1.\" $OpenBSD: uname.1,v 1.20 2024/06/03 15:55:52 florian 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: June 3 2024 $ 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 strings representing one or more system characteristics 45to the standard output. 46The formats and meanings of all these strings vary among operating systems. 47.Pp 48The options are as follows: 49.Bl -tag -width Ds 50.It Fl a 51Behave as though all of the options 52.Fl mnrsv 53were specified. 54.It Fl m 55Print the name of the hardware type. 56On 57.Ox , 58this is the kernel architecture as returned by 59.Xr machine 1 . 60.It Fl n 61Print the network name of this machine. 62On 63.Ox , 64the same name can be printed with 65.Xr hostname 1 . 66.It Fl p 67Print the application architecture as returned by 68.Xr arch 1 69.Fl s . 70.It Fl r 71Print the operating system release. 72On 73.Ox , 74the format is 75.Sm off 76.Ar digit . digit . 77.Sm on 78.It Fl s 79Print the operating system name. 80On 81.Ox , 82this is always 83.Dq Ox . 84.It Fl v 85Print the operating system version. 86On 87.Ox , 88the format is 89.Ar SYSTEMNAME Ns # Ns Ar buildnumber 90with the 91.Ar SYSTEMNAME 92mentioned in 93.Xr config 8 . 94.El 95.Pp 96If no options are specified, 97.Nm uname 98prints the operating system name as if the 99.Fl s 100option had been specified. 101.Pp 102If 103.Fl a 104or more than one option is specified, 105.Ox 106prints the selected fields separated by single space characters 107in the following order: operating system name, network name, 108release, version, kernel architecture, application architecture. 109.Sh EXIT STATUS 110.Ex -std uname 111.Sh SEE ALSO 112.Xr hostname 1 , 113.Xr machine 1 , 114.Xr uname 3 115.Sh STANDARDS 116The 117.Nm 118utility is compliant with the 119.St -p1003.1-2008 120specification. 121.Pp 122The flag 123.Op Fl p 124is an extension to that specification. 125.Sh HISTORY 126The 127.Nm 128command first appeared in PWB/UNIX 1.0 129and was reimplemented for 130.Bx 4.4 . 131