[erlang-questions] Application can not be started

[T Ty]

According to the Erlang documentation

http://erlang.org/doc/man/erl.html when you call

    erl -s module

And no other arguments provided it defaults to Func "start" and if no
arguments are provided, the function is assumed to be of arity 0.

On Tue, Oct 21, 2014 at 11:48 PM, Jay Doane <jay@REDACTED> wrote:

> I believe this line
>
> {"init terminating in do_boot",{undef,[{dummy_proj,
> start,[],[]},{init,start_it,1,[]},{init,start_em,1,[]}]}}
>
> indicates that the function start/0 is not defined in module dummy_proj,
> so if you want to start it like that on the command line, you could try
> adding something like the following to dummy_proj.erl:
> -export([start/1]).
> start() ->
>     application:ensure_all_started(dummy_proj).
>
>
> On Tue, Oct 21, 2014 at 1:33 PM, 张国富 <cleancode@REDACTED> wrote:
>
>> Hello all,
>> I'm now following a Erlang rebar tutorial at
>> http://www.metabrew.com/article/erlang-rebar-tutorial-generating-releases-upgrades,
>> the test application can be started inside the erlang shell, like
>> $ erl -pa apps/ebin/ -boot start_sasl
>> 1> application:start(dummy_proj).
>> =PROGRESS REPORT==== 21-Oct-2014::21:16:13 ===
>>          application: dummy_proj
>>           started_at: nonode@REDACTED
>> ok
>> 2> dummy_proj_server:poke().
>> {ok,1}
>> but it can not be started this way
>> $ erl -pa apps/ebin/ -boot start_sasl -s dummy_proj
>> Erlang R16B03 (erts-5.10.4) [source] [smp:4:4] [async-threads:10]
>> [kernel-poll:false]
>> .... <skip> .....
>> =PROGRESS REPORT==== 21-Oct-2014::21:17:23 ===
>>          application: sasl
>>           started_at: nonode@REDACTED
>> {"init terminating in
>> do_boot",{undef,[{dummy_proj,start,[],[]},{init,start_it,1,[]},{init,start_em,1,[]}]}}
>> Crash dump was written to: erl_crash.dump
>> init terminating in do_boot ()
>>
>> It seems Erlang is trying to call dummy_proj:start(), but I can not
>> understand why.
>> Anybody who ever encountered the same problem here? How can I make it
>> work?
>>
>> Thanks.
>>
>> Best wishes
>>
>> zhangguofu(Gary)
>>
>>
>>
>>
>>
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>>
>>
>
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