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HTML rendering created 2025-09-06 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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NAME | SYNOPSIS | DESCRIPTION | OPTIONS | EXAMPLES | AUTHOR | SEE ALSO | COLOPHON |
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SETFATTR(1) File Utilities SETFATTR(1)
setfattr - set extended attributes of filesystem objects
setfattr [-h] -n name [-v value] pathname...
setfattr [-h] -x name pathname...
setfattr [-h] --restore=file
The setfattr command associates a new value with an extended
attribute name for each specified file.
-n name, --name=name
Specifies the name of the extended attribute to set.
-v value, --value=value
Specifies the new value of the extended attribute. There are
three methods available for encoding the value. If the given
string is enclosed in double quotes, the inner string is
treated as text. In that case, backslashes and double quotes
have special meanings and need to be escaped by a preceding
backslash. Any control characters can be encoded as a
backslash followed by three digits as its ASCII code in octal.
If the given string begins with 0x or 0X, it expresses a
hexadecimal number. If the given string begins with 0s or 0S,
base64 encoding is expected. Also see the --encoding option
of getfattr(1).
-x name, --remove=name
Remove the named extended attribute entirely.
-h, --no-dereference
Do not follow symlinks. If pathname is a symbolic link, it is
not followed, but is instead itself the inode being modified.
--restore=file
Restores extended attributes from file. The file must be in
the format generated by the getfattr command with the --dump
option. If a dash (-) is given as the file name, setfattr
reads from standard input.
--raw
Do not decode the attribute value. Can be used to set values
obtained with getfattr --only-values.
--version
Print the version of setfattr and exit.
--help
Print help explaining the command line options.
-- End of command line options. All remaining parameters are
interpreted as file names, even if they start with a dash
character.
Add extended attribute to user namespace:
$ setfattr -n user.foo -v bar file.txt
To add md5sum of the file as an extended attribute:
# setfattr -n trusted.md5sum -v d41d8cd98f00b204e00998ecf8427e file.txt
Andreas Gruenbacher, <[email protected]> and the SGI
XFS development team, <[email protected]>.
Please send your bug reports or comments to
<https://savannah.nongnu.org/bugs/?group=attr > or <acl-
[email protected]>.
getfattr(1), xattr(7)
This page is part of the attr (manipulating filesystem extended
attributes) project. Information about the project can be found
at ⟨http://savannah.nongnu.org/projects/attr⟩. If you have a bug
report for this manual page, see
⟨http://savannah.nongnu.org/bugs/?group=attr⟩. This page was
obtained from the project's upstream Git repository
⟨git://git.savannah.nongnu.org/attr.git⟩ on 2025-08-11. (At that
time, the date of the most recent commit that was found in the
repository was 2025-06-07.) If you discover any rendering
problems in this HTML version of the page, or you believe there is
a better or more up-to-date source for the page, or you have
corrections or improvements to the information in this COLOPHON
(which is not part of the original manual page), send a mail to
[email protected]
Dec 2001 Extended Attributes SETFATTR(1)
Pages that refer to this page: attr(1), getfattr(1), getxattr(2), listxattr(2), removexattr(2), setxattr(2), tmpfiles.d(5), xattr(7)
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HTML rendering created 2025-09-06 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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