Need for command line version of r.mask in GRASS4.0

[Greg Koerper]

> I am needing a command line version of r.mask.
> 
> Does such a beast exist.  Any help would be appreciated.
> 
> Thanks
> Steffen Meyer
> 
> Steffen Meyer, PE    Water Resource Engineer, Civil Engineering
> Graduate Student in Water Resources,  Colorado State University
> EMail: sm646601 at lance.colostate.edu
> 
Yes, it does:

g.copy ras=<raster name>,MASK

and 

g.remove ras=MASK