I want to use the r.stream.distance addon in GRASS GIS 6.4 on ubuntu 10.04 (64 bit).
I've installed grass from the repositories and that works fine but I can't seem to figure out how to install this addon (or any other for that matter).
I've tried to run g.extension but I get a "command not found" error. I've tried to install the addon from svn but the instructions are less than clear to me.
I've read through the documentation on the grass wiki and it seems to assume a lot of knowledge that I seem to lack.
So, does anyone know of a tutorial where I can walk through the steps (baby steps) of installing an addon in grass?