Convert Binary Ring to Text

convert_binary_ring.sh

#!/usr/bin/env escript
%% -*- erlang -*-
%%! -smp enable -sname convert_binary_ring -mnesia debug verbose

main([RingFile, OutFile]) ->
    try
		{ok, Binary} = file:read_file(RingFile), 
		Ring = binary_to_term(Binary),
		try
			file:write_file(OutFile, io_lib:format("~p.~n", [Ring])),
			io:format("Saved ~p to ~p.~n", [RingFile, OutFile])
		catch
			A:B ->
				io:format("Exception ~p:~p~n",[A,B])
		end
    catch
        _:_ ->
            usage()
    end;

main([RingFile]) ->
	main([RingFile, lists:append(RingFile,".txt")]);

main(_) ->
    usage().

usage() ->
    io:format("usage: convert_binary_ring RingFile [OutputFile]\n"),
    halt(1).