Index: head/usr.sbin/chroot/chroot.8 =================================================================== --- head/usr.sbin/chroot/chroot.8 (revision 362664) +++ head/usr.sbin/chroot/chroot.8 (revision 362665) @@ -1,116 +1,118 @@ .\" Copyright (c) 1988, 1991, 1993 .\" The Regents of the University of California. All rights reserved. .\" .\" Redistribution and use in source and binary forms, with or without .\" modification, are permitted provided that the following conditions .\" are met: .\" 1. Redistributions of source code must retain the above copyright .\" notice, this list of conditions and the following disclaimer. .\" 2. Redistributions in binary form must reproduce the above copyright .\" notice, this list of conditions and the following disclaimer in the .\" documentation and/or other materials provided with the distribution. .\" 3. Neither the name of the University nor the names of its contributors .\" may be used to endorse or promote products derived from this software .\" without specific prior written permission. .\" .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE .\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF .\" SUCH DAMAGE. .\" .\" @(#)chroot.8 8.1 (Berkeley) 6/9/93 .\" $FreeBSD$ .\" -.Dd March 14, 2019 +.Dd June 27, 2020 .Dt CHROOT 8 .Os .Sh NAME .Nm chroot .Nd change root directory .Sh SYNOPSIS .Nm .Op Fl G Ar group Ns Op Cm \&, Ns Ar group ... .Op Fl g Ar group .Op Fl u Ar user .Ar newroot .Op Ar command Op Ar arg ... .Sh DESCRIPTION The .Nm utility changes its current and root directories to the supplied directory .Ar newroot and then exec's .Ar command with provided arguments, if supplied, or an interactive copy of the user's login shell. .Pp The options are as follows: .Bl -tag -width "-G group[,group ...]" .It Fl G Ar group Ns Op Cm \&, Ns Ar group ... Run the command with the permissions of the specified groups. .It Fl g Ar group Run the command with the permissions of the specified .Ar group . .It Fl u Ar user Run the command as the .Ar user . .El .Sh ENVIRONMENT The following environment variable is referenced by .Nm : .Bl -tag -width "SHELL" .It Ev SHELL If set, the string specified by .Ev SHELL is interpreted as the name of the shell to exec. If the variable .Ev SHELL is not set, .Pa /bin/sh is used. .El .Sh EXAMPLES .Bl -tag -width 0n .It Sy Example 1\&: No Chrooting into a New Root Directory .Pp The following command opens the .Xr csh 1 shell after chrooting to the standard root directory. .Bd -literal -offset 2n .Li # Ic chroot / /bin/csh .Ed .It Sy Example 2\&: No Execution of a Command with a Changed Root Directory .Pp The following command changes a root directory with .Nm and then runs .Xr ls 1 to list the contents of .Pa /sbin . .Bd -literal -offset 2n .Li # Ic chroot /tmp/testroot ls /sbin .Ed .El .Sh SEE ALSO .Xr chdir 2 , .Xr chroot 2 , .Xr setgid 2 , .Xr setgroups 2 , .Xr setuid 2 , .Xr getgrnam 3 , .Xr environ 7 , .Xr jail 8 .Sh HISTORY The .Nm utility first appeared in -.Bx 4.4 . +.At III +and +.Bx 4.3 Reno .