The following is a list of environment variables used in GRASS. These variables were found by searching all *.c *.h files for the words "setenv" and "getenv" individually. Note that some of them are not yet found in the source code. These are indicated along with the date they were last checked (dd/mm/yy).
The second part lists GRASS related files.
export VARIABLE=value
or
setenv VARIABLE value
An alternate option is to use "g.gisenv" (within GRASS):
Use: g.gisenv set=VARIABLE=VALUE
It looks unusual with two equals signs, but g.gisenv does dual duty for getting and setting GRASS environment variables. If the user just specifies a variable name, it defaults to "get" mode. Example:
GRASS ~> g.gisenv GRASS_GUI
text
To permanently predefine GRASS environment variables the user may specify the variable(s) in the .grassrc5 file.
ANOTHER_BUTTON
[v.digit]
define to click conveniently for two button mouse.
It's hard to click two buttons simultaneously with two button
mouse,
#ifndef ANOTHER_BUTTON
# define MIDDLEB 2
# define RIGHTB
3
#else
# define MIDDLEB 3
# define RIGHTB
2
#endif
GRASS_BACKGROUNDCOLOR
[PNGdriver]
defines the background color of the image created by the PNG driver
BAUD
CMAP_SIZE
CODECENTER
DARKEN
DATABASE
DBMSCAP
[db.connect]
defines DBMI driver
DBPATH
DB_DATABASE
DB_DRIVER
DB_KEYCOL
DB_LOCATION
DB_PASSWORD
DB_USER
DEB
DEBUG
DIGITIZER
[v.digit]
name of currently selected digitizer board
DPG_LOCK
DUMP
ELEMENT_LIST
pathname of element list file to use instead of $GISBASE/etc/element_list
ENDPANEL
FORCE_GRASS3_COLORS
define to force color table output format in 3.0, even if the
structure
contains 4.0 rules
GRASS_FP_DOUBLE
define GRASS floating point type (DCELL_TYPE, FCELL_TYPE)
G3D_CACHE_SIZE_ENV_VAR
G3D_CACHE_SIZE_MAX_ENV_VAR
G3D_COMPRESSION_ENV_VAR_NO
G3D_COMPRESSION_ENV_VAR_YES
G3D_DEFAULT_WINDOW3D
G3D_FATAL_ERROR_ENV_VAR
G3D_FILE_DOUBLE_ENV_VAR
G3D_FILE_FLOAT_ENV_VAR
G3D_PRECISION_ENV_VAR
G3D_PRECISION_ENV_VAR_MAX
G3D_PRINT_ERROR_ENV_VAR
G3D_RLE_ENV_VAR_NO
G3D_RLE_ENV_VAR_YES
G3D_TILE_DIM_X_ENV_VAR
G3D_TILE_DIM_Y_ENV_VAR
G3D_TILE_DIM_Z_ENV_VAR
GDAL_HOME
GISBASE
directory where GRASS lives
GISDBASE
initial database
GISRC
name of .grassrc5 file
GIS_LOCK
lock ID to prevent parallel GRAS use,
process id of the start-up shell script
GMPEG_SIZE
GRAPH
HEIGHT
GRASS_ADDON_PATH
[grass5] startup script
allows to specify additional paths to local GRASS modules extra
to standard distribution
GRASS_GNUPLOT
[m.svfit, s.probplt, s.sv]
program to use for plotting "gnuplot" data
GRASS_GUI
either "text" or "tcltk" to define non-/graphical startup
GRASS_HEIGHT
[d.mon]
defines the height of GRASS monitor
GRASS_WIDTH
[d.mon]
defines the width of GRASS monitor
GTUNE_VSUP_RAM
GTUNE_VTOC_RAM
HOME
user's home directory
GRASS_HTMLFILE
GRASS_HTMLMAXPOINTS
GRASS_HTMLMINBBOX
GRASS_HTMLMINDIST
GRASS_HTMLTYPE
LOCATION
full path to location directory
LOCATION_NAME
initial location name
MAPLP
[ppm driver]
MAPSET
initial mapset
MONITOR
[d.mon]
name of selected GRASS monitor
NODUMP
NO_DRAW
NPIXELS
Nviz_AutoSurfColors
[nviz]
ORACLE_HOME
GRASS_PAGER
[various modules]
Maybe set to either "less" or "more"
PAINT
PAINTER
currently selected paint output device
PAINT_DRIVER
PAINT_DRIVER_SHELL
PAINT_HEADER
PAINT_TRACE
GRASS_ORGANIZATION
[various vector modules which generate new vector maps]
To set the owner of the vector map ("Organization"). Default
is "GRASS Development Team"
GRASS_PAN_THRESHOLD
[v.digit]
auto-pan moving speed. Auto panning can be set off by setting
GRASS_PAN_THRESHOLD=0
GRASS_PERL
set perl with path
PGSQL - not found in source 20/02/01
PG_HOST
[g.select.pg]
name of PostgreSQL host
PG_DBASE
[g.select.pg]
name of selected PostgreSQL database
GRASS_PNGFILE
[PNGdriver]
name of PNG output file
PREVIEW_BACKGROUND
PROJ_LIB
PSPAINTER
[ps.select]
naem of ps device to print to
PWAIT
QUALITY
RASTERFILE
SG3D_HEIGHT
[sg3d]
SG3D_SITE_CACHE
[sg3d]
SG3D_WIDTH
[sg3d]
SHORT
GRASS_SLEEP - not found in source 20/02/01
SPAG_THRESH
[v.spag]
snap threshold value
SPRINT_COMMAND
SQLBASE_DIR
SQLBASE_DRIVER_STDERR
SQLBASE_SERVER
STARTPANEL
GRASS_STDERR
set to prevent user mail on error
GRASS_TCLSH
[tcltkgrass, nviz]
set tclsh shell name to override 'tclsh'
TERM
current terminal type
GRASS_TEXT_BROWSER - not found in source 20/02/01
GRASS_TRANSPARENT
[PNGdriver]
if "TRUE", the image created by the PNG driver will have a transparent background
GRASS_TRUECOLOR
[PNGdriver]
if "TRUE", the PNG driver generates a true-color image (requires GD 2.0)
USER
WIDTH
GRASS_WISH
[tcltkgrass, nviz]
set wish shell name to override 'wish'
WRITE
X3D_HEIGHT
X3D_WIDTH
XDRIVER_PRIVATE_CMAP
[d.mon]
if set, use a private colormap
XDRIVER_WINDOW
[d.mon]
if set, should contain an X window ID; XDRIVER will use this window instead of creating its own
XGANIM_SIZE
_XPG
$HOME/.grassrc5
$HOME/.tcltkgrass
GIS_ERROR_LOG
If this file exists, all GRASS error messages are stored here
instead of sending a mail to the GIS user. To generate the file, use:
touch GIS_ERROR_LOG