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

6       g.filename  - Prints GRASS data base file names.
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KEYWORDS

9       general, map management, scripts
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SYNOPSIS

12       g.filename
13       g.filename --help
14       g.filename  [-c] element=string file=string  [mapset=string]   [--help]
15       [--verbose]  [--quiet]  [--ui]
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17   Flags:
18       -c
19           Create element directory in the current mapset
20           If element directory for database file does not exist, create it
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22       --help
23           Print usage summary
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25       --verbose
26           Verbose module output
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28       --quiet
29           Quiet module output
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31       --ui
32           Force launching GUI dialog
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34   Parameters:
35       element=string [required]
36           Name of an element
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38       file=string [required]
39           Name of a database file
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41       mapset=string
42           Name of a mapset (default: current)
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DESCRIPTION

45       g.filename is designed for Bourne shell scripts that need to  know  the
46       full  file name, including it’s path, for mapset elements, like raster,
47       vector and site maps, region definitions and imagery groups.
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49       The list of element names to search for is not fixed; any  subdirectory
50       of the mapset directory is a valid element name.
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52       However, the user can find the list of standard GRASS GIS element names
53       in the file $GISBASE/etc/element_list. This is  the  file  which  g.re‐
54       move/g.rename/g.copy   use   to   determine  which  files  need  to  be
55       deleted/renamed/copied for a given entity type.
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OUTPUT

58       g.filename writes one line to standard output:
59       file=’full_file_pathname’ The output is a /bin/sh command  to  set  the
60       variable  specified by the file name to the full UNIX path name for the
61       data base file.  This variable may be set in the /bin/sh as follows:
62       eval `g.filename element=name mapset=name file=name`
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NOTES

65       This module generates the filename, but does not care if the  file  (or
66       mapset  or element) exists or not. This feature allows shell scripts to
67       create new data base files as well as use existing ones.
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69       If the mapset is the current mapset, g.filename can automatically  cre‐
70       ate  the  element specified if it doesn’t already exist when -c flag is
71       used. This makes it easy to add new files to the data base without hav‐
72       ing to worry about the existence of the required data base directories.
73       (This program will not create a new mapset, however, if that  specified
74       does not currently exist.)
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76       This  module  should not be used to create directories which are at the
77       level of what this module refer to as files, i.e., directory which car‐
78       ries a name specified by a user (such as vector map directories) should
79       not be created using this module.  Standard  library  functions  coming
80       with any given language are a more appropriate tool for that.
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82       The  program  exits  with  a  0  if  everything is ok;  it exits with a
83       non-zero   value   if   there   is   an   error,    in    which    case
84       file=’full_file_pathname’ is not output.
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SEE ALSO

87        g.findfile, g.gisenv
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AUTHOR

90       Michael Shapiro, U.S.Army Construction Engineering Research Laboratory
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SOURCE CODE

93       Available at: g.filename source code (history)
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95       Accessed: Saturday Jan 21 20:38:11 2023
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97       Main  index | General index | Topics index | Keywords index | Graphical
98       index | Full index
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100       © 2003-2023 GRASS Development Team, GRASS GIS 8.2.1 Reference Manual
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104GRASS 8.2.1                                                      g.filename(1)