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Module help

Use module_name help to show help.

$ r.in.gdal help
Imports raster data into a GRASS raster map using GDAL library.

Usage:
 r.in.gdal [-ojeflakcrp] input=name output=name
   [band=value[,value,...]] [memory=memory in MB] [target=name]
   [title=phrase] [offset=value] [num_digits=value] [map_names_file=name]
   [location=name] [table=file] [gdal_config=string] [gdal_doo=string]
   [--overwrite] [--help] [--verbose] [--quiet] [--ui]

Flags:
  -o   Override projection check (use current location's projection)
  -j   Perform projection check only and exit
  -e   Extend region extents based on new dataset
  -f   List supported formats and exit
  -l   Force Lat/Lon maps to fit into geographic coordinates (90N,S; 180E,W)
  -a   Auto-adjustment for lat/lon
  -k   Keep band numbers instead of using band color names
  -c   Create the location specified by the "location" parameter and exit. Do not import the raster file.
  -r   Limit import to the current region
  -p   Print number of bands and exit

Parameters:
           input   Name of raster file to be imported
          output   Name for output raster map
            band   Band(s) to select (default is all bands)
          memory   Maximum memory to be used (in MB)
                   default: 300
          target   Name of GCPs target location
           title   Title for resultant raster map
          offset   Offset to be added to band numbers
                   default: 0
      num_digits   Zero-padding of band number by filling with leading zeros up to given number
                   default: 0
  map_names_file   Name of the output file that contains the imported map names
        location   Name for new location to create
           table   File prefix for raster attribute tables
     gdal_config   GDAL configuration options
        gdal_doo   GDAL dataset open options

Module manual

Use g.manual module_name to display the manual page in the browser.

$ g.manual r.in.gdal

Module GUI

You are not familiar with the command line or typing, and want to use the Graphical User Interface (GUI)? Most modules will start the GUI when no options are given, but some that do not require any options will just run without opening the GUI. In this case, use the --ui flag.

$ r.in.gdal --ui
$ r.in.gdal