What is erlang? Why should you use it? by Developer
You can download it at any time from the official erlang site, or consult one of the cleaner alternative sites. If you're using portmaster, you can do portmaster lang/erlang. For standard ports, it should be cd /usr/ports/lang/erlang; make install clean. Finally, if you want to use packages, run pkg_add -rv erlang. Following picture depicts how use cd to change the current path. It also shows how ...