How find a word

I need to find a word "GAIA_VECTORS_LIST_FAST" but I don't know exactly in what file it can be.

So apply this command in a bash :

find ./  -type f -exec grep "GAIA_VECTORS_LIST_FAST" {} \; -print

et voila.

The response is:

  list = gaiaGetVectorLayersList( handle, NULL, NULL, GAIA_VECTORS_LIST_FAST );
./src/providers/spatialite/qgsspatialiteconnection.cpp

simple and fast.