122 lines
3.8 KiB
Groff
122 lines
3.8 KiB
Groff
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.\" Copyright (C) 2002, 2004 Silicon Graphics, Inc. Al rights reserved.
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.\" Copyright (C) 2002, 2004 Andreas Gruenbacher <agruen@suse.de>
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.\"
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.\" You should have received a copy of the GNU General Public License
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.\" along with this program. If not, see <http://www.gnu.org/licenses/>.
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.\"
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.\" This is free documentation; you can redistribute it and/or
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.\" modify it under the terms of the GNU General Public License as
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.\" published by the Free Software Foundation; either version 2 of
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.\" the License, or (at your option) any later version.
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.\"
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.\" The GNU General Public License's references to "object code"
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.\" and "executables" are to be interpreted as the output of any
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.\" document formatting or typesetting system, including
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.\" intermediate and printed output.
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.\"
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.\" This manual is distributed in the hope that it will be useful,
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.\" but WITHOUT ANY WARRANTY; without even the implied warranty of
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.\" MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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.\" GNU General Public License for more details.
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.\"
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.\" You should have received a copy of the GNU General Public
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.\" License along with this manual. If not, see
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.\" <http://www.gnu.org/licenses/>.
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.\"
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.TH SETFATTR 1 "Extended Attributes" "Dec 2001" "File Utilities"
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.SH NAME
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setfattr \- set extended attributes of filesystem objects
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.SH SYNOPSIS
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.nf
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\f3setfattr\f1 [\f3\-h\f1] \f3\-n name\f1 [\f3\-v value\f1] \f3pathname\f1...
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\f3setfattr\f1 [\f3\-h\f1] \f3\-x name\f1 \f3pathname\f1...
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\f3setfattr\f1 [\f3\-h\f1] \f3\-\-restore=file\f1
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.fi
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.SH DESCRIPTION
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The
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.B setfattr
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command associates a new
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.I value
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with an extended attribute
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.IR name
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for each specified file.
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.SH OPTIONS
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.TP 4
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.BR \-n " \f2name\f1, " \-\-name "=\f2name\f1"
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Specifies the name of the extended attribute to set.
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.TP
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.BR \-v " \f2value\f1, " \-\-value "=\f2value\f1"
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Specifies the new value of the extended attribute. There are three methods
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available for encoding the value. If the given string is enclosed in double
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quotes, the inner string is treated as text. In that case, backslashes and
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double quotes have special meanings and need to be escaped by a preceding
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backslash. Any control characters can be encoded as a backslash followed by
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three digits as its ASCII code in octal. If the given string begins with 0x or
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0X, it expresses a hexadecimal number. If the given string begins with 0s or
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0S, base64 encoding is expected. Also see the \-\-encoding option of
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getfattr(1).
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.TP
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.BR \-x " \f2name\f1, " \-\-remove "=\f2name\f1"
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Remove the named extended attribute entirely.
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.TP
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.BR \-h ", " \-\-no-dereference
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Do not follow symlinks. If
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.I pathname
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is a symbolic link, it is not followed, but is instead itself the
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inode being modified.
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.TP
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.BR \-\-restore =\f2file\f1
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Restores extended attributes from file.
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The file must be in the format generated by the
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.B getfattr
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command with the
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.B \-\-dump
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option.
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If a dash (\c
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.IR \- )
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is given as the file name,
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.B setfattr
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reads from standard input.
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.TP
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.B \-\-raw
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Do not decode the attribute value. Can be used to set values obtained with
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.BR "getfattr --only-values" .
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.TP
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.B \-\-version
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Print the version of
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.B setfattr
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and exit.
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.TP
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.B \-\-help
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Print help explaining the command line options.
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.TP
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.B \-\-
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End of command line options.
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All remaining parameters are interpreted as file names, even if they
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start with a dash character.
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.SH EXAMPLES
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Add extended attribute to user namespace:
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.PP
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.nf
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.B "$ setfattr -n user.foo -v bar file.txt
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.fi
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.PP
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To add md5sum of the file as an extended attribute:
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.PP
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.nf
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.B "# setfattr -n trusted.md5sum -v d41d8cd98f00b204e00998ecf8427e file.txt
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.fi
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.SH AUTHOR
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Andreas Gruenbacher,
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.RI < andreas.gruenbacher@gmail.com >
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and the SGI XFS development team,
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.RI < linux-xfs@oss.sgi.com >.
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.P
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Please send your bug reports or comments to
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.RI < https://savannah.nongnu.org/bugs/?group=attr >
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or
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.RI < acl-devel@nongnu.org >.
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.SH "SEE ALSO"
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.BR getfattr (1),
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.BR attr (5)
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