1.\" $OpenBSD: uname.3,v 1.13 2011/04/19 22:19:46 schwarze Exp $ 2.\" 3.\" Copyright (c) 1994 4.\" The Regents of the University of California. All rights reserved. 5.\" 6.\" Redistribution and use in source and binary forms, with or without 7.\" modification, are permitted provided that the following conditions 8.\" are met: 9.\" 1. Redistributions of source code must retain the above copyright 10.\" notice, this list of conditions and the following disclaimer. 11.\" 2. Redistributions in binary form must reproduce the above copyright 12.\" notice, this list of conditions and the following disclaimer in the 13.\" documentation and/or other materials provided with the distribution. 14.\" 3. Neither the name of the University nor the names of its contributors 15.\" may be used to endorse or promote products derived from this software 16.\" without specific prior written permission. 17.\" 18.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 19.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 22.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28.\" SUCH DAMAGE. 29.\" 30.Dd $Mdocdate: April 19 2011 $ 31.Dt UNAME 3 32.Os 33.Sh NAME 34.Nm uname 35.Nd get system identification 36.Sh SYNOPSIS 37.Fd #include <sys/utsname.h> 38.Ft int 39.Fn uname "struct utsname *name" 40.Sh DESCRIPTION 41The 42.Fn uname 43function stores NUL-terminated strings of information identifying 44the current system into the structure referenced by 45.Fa name . 46.Pp 47The 48.Li utsname 49structure is defined in the 50.Aq Pa sys/utsname.h 51header file, and contains the following members: 52.Pp 53.Bl -tag -width nodenameXXXX -offset indent -compact 54.It Fa sysname 55Name of the operating system implementation. 56.It Fa nodename 57Network name of this machine. 58.It Fa release 59Release level of the operating system. 60.It Fa version 61Version level of the operating system. 62.It Fa machine 63Machine hardware platform. 64.El 65.Sh RETURN VALUES 66The 67.Fn uname 68function returns a non-negative value if successful; 69otherwise the value -1 is returned and the global variable 70.Va errno 71is set to indicate the error. 72.Sh ERRORS 73The 74.Fn uname 75function may fail and set 76.Va errno 77for any of the errors specified for the library function 78.Xr sysctl 3 . 79.Sh SEE ALSO 80.Xr uname 1 , 81.Xr sysctl 3 82.Sh STANDARDS 83The 84.Fn uname 85function conforms to 86.St -p1003.1-88 . 87.Sh HISTORY 88The 89.Fn uname 90function first appeared in 91.Bx 4.4 . 92