<div style="line-height:1.7;color:#000000;font-size:14px;font-family:Arial"><div>Thanks, it is very helpful.</div><div>Now I added a module dummy_proj and the start function is implemented, finally it's working by </div><div><span style="color: rgb(0, 0, 255); line-height: 23.7999992370605px;">$ erl -pa apps/ebin/ -boot start_sasl -s dummy_proj</span></div><div><span style="color: rgb(0, 0, 255); line-height: 23.7999992370605px;"><br></span></div><div><span style="color: rgb(0, 0, 0); line-height: 23.7999992370605px;">But personally I do not want to add a entire new module just for this purpose, So I tried something else.</span></div><div>However, another problem shows up, that when I start erl shell by </div><div><span style="color: rgb(0, 0, 255); line-height: 23.7999992370605px;">$ erl -pa apps/ebin/ -boot start_sasl -</span><span style="color: rgb(0, 0, 255); line-height: 23.7999992370605px;">s application start dummy_proj</span></div><div>or</div><div><span style="color: rgb(0, 0, 255); line-height: 23.7999992370605px;">$ erl -pa apps/ebin/ -boot start_sasl -</span><span style="color: rgb(0, 0, 255); line-height: 23.7999992370605px;">s application ensure_all_started dummy_proj</span></div><div></div><div id="divNeteaseMailCard"></div><div>Nothing will go wrong but application dummy_proj will not be started at the same time.</div><div>On the other hand, if I try </div><div><span style="line-height: 23.7999992370605px; color: rgb(0, 0, 255);">$ erl -pa apps/ebin/ -boot start_sasl -</span><span style="line-height: 23.7999992370605px; color: rgb(0, 0, 255);">s appmon start</span></div><div>the AppMon tool will be started as expected.</div><div><br></div><div>That's to say the application:start(dummy_proj) was called, but nothing happened.</div><div>It's weird.</div><div><br></div><div>Best wishes.</div><div>zhangguofu (Gary)</div><div><br></div>在 2014-10-22 15:13:24，"T Ty" <tty.erlang@gmail.com> 写道：<br> <blockquote id="isReplyContent" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid"><div dir="ltr">According to the Erlang documentation <div><br></div><div><a href="http://erlang.org/doc/man/erl.html">http://erlang.org/doc/man/erl.html</a> when you call<br></div><div><br></div><div> erl -s module</div><div><br></div><div>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.</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Tue, Oct 21, 2014 at 11:48 PM, Jay Doane <span dir="ltr"><<a href="mailto:jay@almery.com" target="_blank">jay@almery.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">I believe this line<span class=""><div><br></div><div><span style="color:rgb(255,0,0);font-family:Arial;font-size:14.3999996185303px;line-height:19.0399990081787px">{"init terminating in do_boot",{undef,[{dummy_proj,</span><span style="color:rgb(255,0,0);font-family:Arial;font-size:14.3999996185303px;line-height:19.0399990081787px">start,[],[]},{init,start_it,1,</span><span style="color:rgb(255,0,0);font-family:Arial;font-size:14.3999996185303px;line-height:19.0399990081787px">[]},{init,start_em,1,[]}]}}</span><br></div><div><br></div></span><div>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:</div><div>-export([start/1]).</div><div>start() -><br></div><div> application:ensure_all_started(dummy_proj).</div><div><br></div></div><div class="gmail_extra"><br><div class="gmail_quote"><div><div class="h5">On Tue, Oct 21, 2014 at 1:33 PM, 张国富 <span dir="ltr"><<a href="mailto:cleancode@163.com" target="_blank">cleancode@163.com</a>></span> wrote:<br></div></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div class="h5"><div style="line-height:1.7;color:#000000;font-size:14px;font-family:Arial"><div>Hello all,</div><div>I'm now following a Erlang rebar tutorial at <a href="http://www.metabrew.com/article/erlang-rebar-tutorial-generating-releases-upgrades" target="_blank">http://www.metabrew.com/article/erlang-rebar-tutorial-generating-releases-upgrades</a>, the test application can be started inside the erlang shell, like</div><div><span style="color:rgb(0,0,255)">$ erl -pa apps/ebin/ -boot start_sasl</span></div><div><div><span style="color:rgb(0,0,255)">1> application:start(dummy_proj). </span></div><div><span style="color:rgb(0,0,255)">=PROGRESS REPORT==== 21-Oct-2014::21:16:13 ===</span></div><div><span style="color:rgb(0,0,255)"> application: dummy_proj</span></div><div><span style="color:rgb(0,0,255)"> started_at: nonode@nohost</span></div><div><span style="color:rgb(0,0,255)">ok</span></div><div><span style="color:rgb(0,0,255)">2> dummy_proj_server:poke().</span></div><div><span style="color:rgb(0,0,255)">{ok,1}</span></div></div><div>but it can not be started this way</div><div><div><span style="color:rgb(0,0,255)">$ erl -pa apps/ebin/ -boot start_sasl -</span><span style="color:rgb(255,0,0)">s dummy_proj</span></div><div><span style="color:rgb(0,0,255)">Erlang R16B03 (erts-5.10.4) [source] [smp:4:4] [async-threads:10] [kernel-poll:false]</span></div><div><span style="color:rgb(0,0,255)">.... <skip> .....</span></div><div><span style="color:rgb(0,0,255)">=PROGRESS REPORT==== 21-Oct-2014::21:17:23 ===</span></div><div><span style="color:rgb(0,0,255)"> application: sasl</span></div><div><span style="color:rgb(0,0,255)"> started_at: nonode@nohost</span></div><div><span style="color:rgb(255,0,0)">{"init terminating in do_boot",{undef,[{dummy_proj,start,[],[]},{init,start_it,1,[]},{init,start_em,1,[]}]}}</span></div><div><div><span style="color:rgb(0,0,255)">Crash dump was written to: erl_crash.dump</span></div><div><span style="color:rgb(0,0,255)">init terminating in do_boot ()</span></div></div></div><div><br></div><div><span style="color:rgb(0,0,0)">It seems Erlang is trying to call </span><span style="color:rgb(0,0,255)">dummy_proj:start()</span><span style="color:rgb(0,0,0)">, but I can not understand why.</span></div><div><span style="color:rgb(0,0,0)">Anybody who ever encountered the same problem here? How can I make it work?</span></div><div><br></div><div><font color="#0000ff"><span style="color:rgb(0,0,0)">Thanks.</span></font></div><div><font color="#0000ff"><br></font></div><div><font color="#0000ff"><span style="color:rgb(0,0,0)">Best wishes</span></font></div><div><font color="#0000ff"><br></font></div><div><font color="#0000ff"><span style="color:rgb(0,0,0)">zhangguofu(Gary)</span></font></div><div><br></div><div><br></div></div><br><br><span title="neteasefooter"><span></span></span><br></div></div>_______________________________________________<br>
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