What is the correct way to pass command line options?

Questions & Help Questions
3

Hello,

You need escript for this job for example in your mix.exs you must pass

escript: [main_module: MyApp]

then in your module define something like this:

defmodule MyApp do
 def main(args) do
  args |> parse_args |> process
 end

def process([]) do
 IO.puts "No arguments given"
end

def process(options) do
 IO.puts "Hello #{options[:name]}"
end

 defp parse_args(args) do
  {options, _, _} = OptionParser.parse(args, switches: [name: :string])
  options
 end
end

finally from the command line:

mix escript.build
$ ./my_app --name=Elixir