[Nut-upsuser] how to install NUT on raspberry pi

[flavio]

Hi Steve.
Thanks for your tutorial.
I was following on my raspberry pi with raspbian os.
i have an error, when i run " sudo ln -s /usr/bin/autom4te 
/usr/local/bin/autom4te " i have this error messagge " ln: failed to 
create symbolic link `/usr/local/bin/autom4te': File exists ". 
Sorry but i'm not an expert as you....
How can i fix it?
It's important?

Thanks!