4 .\" Copyright (c) 2000, 2001 Robert N. M. Watson
5 .\" Copyright (c) 2002 Networks Associates Technology, Inc.
6 .\" All rights reserved.
8 .\" This software was developed for the FreeBSD Project by Poul-Henning
9 .\" Kamp and Network Associates Laboratories, the Security Research Division
10 .\" of Network Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035
11 .\" ("CBOSS"), as part of the DARPA CHATS research program
13 .\" Redistribution and use in source and binary forms, with or without
14 .\" modification, are permitted provided that the following conditions
16 .\" 1. Redistributions of source code must retain the above copyright
17 .\" notice, this list of conditions and the following disclaimer.
18 .\" 2. Redistributions in binary form must reproduce the above copyright
19 .\" notice, this list of conditions and the following disclaimer in the
20 .\" documentation and/or other materials provided with the distribution.
22 .\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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
34 .\" $FreeBSD: src/usr.sbin/extattr/rmextattr.8,v 1.4 2003/02/24 22:53:25 ru Exp $
44 .Nd manipulate extended attributes
67 These utilities are user tools to manipulate the named extended
68 attributes on files and directories.
71 argument should be the namespace of the attribute to retrieve: legal
78 argument should be the name of the attribute,
80 the name of the target file or directory,
82 a string to store in the attribute.
84 The following options are available:
85 .Bl -tag -width indent
88 Ignore errors on individual filenames and continue with
89 the remaining arguments.
92 If the file is a symbolic link, perform the operation on the
93 link itself rather than the file that the link points to.
98 -terminate the extent content written out.
101 Do not print out the pathname and suppress error messages.
104 Escape nonprinting characters and put quotes around the output.
107 Print the output in hexadecimal.
111 setextattr system md5 `md5 -q /boot/kernel/kernel` /boot/kernel/kernel
112 getextattr system md5 /boot/kernel/kernel
113 lsextattr system /boot/kernel/kernel
114 rmextattr system md5 /boot/kernel/kernel
122 Extended attribute support was developed as part of the
129 It was developed to support security extensions requiring additional labels
130 to be associated with each file or directory.
132 .An Robert N M Watson
133 .An Poul-Henning Kamp
137 utility can only be used to set attributes to strings.