Cannot use command line Elixir mix (macOS High Sierra)

Question

When i run command elixir -v or mix , it will return:

{"init terminating in do_boot",{undef,[{elixir,start_cli,[],[]},{init,start_em,1,[]},{init,do_boot,3,[]}]}}

Crash dump is being written to: erl_crash.dump...done
init terminating in do_boot ()

Some details:

$ brew list
elixir erlang ...

$ erl
Erlang/OTP 19 [erts-8.0] [source-6dc93c1] [64-bit] [smp:4:4] [async-threads:10] [hipe] [kernel-poll:false] Eshell V8.0 (abort with ^G) 1>

$ elixir
Usage: elixir [options] [.exs file] [data] -e COMMAND Evaluates the given command (*) -r FILE Requires the given files/patterns (*) ...

I have used brew uninstall, reinstall, but nothing change. Please help me fix it!

Answer 1

erl without any arguments will run Erlang shell. But if you want to run Elixir shell you should try running iex (interactive elixir). elixir is used to run programs you already coded, like elixir simple.exs

Or it might be that your Erlang version is little out of date. Try running brew update .