erl_isatty - Erlang NIF wrapper for unix 'int isatty(int)' Spec -spec isatty(FD::integer()) -> boolean(). Will crash with badarg if FD is not integer() between -2 bsl 30 and +2 bsl 30-1. Example usage erl_isatty:isatty(1). % -> true License Apache license version 2.0. See the LICENSE file for details.