1.\" $OpenBSD: env.1,v 1.18 2010/09/29 07:44:56 jmc Exp $ 2.\" Copyright (c) 1980, 1990 The Regents of the University of California. 3.\" All rights reserved. 4.\" 5.\" This code is derived from software contributed to Berkeley by 6.\" the Institute of Electrical and Electronics Engineers, Inc. 7.\" Redistribution and use in source and binary forms, with or without 8.\" modification, are permitted provided that the following conditions 9.\" are met: 10.\" 1. Redistributions of source code must retain the above copyright 11.\" notice, this list of conditions and the following disclaimer. 12.\" 2. Redistributions in binary form must reproduce the above copyright 13.\" notice, this list of conditions and the following disclaimer in the 14.\" documentation and/or other materials provided with the distribution. 15.\" 3. Neither the name of the University nor the names of its contributors 16.\" may be used to endorse or promote products derived from this software 17.\" without specific prior written permission. 18.\" 19.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29.\" SUCH DAMAGE. 30.\" 31.\" from: @(#)printenv.1 6.7 (Berkeley) 7/28/91 32.\" 33.Dd $Mdocdate: September 29 2010 $ 34.Dt ENV 1 35.Os 36.Sh NAME 37.Nm env 38.Nd set and print environment 39.Sh SYNOPSIS 40.Nm env 41.Op Fl i 42.Oo 43.Ar name Ns = Ns Ar value ... 44.Oc 45.Oo 46.Ar utility 47.Op Ar argument ... 48.Oc 49.Sh DESCRIPTION 50.Nm 51executes 52.Ar utility 53after modifying the environment as 54specified on the command line. 55The option 56.Ar name Ns = Ns Ar value 57specifies 58an environment variable, 59.Ar name , 60with a value of 61.Ar value . 62.Pp 63The options are as follows: 64.Bl -tag -width Ds 65.It Fl i 66Causes 67.Nm 68to completely ignore the environment it inherits. 69.El 70.Pp 71If no 72.Ar utility 73is specified, 74.Nm 75prints out the names and values 76of the variables in the environment, with one 77.Ar name Ns = Ns Ar value 78pair per line. 79.Sh EXIT STATUS 80The 81.Nm 82utility exits with one of the following values: 83.Bl -tag -width Ds 84.It 0 85.Ar utility 86was invoked and completed successfully. 87In this case the exit code is returned by the utility itself, not 88.Nm . 89If no utility was specified, then 90.Nm 91completed successfully and returned the exit code itself. 92.It 1 93An invalid command line option was passed to 94.Nm . 95.It 1\(en125 96.Ar utility 97was invoked but failed in some way; 98see its manual page for more information. 99In this case the exit code is returned by the utility itself, not 100.Nm . 101.It 126 102.Ar utility 103was found but could not be invoked. 104.It 127 105.Ar utility 106could not be found. 107.El 108.Sh SEE ALSO 109.Xr execvp 3 , 110.Xr environ 7 111.Sh STANDARDS 112The 113.Nm 114utility is compliant with the 115.St -p1003.1-2008 116specification. 117.Pp 118The historic 119.Fl 120option has been deprecated but is still supported in this implementation. 121.Sh BUGS 122.Nm 123doesn't handle commands with equal 124.Pq Sq = 125signs in their 126names, for obvious reasons. 127