Access to the Mnesia node from another Erlang shell during its launch

Question

What is the best practice of accessing one running mnesia node from another Erlang shell to view only data in tables?

I tried opening two shells and directing them to the same place in the mnesia directory, which, as I understand it, was a very bad idea after discovering this in the documentation.

-mnesia dir Directory. The name of the directory in which all Mnesia data is stored. The directory name must be unique for the current node. Two nodes may under no circumstances use the same Mnesia directory. The results are completely unpredictable.

Answer 1

, - . erl -remsh Node

$ erl -sname foo
Erlang R13B04 (erts-5.7.5) [source] [smp:2:2] [rq:2] [async-threads:0] [hipe] [kernel-poll:false]

Eshell V5.7.5  (abort with ^G)
(foo@hynek-notebook)1> 

:

$ erl -sname bar -remsh 'foo@hynek-notebook'
Erlang R13B04 (erts-5.7.5) [source] [smp:2:2] [rq:2] [async-threads:0] [hipe] [kernel-poll:false]

Eshell V5.7.5  (abort with ^G)
(foo@hynek-notebook)1> 

erl ( ^G)

$ erl -sname bar
Erlang R13B04 (erts-5.7.5) [source] [smp:2:2] [rq:2] [async-threads:0] [hipe] [kernel-poll:false]

Eshell V5.7.5  (abort with ^G)
(bar@hynek-notebook)1> 
User switch command
 --> h
  c [nn]            - connect to job
  i [nn]            - interrupt job
  k [nn]            - kill job
  j                 - list all jobs
  s [shell]         - start local shell
  r [node [shell]]  - start remote shell
  q        - quit erlang
  ? | h             - this message
 --> r 'foo@hynek-notebook'
 --> j
   1  {shell,start,[init]}
   2* {'foo@hynek-notebook',shell,start,[]}
 --> c 
Eshell V5.7.5  (abort with ^G)
(foo@hynek-notebook)1> 
User switch command
 --> j
   1  {shell,start,[init]}
   2* {'foo@hynek-notebook',shell,start,[]}
 --> c 1

(bar@hynek-notebook)1>

, Enter, , .