added first builtin

corrected binary execution + added echo

tests/main.c

@@ -0,0 +1,36 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   main.c                                             :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: tmaze <tmaze@student.42.fr>                +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2018/11/23 14:24:53 by tmaze             #+#    #+#             */
+/*   Updated: 2018/11/26 12:50:19 by tmaze            ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include <unistd.h>
+#include <stdio.h>
+
+#include "../libft/libft.h"
+
+static void ft_cntdelstr(void* content, size_t content_size)
+{
+    ft_strdel((char**)content);
+    content_size = 0;
+}
+
+int	main(int argc, char **argv)
+{
+	extern	char	**environ;
+	t_list	*lst;
+	int				i;
+
+	i = -1;
+	while (environ[++i])
+		printf("%s\n", environ[i]);
+	if (argc > 1)
+		if ((lst = ft_strsplitstr2()))
+	return (0);
+}