

r.stats - 

r.stats calculates the area present in each of the \categories\ of
user-selected \raster\ map layer(s).  Area statistics can be given in
units of acres, hectares, square miles and \cell\ counts.  This
analysis uses the current \geographic region\ and \mask\ settings.
Output can be sent to a file in the user's current working directory.

Manual entry for \r.stats\
