todo.ex

unless File.exists?("~/.todos/"), do: File.mkdir!("~/.todos/")

case System.argv() do
  ["all"] ->
    if (files = File.ls!("~/.todos/")) == [],
      do: IO.puts("No todos."),
      else: Enum.each(files, &IO.puts("- #{&1}\n#{File.read!("#{"~/.todos/"}#{&1}")}\n"))

  ["create", todo] ->
    File.write!("#{"~/.todos/"}#{:os.system_time(:second)}", todo) && IO.puts("📝")

  [action, id] when action in ~w(complete delete) ->
    File.rm!("#{"~/.todos/"}#{id}") && IO.puts(if action == "delete", do: "🗑️", else: "✅")

  _else ->
    IO.puts("watcha talkin bout willis")
end

How do i run this?

elixir todo.ex all