uncompress raster

Try "r.compress -u <raster_map>"

I would like to use a raster map as input to another program that is
not a part of GRASS. However, the file is compressed. I have tried unix
uncompress without success and changing hte header file to try to
force the file to uncompress.

So does anyone know how to uncompress a raster file?

thanks
edwin@hwr.arizona.edu