g.filename(1grass) GRASS GIS User's Manual g.filename(1grass)
NAME
g.filename - Prints GRASS data base file names.
KEYWORDS
general, map management, scripts
SYNOPSIS
g.filename
g.filename --help
g.filename element=string file=string [mapset=string] [--help]
[--verbose] [--quiet] [--ui]
Flags:
--help
Print usage summary
--verbose
Verbose module output
--quiet
Quiet module output
--ui
Force launching GUI dialog
Parameters:
element=string [required]
Name of an element
file=string [required]
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 GIS element names
in the file $GISBASE/etc/element_list. This is the file which g.re-
move/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 module 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 ex-
istence of the required data base directories. (This program will not
create a new mapset, however, if that specified does not currently ex-
ist.)
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.findfile, g.gisenv
AUTHOR
Michael Shapiro, U.S.Army Construction Engineering Research Laboratory
SOURCE CODE
Available at: g.filename source code (history)
Accessed: unknown
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GRASS 7.8.7 g.filename(1grass)
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