Is there a keyboard or command shortcut in GRASS for importing vector files? If you know link where I can find maybe whole list of shortcuts for GRASS, that would be awesome.
More info here: http://grass.osgeo.org/grass64/manuals/html64_user/v.in.ogr.html
Here is an example (from the above link) for importing a shapefile:
v.in.ogr dsn=/home/user/shape_data layer=test_shape output=grass_map
The GRASS commands are listed in the online manuals here: http://grass.osgeo.org/gdp/manuals.php
You can also use the gui tools through Quantum GIS or by doing the command without any parameters (v.in.ogr). I've found it useful to play with all of the parameters within the GRASS gui and watch as the parameters are filled in.
The graphical user interface also support bulk import:
You may like this video about importing multiple shapefiles