Comparing version 3 and version 2 back

h1. Random Erlang Pieces of Code

h2. Add directory to the binaries search path

Add these lines to your _~/.erlang_

code:add_path("/ebin").
code:add_path("/ebin").


h2. Spawn process on another node

remote$ % cat dummy.erl
-module(dummy).
-export([loop/0]).

loop() ->
  receive
    {Node, Msg} ->
       io:format("~s : ~s~n", [Node, Msg]),
       loop();
     _ -> io:format('not defined~n')
  end.

remote$ erl -sdummy
dummy@remote> c(dummy).

local$ erl -sname hello
hello@local> Node = 'dummy@remote'.
hello@local> net_adm:ping(Node).
%% Format: Pid = spawn(Node, mod_name, func_name, [arg1,arg2]).
hello@local> Pid = spawn(Node, dummy, loop, []).
hello@local> Pid ! {self(), 'Hello'}.


h2. Convert command line argument to integer


-module(dummy).
-export([main/1]).

main([Arg|_]) ->
  Val = list_to_integer(atom_to_list(Arg)),
  ...

host$ erl -noshell -s dummy main 1000 -s init stop