175 lines
4.6 KiB
Groff
175 lines
4.6 KiB
Groff
.\" Copyright (c) 1990, 1991, 1993, 1994, 2003
|
|
.\" 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.
|
|
.\"
|
|
.\" from: @(#)chown.8 8.3 (Berkeley) 3/31/94
|
|
.\" $NetBSD: chown.8,v 1.6 2012/10/23 17:30:59 wiz Exp $
|
|
.\"
|
|
.Dd October 22, 2012
|
|
.Dt CHOWN 8
|
|
.Os
|
|
.Sh NAME
|
|
.Nm chown
|
|
.Nd change file owner and group
|
|
.Sh SYNOPSIS
|
|
.Nm
|
|
.Oo
|
|
.Fl R
|
|
.Op Fl H | Fl L | Fl P
|
|
.Oc
|
|
.Op Fl fhv
|
|
.Ar owner Ns Op Ar :group
|
|
.Ar
|
|
.Nm
|
|
.Oo
|
|
.Fl R
|
|
.Op Fl H | Fl L | Fl P
|
|
.Oc
|
|
.Op Fl fhv
|
|
.Ar :group
|
|
.Ar
|
|
.Nm
|
|
.Oo
|
|
.Fl R
|
|
.Op Fl H | Fl L | Fl P
|
|
.Oc
|
|
.Op Fl fhv
|
|
.Fl Fl reference=rfile
|
|
.Ar
|
|
.Sh DESCRIPTION
|
|
.Nm
|
|
sets the user ID and/or the group ID of the specified files.
|
|
.Pp
|
|
The options are as follows:
|
|
.Bl -tag -width Ds
|
|
.It Fl H
|
|
If the
|
|
.Fl R
|
|
option is specified, symbolic links on the command line are followed.
|
|
(Symbolic links encountered in the tree traversal are not followed.)
|
|
.It Fl L
|
|
If the
|
|
.Fl R
|
|
option is specified, all symbolic links are followed.
|
|
.It Fl P
|
|
If the
|
|
.Fl R
|
|
option is specified, no symbolic links are followed.
|
|
.It Fl R
|
|
Change the user ID and/or the group ID for the file hierarchies rooted
|
|
in the files instead of just the files themselves.
|
|
.It Fl f
|
|
Don't report any failure to change file owner or group, nor modify
|
|
the exit status to reflect such failures.
|
|
.It Fl h
|
|
If
|
|
.Ar file
|
|
is a symbolic link, the owner and/or group of the link is changed.
|
|
.It Fl v
|
|
Cause
|
|
.Nm
|
|
to be verbose, showing files as they are processed.
|
|
.El
|
|
.Pp
|
|
The
|
|
.Fl H ,
|
|
.Fl L
|
|
and
|
|
.Fl P
|
|
options are ignored unless the
|
|
.Fl R
|
|
option is specified.
|
|
In addition, these options override each other and the
|
|
command's actions are determined by the last one specified.
|
|
.Pp
|
|
The
|
|
.Fl L
|
|
option cannot be used together with the
|
|
.Fl h
|
|
option.
|
|
.Pp
|
|
The
|
|
.Ar owner
|
|
and
|
|
.Ar group
|
|
operands are both optional, however, one must be specified; alternatively,
|
|
both the owner and group may be specified using a reference
|
|
.Ar rfile
|
|
specified using the
|
|
.Fl Fl reference
|
|
argument.
|
|
If the
|
|
.Ar group
|
|
operand is specified, it must be preceded by a colon (``:'') character.
|
|
.Pp
|
|
The
|
|
.Ar owner
|
|
may be either a user name or a numeric user ID.
|
|
The
|
|
.Ar group
|
|
may be either a group name or a numeric group ID.
|
|
Since it is valid to have a user or group name that is numeric (and
|
|
doesn't have the numeric ID that matches its name) the name lookup
|
|
is always done first.
|
|
Preceding an ID with a ``#'' character will force it to be taken
|
|
as a number.
|
|
.Pp
|
|
The ownership of a file may only be altered by a super-user for
|
|
obvious security reasons.
|
|
.Pp
|
|
Unless invoked by the super-user,
|
|
.Nm
|
|
clears the set-user-id and set-group-id bits on a file to prevent
|
|
accidental or mischievous creation of set-user-id and set-group-id
|
|
programs.
|
|
.Pp
|
|
The
|
|
.Nm
|
|
utility exits 0 on success, and \*[Gt]0 if an error occurs.
|
|
.Sh COMPATIBILITY
|
|
Previous versions of the
|
|
.Nm
|
|
utility used the dot (``.'') character to distinguish the group name.
|
|
This has been changed to be a colon (``:'') character so that user and
|
|
group names may contain the dot character.
|
|
.Sh SEE ALSO
|
|
.Xr chflags 1 ,
|
|
.Xr chgrp 1 ,
|
|
.Xr find 1 ,
|
|
.Xr chown 2 ,
|
|
.Xr lchown 2 ,
|
|
.Xr fts 3 ,
|
|
.Xr symlink 7
|
|
.Sh STANDARDS
|
|
The
|
|
.Nm
|
|
command is expected to be POSIX 1003.2 compliant.
|
|
.Pp
|
|
The
|
|
.Fl v
|
|
option and the use of ``#'' to force a numeric lookup
|
|
are extensions to
|
|
.St -p1003.2 .
|