cd ~/.rvm/gems/ruby-2.4.1@ushuaia/bin gem install sass
rvm ruby-2.4.1@ushuaia do gem install executable-hooks
export PATH="$PATH:$HOME/.rvm/bin"
[[ -s "$HOME/.rvm/scripts/rvm" ]] && source "$HOME/.rvm/scripts/rvm" # Load RVM into a shell session as a function