SEE ALSO
.Xr uuidgen 2 ,
.Xr uuid 3
.Sh HISTORY
The
.Nm
command first appeared in
.Fx 5.0 .