.\""Copyright (c) 2005-2011 Apple Computer, Inc. All Rights Reserved.
.Dd July 1, 2005
.Dt UUIDGEN 1  
.Os "Mac OS X"
.Sh NAME
.Nm uuidgen
.Nd generates new UUID strings
.Sh SYNOPSIS
.Nm
.Op -hdr
.Sh DESCRIPTION
The
.Nm
command generates a Universally Unique IDentifier (UUID), a 128-bit value guaranteed to be unique over both space and time.
.Pp
The following options are available:
.Bl -tag -width "-hdr ___"
.It Fl hdr
Emit CoreFoundation CFUUID-based source code for using the uuid in a header.
.El
.Pp
.Sh RETURN VALUE
The UUID is printed to standard output as a hyphen-punctuated ASCII string of the form: EEF45689-BBE5-4FB6-9E80-41B78F6578E2 (in printf(3) format "%08X-%04X-%04X-%04X-%012X"), unless the -hdr option is given, in which case a fragment of source code is output.
.Pp