1.\" $OpenBSD: arch.1,v 1.9 2007/05/31 19:20:07 jmc Exp $ 2.\" 3.\" Copyright (c) 1994 SigmaSoft, Th. Lockert 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.\" 15.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25.\" 26.\" $OpenBSD: arch.1,v 1.9 2007/05/31 19:20:07 jmc Exp $ 27.\" 28.Dd $Mdocdate: May 31 2007 $ 29.Dt ARCH 1 30.Os 31.Sh NAME 32.Nm arch , 33.Nm machine 34.Nd print architecture type 35.Sh SYNOPSIS 36.Nm arch 37.Op Fl ks 38.Nm machine 39.Op Fl a 40.Sh DESCRIPTION 41The 42.Nm arch 43and 44.Nm machine 45commands display the machine's architecture in slightly different ways. 46.Nm arch 47by default displays the application architecture, defined by both the 48operating system and the instruction set architecture, while 49.Nm machine 50displays the kernel architecture (without the operating system part). 51Note that both commands output the target architecture as opposed to 52.Xr uname 1 53which describes the host. 54This is useful for dynamic discovery 55of the target architecture in build or configuration scripts 56needing to work in cross-compilation environments. 57.Pp 58The options for 59.Nm arch 60are as follows: 61.Bl -tag -width indent 62.It Fl k 63Display the kernel architecture instead of application 64architecture. 65.It Fl s 66Display the chosen architecture in a short form, i.e., without the 67operating system prefixed. 68.El 69.Pp 70The options for 71.Nm machine 72are as follows: 73.Bl -tag -width indent 74.It Fl a 75Display the application architecture instead of the kernel architecture. 76.El 77.Sh SEE ALSO 78.Xr uname 1 79