## DESCRIPTION

The g.gui module allows user to start the Graphical User Interface (GUI) from the command line prompt or to change the default User Interface (UI) settings.

GRASS GIS 7 comes with both a wxPython-based GUI aka wxGUI (ui=wxpython) and command line text-based UI (ui=text).

## NOTES

If the -d update flag is given or the `GRASS_GUI` environmental variable is unset, then the GRASS internal variable `GUI` is permanently changed and the selected ui will be used as the default UI from then on.

All GRASS internal variables (see g.gisenv) are stored in the user's home directory in a hidden file called `$HOME/.grass7/rc` on Unix-based operating systems and `%APPDATA%\GRASS7\rc` on MS Windows. Note that these GRASS internal variables are not the shell environment variables and the `rc` file is not a classic UNIX run command file, it just contains persistent GRASS variables.

The old gis.m and d.m Tcl/Tk-based GUIs known from GRASS GIS 6 have been dropped in GRASS GIS 7.

## EXAMPLES

Set default user interface setting to command line, text-based UI:

    g.gui -d ui=text

Set default user interface setting to the graphical user interface (GUI) and launch the GUI:

    g.gui -d ui=wxpython

Set default user interface setting to the graphical user interface (GUI) but do not launch the GUI:

    g.gui -dn ui=wxpython

## SEE ALSO

wxGUI, g.gisenv, GRASS variables

wxGUI wiki page

## AUTHORS

Martin Landa, FBK-irst, Trento, Italy
Hamish Bowman, Otago University, Dunedin, New Zealand (fine tuning)