builtins cd, pwd (todo, refactoring cd)

headers/minishell_prototypes.h

@@ -6,7 +6,7 @@
 /*   By: lperrey <lperrey@student.42.fr>            +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2021/10/08 02:59:58 by lperrey           #+#    #+#             */
-/*   Updated: 2021/12/04 15:46:00 by lperrey          ###   ########.fr       */
+/*   Updated: 2021/12/04 19:09:42 by lperrey          ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -72,6 +72,7 @@ typedef void	(*t_free_f)(void *); // generic
 
 // Error wrappers
 void	shell_error(char *s1, char *s2);
+void	shell_perror(char *s1, char *s2, char *s3);
 
 // Generic
 char	*ft_strjoinfree(char *s1, char *s2);