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g.filename(1) GRASS GIS User's Manual g.filename(1)

g.filename - Prints GRASS data base file names.

general, map management, scripts

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

--help

Print usage summary
--verbose

Verbose module output
--quiet

Quiet module output
--ui

Force launching GUI dialog

element=string [required]

Name of an element
file=string [required]

Name of a database file
mapset=string

Name of a mapset (default: current)

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.remove/g.rename/g.copy use to determine which files need to be deleted/renamed/copied for a given entity type.

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`

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 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.

g.findfile, g.gisenv

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

Available at: g.filename source code (history)

Main index | General index | Topics index | Keywords index | Graphical index | Full index

© 2003-2021 GRASS Development Team, GRASS GIS 7.8.6 Reference Manual

GRASS 7.8.6

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