1.\" $OpenBSD: chroot.8,v 1.6 2001/05/28 15:26:55 aaron Exp $ 2.\" 3.\" Copyright (c) 1988, 1991 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. All advertising materials mentioning features or use of this software 15.\" must display the following acknowledgement: 16.\" This product includes software developed by the University of 17.\" California, Berkeley and its contributors. 18.\" 4. Neither the name of the University nor the names of its contributors 19.\" may be used to endorse or promote products derived from this software 20.\" without specific prior written permission. 21.\" 22.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32.\" SUCH DAMAGE. 33.\" 34.\" from: @(#)chroot.8 5.3 (Berkeley) 3/16/91 35.\" $Id: chroot.8,v 1.6 2001/05/28 15:26:55 aaron Exp $ 36.\" 37.Dd March 16, 1991 38.Dt CHROOT 8 39.Os 40.Sh NAME 41.Nm chroot 42.Nd change root directory 43.Sh SYNOPSIS 44.Nm chroot 45.Ar newroot 46.Op Ar command 47.Sh DESCRIPTION 48The 49.Nm 50command changes its root directory to the supplied directory 51.Ar newroot 52and executes 53.Ar command , 54if supplied, or an interactive copy of your shell. 55.Pp 56Note, 57.Ar command 58or the shell are run as your real user ID. 59.Sh ENVIRONMENT 60.Bl -tag -width SHELL 61.It Ev SHELL 62If set, 63the string specified by 64.Ev SHELL 65is interpreted as the name of 66the shell to execute. 67If the variable 68.Ev SHELL 69is not set, 70.Pa /bin/sh 71is used. 72.El 73.Sh SEE ALSO 74.Xr chdir 2 , 75.Xr chroot 2 , 76.Xr environ 7 77.Sh HISTORY 78The 79.Nm 80command is 81.Ud 82