[GRASS-user] Using g.extension on Ubuntu 11.04

[Thomas.Adams at noaa.gov]

All:

At the GRASS 6.4.1 prompt, when I type:

g.extension extension=v.strahler

v.strahler is retrieved successfully and compiles, but then I get the message:

Installing <v.strahler>...
You need to enter the root password next to install v.strahler:
Password: 

The problem is, Ubuntu does not allow a root password (I don't have one) and of course my password is not acceptable. If, instead, I try:

sudo g.extension extension=v.strahler

I get the message:

GRASS 6.4.1 (ffpi):~/grass/data > sudo g.extension extension=v.strahler
[sudo] password for teaiii: 
sudo: g.extension: command not found

I'm at a loss what to do. Any suggestions?

Regards,
Tom