$ erl
Erlang R15B01 (erts-5.9.1) [source] [64-bit] [smp:4:4] [async-threads:0]
[kernel-poll:false]

Eshell V5.9.1  (abort with ^G)
1> A = 2 + 2.
4
2> 

Integer
	123456789

Floats
	3.14

Atome 
	januar, februar, true, false

Tupel 
	shape1 = {square, 4}
	shape2 = {circle, 5}

Listen
	Y = ["foo", 9.5, {tuple, tuple}, [1, 2]].
	X = [1, 2, 3].
	"AB" = [65, 66]

1> math:fakultaet(3).
6
ok
2>

-module(math).
-export([fakultaet/1]).
		
fakultaet(0) -> 1;
fakultaet(N) -> N * fakultaet(N-1).

processPacket(<<1:32/big, Rest>>) −> 
	% process packets of type one
	...
;
processPacket(<<2:32/big, Rest>>) −> 
	% process packets of type two
	...
;

httpGET(<<"GET / HTTP/1.1">>) -> ...;

processPacket(<< IP_VERSION:4, HLen:4, SrvcType:8, TotLen:16,
ID:16, Flgs:3, FragOff:13, TTL:8, Proto:8, HdrChkSum:16,
SrcIP:32, DestIP:32, RestDgram/binary >>) -> ... ;

Pid = spawn(Function).

Pid ! Message.
Pid ! {sender, do_task, notifyAll}

Calculator = spawn(calculator).
Calculator ! {self(), increment, 5}.

calculator() ->
  receive
    {From, increment, Value} -> From ! Value + 1;

    {From, decrement, Value} -> From ! Value - 1;

    _ -> io:format("unknown operation")
  end.

3> Calculator = spawn(calculator).
4> Calculator ! {self(), increment, 5}.
6
ok

$ erl -name node0 -setcookie "node-group1"

{process1, node1@localhost} ! your_message.
{process1, node1@uni-ulm.de} ! your_message.

2> Service = spawn(ServiceFunction).
3> Service ! {get_price, milk}.
The price of milk is: $0.99

4> c(pricing_service).
{ok,pricing_service}
5> Service ! {price, milk}.
The price of milk is: $1.03