$ sudo port install erlang
Password:
---> Fetching gawk
---> Attempting to fetch gawk-3.1.6.tar.bz2 from ftp://ftp.dti.ad.jp/pub/GNU/gawk
---> Verifying checksum(s) for gawk
---> Extracting gawk
---> Configuring gawk
---> Building gawk
---> Staging gawk into destroot
---> Installing gawk @3.1.6_0
---> Activating gawk @3.1.6_0
---> Cleaning gawk
---> Fetching erlang
---> Attempting to fetch otp_src_R12B-5.tar.gz from http://distfiles.macports.org/erlang
---> Attempting to fetch otp_doc_man_R12B-5.tar.gz from http://distfiles.macports.org/erlang
---> Attempting to fetch otp_doc_html_R12B-5.tar.gz from http://distfiles.macports.org/erlang
---> Verifying checksum(s) for erlang
---> Extracting erlang
---> Applying patches to erlang
---> Configuring erlang
---> Building erlang
---> Staging erlang into destroot
---> Installing erlang @R12B-5_1
---> Activating erlang @R12B-5_1
---> Cleaning erlang
$ erl
Erlang (BEAM) emulator version 5.6.5 [source] [async-threads:0] [hipe] [kernel-poll:false]
Eshell V5.6.5 (abort with ^G)
1> X=1.
1
2> X.
1
3> X=2.
** exception error: no match of right hand side value 2
4> $H.
72
5> $e.
101
6> $l.
108
7> $o.
111
8> [72, 101, 108, 108, 111]
8> .
"Hello"
9>
