after trying to get lessc working following the post http://ken.edmonds-commerce.co.uk/css/four-commands-away-from-installing-less-css-on-ubuntu/ with no luck i finally managed it as follows (and as i just notices these are also only four command) …
sudo aptitude install git nodejs sudo git clone https://github.com/cloudhead/less.js.git /opt/lessc
open your .bashrc file using the command
and add the following new line to make lessc work
alias lessc='nodejs /opt/lessc/bin/lessc'
as the alias takes no effect in the opened terminal open a new terminal and it will work