Erlang documentation in pdf
can be found here: http://erlang.org/doc/pdf/
And this will bring it to a directory near you:
mkdir erlang-docs && cd erlang-docs
wget -nH -nd -r -l 1 http://erlang.org/doc/pdf/
And this will bring it to a directory near you:
mkdir erlang-docs && cd erlang-docs
wget -nH -nd -r -l 1 http://erlang.org/doc/pdf/