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)