.\"
.\" 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 July 20, 2012
.Dt JLS 8
.Os
.Sh NAME
.Nm jls
.Nd "list jails"
.Sh SYNOPSIS
.Nm
.Op Fl -libxo
.Op Fl dhNnqsv
.Op Fl j Ar jail
.Op Ar parameter ...
.Sh DESCRIPTION
The
.Nm
utility lists all active jails, or the specified jail.
Each jail is represented by one row which contains space-separated values of
the listed
.Ar parameters ,
including the pseudo-parameter
.Va all
which will show all available jail parameters.
A list of available parameters can be retrieved via
.Dq Nm sysctl Fl d Va security.jail.param .
See
.Xr jail 8
for a description of some core parameters.
.Pp
If no
.Ar parameters
or any of the options
.Fl hns
are given, the following four columns will be printed:
jail identifier (jid), IP address (ip4.addr), hostname (host.hostname),
and path (path).
.Pp
The following options are available:
.Bl -tag -width indent
.It Fl -libxo
Generate output via
.Xr libxo 3
in a selection of different human and machine readable formats.
See
.Xr xo_parse_args 3
for details on command line arguments.
.It Fl d
List
.Va dying
as well as active jails.
.It Fl h
Print a header line containing the parameters listed.
If no parameters are given on the command line,
.Va all
is assumed.
.It Fl N
In the standard display mode, print each jail's name instead of its
numeric ID.
If the jail does not have a name, the numeric ID is printed instead.
.It Fl n
Print parameters in
.Dq name=value
format, where each parameter is preceded by its name.
If no parameters are given on the command line,
.Va all
is assumed.
.It Fl q
Put quotes around parameters if they contain spaces or quotes, or are
the empty string.
.It Fl s
Print parameters suitable for passing to
.Xr jail 8 ,
skipping read-only and unused parameters.
Implies
.Fl nq .
.It Fl v
Extend the standard display with a multiple-line summary per jail,
containing the following parameters:
jail identifier (jid), hostname (host.hostname), path (path),
jail name (name), jail state (dying), cpuset ID (cpuset),
IP address(es) (ip4.addr and ip6.addr).
.It Fl j Ar jail
The jid or name of the
.Ar jail
to list.
Without this option, all active jails will be listed.
.El
.Sh SEE ALSO
.Xr jail_get 2 ,
.Xr jail 8 ,
.Xr jexec 8 ,
.Xr libxo 3 ,
.Xr xo_parse_args 3
.Sh HISTORY
The
.Nm
utility was added in
.Fx 5.1 .
Extensible jail parameters were introduced in
.Fx 8.0 .
libxo support was added in
.Fx 11.0 .