1.\" $OpenBSD: uname.1,v 1.15 2010/07/22 07:38:56 jmc Exp $ 2.\" 3.\" Copyright (c) 1990 The Regents of the University of California. 4.\" 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.\" from: @(#)du.1 6.13 (Berkeley) 6/20/91 31.\" 32.Dd $Mdocdate: July 22 2010 $ 33.Dt UNAME 1 34.Os 35.Sh NAME 36.Nm uname 37.Nd print operating system name 38.Sh SYNOPSIS 39.Nm uname 40.Op Fl amnprsv 41.Sh DESCRIPTION 42The 43.Nm uname 44utility writes symbols representing one or more system characteristics 45to the standard output. 46.Pp 47The options are as follows: 48.Bl -tag -width Ds 49.It Fl a 50Behave as though all of the options 51.Fl mnrsv 52were specified. 53.It Fl m 54Print the machine hardware name. 55.It Fl n 56Print the nodename (the nodename may be a name 57that the system is known by to a communications 58network). 59.It Fl p 60Print the processor type in more detail. 61.It Fl r 62Print the operating system release. 63.It Fl s 64Print the operating system name. 65.It Fl v 66Print the operating system version. 67.El 68.Pp 69If no options are specified, 70.Nm uname 71prints the operating system name as if the 72.Fl s 73option had been specified. 74.Pp 75.Ex -std uname 76.Sh SEE ALSO 77.Xr hostname 1 , 78.Xr machine 1 , 79.Xr uname 3 80.Sh STANDARDS 81The 82.Nm 83utility is compliant with the 84.St -p1003.1-2008 85specification. 86.Pp 87The flag 88.Op Fl p 89is an extension to that specification. 90.Sh HISTORY 91The 92.Nm 93command appeared in 94.Bx 4.4 . 95