1.\" $NetBSD: getextattr.1,v 1.2 2005/01/02 18:41:23 wiz Exp $ 2.\" 3.\"- 4.\" Copyright (c) 2000, 2001 Robert N. M. Watson 5.\" Copyright (c) 2002 Networks Associates Technology, Inc. 6.\" All rights reserved. 7.\" 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 12.\" 13.\" Redistribution and use in source and binary forms, with or without 14.\" modification, are permitted provided that the following conditions 15.\" are met: 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. 21.\" 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 32.\" SUCH DAMAGE. 33.\" 34.\" $FreeBSD: src/usr.sbin/extattr/rmextattr.8,v 1.4 2003/02/24 22:53:25 ru Exp $ 35.\" 36.Dd January 2, 2005 37.Dt RMEXTATTR 8 38.Os 39.Sh NAME 40.Nm getextattr , 41.Nm lsextattr , 42.Nm rmextattr , 43.Nm setextattr 44.Nd manipulate extended attributes 45.Sh SYNOPSIS 46.Nm getextattr 47.Op Fl fhqsx 48.Ar attrnamespace 49.Ar attrname 50.Ar filename ... 51.Nm lsextattr 52.Op Fl fhq 53.Ar attrnamespace 54.Ar filename ... 55.Nm rmextattr 56.Op Fl fhq 57.Ar attrnamespace 58.Ar attrname 59.Ar filename ... 60.Nm setextattr 61.Op Fl fhnq 62.Ar attrnamespace 63.Ar attrname 64.Ar attrvalue 65.Ar filename ... 66.Sh DESCRIPTION 67These utilities are user tools to manipulate the named extended 68attributes on files and directories. 69The 70.Ar attrnamespace 71argument should be the namespace of the attribute to retrieve: legal 72values are 73.Cm user 74and 75.Cm system . 76The 77.Ar attrname 78argument should be the name of the attribute, 79.Ar filename 80the name of the target file or directory, 81.Ar attrvalue 82a string to store in the attribute. 83.Pp 84The following options are available: 85.Bl -tag -width indent 86.It Fl f 87(Force.) 88Ignore errors on individual filenames and continue with 89the remaining arguments. 90.It Fl h 91(No follow.) 92If the file is a symbolic link, perform the operation on the 93link itself rather than the file that the link points to. 94.It Fl n 95.Dv ( NUL Ns 96-terminate.) 97.Dv NUL Ns 98-terminate the extent content written out. 99.It Fl q 100(Quiet.) 101Do not print out the pathname and suppress error messages. 102.It Fl s 103(Stringify.) 104Escape nonprinting characters and put quotes around the output. 105.It Fl x 106(Hex.) 107Print the output in hexadecimal. 108.El 109.Sh EXAMPLES 110.Bd -literal 111setextattr system md5 `md5 -q /boot/kernel/kernel` /boot/kernel/kernel 112getextattr system md5 /boot/kernel/kernel 113lsextattr system /boot/kernel/kernel 114rmextattr system md5 /boot/kernel/kernel 115.Ed 116.Sh SEE ALSO 117.Xr extattr 2 , 118.Xr extattr 3 , 119.Xr extattrctl 8 , 120.Xr extattr 9 121.Sh HISTORY 122Extended attribute support was developed as part of the 123.Tn TrustedBSD 124Project, 125and introduced in 126.Fx 5.0 127and 128.Nx 3.0 . 129It was developed to support security extensions requiring additional labels 130to be associated with each file or directory. 131.Sh AUTHORS 132.An Robert N M Watson 133.An Poul-Henning Kamp 134.Sh BUGS 135The 136.Nm setextattr 137utility can only be used to set attributes to strings. 138