NAME

       g.filename  - Prints GRASS data base file names.

KEYWORDS

       general, map management

SYNOPSIS

       g.filename
       g.filename help
       g.filename element=string file=string  [mapset=string]   [--verbose]  [--quiet]

   Parameters:
       element=string
           Name of an element

       file=string
           Name of a database file

       mapset=string
           Name of a mapset (default: current)

DESCRIPTION

       g.filename  is  designed  for  Bourne  shell scripts that need to know the full file name, including it's
       path, for mapset elements, like raster, vector and site maps, region definitions and imagery groups.

       The list of element names to search for is not fixed; any subdirectory of the mapset directory is a valid
       element name.

       However,  the  user   can   find   the   list   of   standard   GRASS   element   names   in   the   file
       $GISBASE/etc/element_list.  This  is the file which g.remove/g.rename/g.copy use to determine which files
       need to be deleted/renamed/copied for a given entity type.

OUTPUT

       g.filename writes one line to standard output: file='full_file_pathname'

       The output is a /bin/sh command to set the variable specified by the file name to the full UNIX path name
       for the data base file.  This variable may be set in the /bin/sh as follows:
       eval `g.filename element=name mapset=name file=name`

NOTES

       This routine generates the filename, but does not care if the file (or mapset or element) exists or  not.
       This feature allows shell scripts to create new data base files as well as use existing ones.

       If the mapset is the current mapset, g.filename automatically creates the element specified if it doesn't
       already  exist.   This  makes it easy to add new files to the data base without having to worry about the
       existence of the required data base directories.  (This program will not create a new mapset, however, if
       that specified does not currently exist.)

       The program exits with a 0 if everything is ok;  it exits with a non-zero value if there is an error,  in
       which case file='full_file_pathname' is not output.

SEE ALSO

       g.ask
       g.findfile
       g.gisenv
       parser

AUTHOR

       Michael Shapiro, U.S.Army Construction Engineering Research Laboratory

       Last changed: $Date: 2011-11-08 03:29:50 -0800 (Tue, 08 Nov 2011) $

       Full index

       © 2003-2013 GRASS Development Team

GRASS 6.4.3                                                                                   g.filename(1grass)