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NetBSD 6.1.5 - man page for getextattr (netbsd section 1)

GETEXTATTR(1)			   BSD General Commands Manual			    GETEXTATTR(1)

NAME
     getextattr, lsextattr, rmextattr, setextattr -- manipulate extended attributes

SYNOPSIS
     getextattr [-fhq] [-s | -x | -v style] [namespace] attrname filename ...
     lsextattr [-fhq] namespace filename ...
     rmextattr [-fhq] [namespace] attrname filename ...
     setextattr [-fhnq] [namespace] attrname attrvalue filename ...
     setextattr [-fhnq] -i valuefile [namespace] attrname filename ...

DESCRIPTION
     These utilities are user tools to manipulate the named extended attributes on files and
     directories.

     The namespace argument should be the namespace of the attribute to retrieve: legal values
     are user and system.  For all operations except lsextattr, the namespace argument may be
     omitted if the attribute name is namespace prefixed, like in user.test.  In that later case,
     the user namespace prefix obviously selects user namespace.  system, security, and trusted
     namespace prefixes select the system namespace.

     The attrname argument should be the name of the attribute, filename the name of the target
     file or directory, attrvalue a string to store in the attribute.

     The following options are available:

     -f      (Force.)  Ignore errors on individual filenames and continue with the remaining
	     arguments.

     -h      (No follow.)  If the file is a symbolic link, perform the operation on the link
	     itself rather than the file that the link points to.

     -i valuefile
	     (Input file.)  Read the attribute value from file valuefile.  Use this flag in order
	     to set a binary value for an attribute.

     -n      (NUL-terminate.)  NUL-terminate the extent content written out.

     -q      (Quiet.)  Do not print out the pathname and suppress error messages.

     -s      (Stringify.)  Escape nonprinting characters and put quotes around the output.

     -v style
	     (Visual.)	Process the attribute value through vis(3), using style.  Valid values
	     for style are:

	     default
		     Use default vis(3) encoding.

	     c	     Use C-style backslash sequences, like in vis -c.

	     http    Use URI encoding from RFC 1808, like in vis -h.

	     octal   Display in octal, like in vis -o.

	     vis     Alias for default.

	     cstyle  Alias for c.

	     httpstyle
		     Alias for http.

     -x      (Hex.)  Print the output in hexadecimal.

EXAMPLES
     setextattr system md5 `md5 -q /boot/kernel/kernel` /boot/kernel/kernel
     getextattr system md5 /boot/kernel/kernel
     lsextattr system /boot/kernel/kernel
     rmextattr system md5 /boot/kernel/kernel

     Examples omitting namespace (and attribute value) argument:

     setextattr -i valuefile trusted.gfid /export/wd3a
     getextattr -x trusted.gfid /export/wd3a

SEE ALSO
     extattr(3), extattrctl(8), extattr(9)

HISTORY
     Extended attribute support was developed as part of the TrustedBSD Project, and introduced
     in FreeBSD 5.0 and NetBSD 3.0.  It was developed to support security extensions requiring
     additional labels to be associated with each file or directory.

     Extended attribute support was resurrected and made more usable in NetBSD 5.2.

AUTHORS
     Robert N M Watson
     Poul-Henning Kamp
     Emmanuel Dreyfus

BSD					 January 2, 2005				      BSD


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