gistfile1.txt

% iex --erl "-kernel shell_history enabled -kernel shell_history_path \"/Users/chris/.iex-history\""
Erlang/OTP 20 [erts-9.0] [source] [64-bit] [smp:4:4] [ds:4:4:10] [async-threads:10] [hipe] [kernel-poll:false] [dtrace]

Interactive Elixir (1.4.5) - press Ctrl+C to exit (type h() ENTER for help)
iex(1)>
BREAK: (a)bort (c)ontinue (p)roc info (i)nfo (l)oaded
       (v)ersion (k)ill (D)b-tables (d)istribution
^C%

% export ERL_AFLAGS="-kernel shell_history enabled -kernel shell_history_path \"/Users/chris/.iex-history\""
% iex
2017-06-23 15:53:31 application_controller: ~ts: ~ts~n
	["syntax error before: ","'/'"]
	"/Users/chris/.iex-history"
{"could not start kernel pid",application_controller,"{bad_environment_value,\"/Users/chris/.iex-history\"}"}
could not start kernel pid (application_controller) ({bad_environment_value,"/Users/chris/.iex-history"})