NAME

       gfxattr - Manipulate extended attributes in Gfarm file system

SYNOPSIS

       gfxattr [ -s | -g | -l | -r ] [ -x ] [ -c | -m ] [ -f xattrfile ] file [ xattrname ]

DESCRIPTION

       gfxattr  manipulates  extended  attributes  and XML extended attributes of a specified file.  An extended
       attribute consists of an attribute name and an attribute value, which  are  arbitrary  strings.   An  XML
       extended attribute is an extended attribute having an XML attribute value.  Since XML extended attributes
       have a different name space from extended attributes, the same attribute name can be used.

       When  the  -x option is specified, XML extended attributes are manipulated.  It is possible to search XML
       extended attributes by XPath query using gffindxmlattr command.

       All files and directories in Gfarm file system can keep extended attributes.  When  removing  a  file  or
       directory, the associated extended attributes are also removed.

       Either -s, -g, -l, or -r option should be specified.

OPTIONS

       -s     sets  a  new value with an extended attribute xattrname for a specified file.  With the -f option,
              the value can be specified by the file xattrfile instead of by the standard input.   When  neither
              -c nor -m option is specified, the extended attribute is overwritten if it is already set.

       -g     reads a value with an extended attribute xattrname for a specified file.

       -l     display a list of extended attributes for a specified file.

       -r     removes a extended attribute xattrname for a specified file.

       -x     manipulates XML extended attributes.

       -c     sets a new extended attribute if it is not set.  This option is used with the -s option.

       -m     modifies the extended attribute if there it is.  This option is used with the -s option.

       -f xattrfile
              With  the  -s option, reads an extended attribute from the specified xattrfile instead of from the
              standard input.  With the -g option, writes the extended  attribute  to  the  specified  xattrfile
              instead of to the standard output.

       -?     displays usage.

SEE ALSO

       gffindxmlattr(1)

Gfarm                                            18 August 2009                                       GFXATTR(1)