[erlang-questions] Appearance of carriage return in a erlang.log on UNIX

Valentin Kuznetsov vkuznet@REDACTED
Sun Mar 10 20:48:26 CET 2013

the application does use error_logger and the erlang.log.1 file contains proper lines from the logger, e.g.

=INFO REPORT==== 9-Mar-2013::20:55:05 ===^M
<0.818.0> Listening on 10190.^M
Eshell V5.9.3  (abort with ^G)^M
(urlfetchd@REDACTED)1> ^M
=INFO REPORT==== 9-Mar-2013::20:55:31 ===^M
<0.838.0> Client {127,0,0,1} connected.^M

The release log area has the following content:

erlang.log.1  run_erl.log  sasl  sasl-error.log

The sasl-error.log contains proper content too, e.g.

=SUPERVISOR REPORT==== 10-Mar-2013::18:29:44 ===
     Supervisor: {local,ssl_connection_sup}
     Context:    child_terminated
     Reason:     ekeyfile
     Offender:   [{pid,<0.1016.0>},
                  {name,undefined},                  {mfargs,{ssl_connection,start_link,undefined}},
                  {shutdown,4000},                  {child_type,worker}]

but it does not have '\r' symbols.

The erlang.log.1 is not yet rotated since I only perform a few actions with my application.

On Mar 10, 2013, at ,Mar 10, 3:29 PM, Antoine Koener wrote:

> Erlang doesn't have a clue about your .1 file.
> See more about your log rotation program.
> Also your log file doesn't look like a sasl or error logger file...
> On Sunday, March 10, 2013, Valentin Kuznetsov wrote:
> Hi,
> I built OTP application using rebar build tool and when I'm running on UNIX systems (both OSX and Linux) I see that created erlang.log.1 file has dos '\r' carriage return symbols in every line. I look-up on a web and did not find any reference about such behavior. I'll appreciate any suggestions why this happens (I don't think it's related to my application per-se and rather feel that it's somehow introduced by rebar, but I'm not sure). The carriage return symbols appears right after logging started message and follow up ever line after that. Here is an example of the head of my log.
> =====
> ===== LOGGING STARTED Sat Mar  9 20:55:02 EST 2013
> =====
> Exec: /Users/vk/Work/Languages/Erlang/urlfetch/rel/urlfetchd/erts-5.9.3/bin/erlexec -boot /Users/vk/Work/Languages/Erlang/urlfetch/rel/urlfetchd/releases/1/urlfetchd -mode embedded -config /Users/vk/Work/Languages/Erlang/urlfetch/rel/urlfetchd/etc/app.config -args_file /Users/vk/Work/Languages/Erlang/urlfetch/rel/urlfetchd/etc/vm.args -- console^M
> Root: /Users/vk/Work/Languages/Erlang/urlfetch/rel/urlfetchd^M
> Erlang R15B03 (erts-5.9.3) [source] [64-bit] [smp:2:2] [async-threads:5] [hipe] [kernel-poll:true]^M
> ^M
> ^M
> Thanks,
> Valentin.
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