164f11e22e
Bump Dd. PR: 207587 Submitted by: dewayne@heuristicsystems.com.au MFC after: 3 days Sponsored by: Essen Hackathon 2016
87 lines
2.6 KiB
Groff
87 lines
2.6 KiB
Groff
.\"
|
|
.\" Copyright (c) 2003 Mike Barcroft <mike@FreeBSD.org>
|
|
.\" 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.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
|
|
.\"
|
|
.\" $FreeBSD$
|
|
.\"
|
|
.Dd April 24, 2016
|
|
.Dt JEXEC 8
|
|
.Os
|
|
.Sh NAME
|
|
.Nm jexec
|
|
.Nd "execute a command inside an existing jail"
|
|
.Sh SYNOPSIS
|
|
.Nm
|
|
.Op Fl l
|
|
.Op Fl u Ar username | Fl U Ar username
|
|
.Ar jail Op Ar command ...
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Nm
|
|
utility executes
|
|
.Ar command
|
|
inside the
|
|
.Ar jail
|
|
identified by its jid or name.
|
|
If
|
|
.Ar command
|
|
is not specified then the user's shell is used.
|
|
.Pp
|
|
The following options are available:
|
|
.Bl -tag -width indent
|
|
.It Fl l
|
|
Execute in a clean environment.
|
|
The environment is discarded except for
|
|
.Ev HOME , SHELL , TERM , USER ,
|
|
and anything from the login class capability database for the user.
|
|
.It Fl u Ar username
|
|
The user name from host environment as whom the
|
|
.Ar command
|
|
should run.
|
|
This is the default.
|
|
.It Fl U Ar username
|
|
The user name from jailed environment as whom the
|
|
.Ar command
|
|
should run.
|
|
.El
|
|
.Sh SEE ALSO
|
|
.Xr jail_attach 2 ,
|
|
.Xr jail 8 ,
|
|
.Xr jls 8
|
|
.Sh HISTORY
|
|
The
|
|
.Nm
|
|
utility was added in
|
|
.Fx 5.1 .
|
|
.Sh BUGS
|
|
If the jail is not identified by
|
|
.Ar jid
|
|
there is a possible race in between the lookup of the jail
|
|
and executing the command inside the jail.
|
|
Giving a
|
|
.Ar jid
|
|
has a similar race as another process can stop the jail and
|
|
start another one after the user looked up the
|
|
.Ar jid .
|