diff --git a/ping/Makefile b/ping/Makefile
index 11b6c1c0..e6031de4 100644
--- a/ping/Makefile
+++ b/ping/Makefile
@@ -17,7 +17,7 @@ NAME		=	ft_ping
 CC			=	gcc
 RM			=	rm -rf 2>&-
 W_FLAGS		=	-Wall -Wextra -Werror
-D_FLAGS		=
+D_FLAGS		=	-D _GNU_SOURCE
 FLAGS		=	$(W_FLAGS) $(D_FLAGS)
 
 LEN_NAME	=	`printf "%s" $(NAME) |wc -c`
@@ -30,9 +30,11 @@ OBJ_DIR		=	objs/
 SRC_BASE	=	\
 ping.c\
 create_client.c\
-epoch.c\
 cksum.c\
 rs.c\
+epoch.c\
+cliopts.c\
+error.c\
 
 SRCS		=	$(addprefix $(SRC_DIR), $(SRC_BASE))
 OBJS		=	$(addprefix $(OBJ_DIR), $(SRC_BASE:.c=.o))
@@ -43,10 +45,7 @@ all :
 	@make -j $(NAME)
 
 $(NAME):	$(OBJ_DIR) $(OBJS) $(CLIENT_OBJ)
-	$(CC) $(OBJS) -o $@ \
-		-I $(INC_DIR) \
-		$(CLIENT_OBJ) $(FLAGS) \
-		-lm
+	$(CC) $(OBJS) -o $@ -I $(INC_DIR) $(CLIENT_OBJ) $(FLAGS) -lm
 	# sudo setcap cap_net_raw+ep $@ 2>&-
 
 $(OBJ_DIR) :
diff --git a/ping/cliopts.c b/ping/cliopts.c
new file mode 100644
index 00000000..5a7bd001
--- /dev/null
+++ b/ping/cliopts.c
@@ -0,0 +1,132 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   cliopts_get.c                                      :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: jhalford <jack@crans.org>                  +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2017/03/14 20:04:04 by jhalford          #+#    #+#             */
+/*   Updated: 2017/04/02 20:45:11 by jhalford         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+/*
+**	void *data must be a structure starting with `int flag`
+**	to do polymorphism with t_data_template !
+*/
+
+#include "cliopts.h"
+
+t_cliopts	*cliopts_getmap_long(t_cliopts opt_map[], char *arg)
+{
+	int		i;
+
+	i = -1;
+	while (opt_map[++i].c)
+		if (!strcmp(opt_map[i].str, arg))
+			return (&opt_map[i]);
+	return (NULL);
+}
+
+t_cliopts	*cliopts_getmap_short(t_cliopts opt_map[], char arg)
+{
+	int		i;
+
+	i = -1;
+	while (opt_map[++i].c)
+		if (opt_map[i].c == arg)
+			return (&opt_map[i]);
+	return (NULL);
+}
+
+static char			*check_required(char ***av, char *arg)
+{
+	char	*ret;
+
+	if (!av || !*av)
+		return (NULL);
+	if (!arg || !*arg || !*(arg + 1))
+		return (*++(*av));
+	ret = arg + 1;
+	return (ret);
+}
+
+static int			cliopts_parse_short(
+		char ***av, t_cliopts opt_map[], void *data)
+{
+	t_cliopts	*map;
+	char		*arg;
+	int			i;
+	char		*tmp;
+
+	arg = **av + 1;
+	i = -1;
+	while (arg[++i] && !(tmp = NULL))
+	{
+		if (!(map = cliopts_getmap_short(opt_map, arg[i])))
+			return (ERR_SET(E_CO_INV, arg[i]));
+		((t_data_template*)data)->flag |= map->flag_on;
+		((t_data_template*)data)->flag &= ~map->flag_off;
+		if (map->get)
+		{
+			if (map->arg_required && !(tmp = check_required(av, arg + i)))
+				return (ERR_SET(E_CO_MISS, *arg));
+			tmp = tmp ? tmp : **av;
+			if ((map->get)(tmp, data))
+				return (ERR_SET(E_CO_MISS, *arg));
+			if (map->arg_required)
+				break ;
+		}
+	}
+	return (++(*av) ? 0 : 0);
+}
+
+static int			cliopts_parse_long(
+		char ***av, t_cliopts opt_map[], void *data)
+{
+	t_cliopts	*map;
+	char		*arg;
+	char		*tmp;
+
+	arg = **av + 2;
+	tmp = NULL;
+	if (!(map = cliopts_getmap_long(opt_map, arg)))
+		return (ERR_SET(E_CO_INVL, arg));
+	((t_data_template*)data)->flag |= map->flag_on;
+	((t_data_template*)data)->flag &= ~map->flag_off;
+	if (map->get)
+	{
+		if (map->arg_required && !(tmp = check_required(av, NULL)))
+			return (ERR_SET(E_CO_MISS, *arg));
+		if ((map->get)(tmp, data))
+			return (ERR_SET(E_CO_MISSL, arg));
+	}
+	++(*av);
+	return (0);
+}
+
+int					cliopts_get(char **av, t_cliopts opt_map[], void *data)
+{
+	if (!av)
+		return (1);
+	av++;
+	while (av && *av)
+	{
+		if (strcmp(*av, "-") == 0 || (strcmp(*av, "--") == 0 && av++))
+			break ;
+		else if ((*av)[0] == '-' && (*av)[1] == '-')
+		{
+			if (cliopts_parse_long(&av, opt_map, data))
+				return (1);
+		}
+		else if ((*av)[0] == '-')
+		{
+			if (cliopts_parse_short(&av, opt_map, data))
+				return (1);
+		}
+		else
+			break ;
+	}
+	((t_data_template*)data)->av_data = av;
+	return (0);
+}
diff --git a/ping/cliopts.h b/ping/cliopts.h
new file mode 100644
index 00000000..cb12f929
--- /dev/null
+++ b/ping/cliopts.h
@@ -0,0 +1,40 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   cliopts.h                                          :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: jhalford <jack@crans.org>                  +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2017/03/14 20:22:56 by jhalford          #+#    #+#             */
+/*   Updated: 2017/10/07 18:04:53 by jhalford         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#pragma once
+
+# include "error.h"
+# include <string.h>
+
+typedef struct s_cliopts		t_cliopts;
+typedef struct s_data_template	t_data_template;
+typedef long long				t_flag;
+
+struct		s_cliopts
+{
+	char	c;
+	char	*str;
+	t_flag	flag_on;
+	t_flag	flag_off;
+	int		(*get)();			// (char *arg, void *data)
+	int		arg_required:1;
+};
+
+struct		s_data_template
+{
+	t_flag	flag;
+	char	**av_data;
+};
+
+int			cliopts_get(char **av, t_cliopts opt_map[], void *data);
+t_cliopts	*cliopts_getmap_long(t_cliopts opt_map[], char *arg);
+t_cliopts	*cliopts_getmap_short(t_cliopts opt_map[], char arg);
diff --git a/ping/error.c b/ping/error.c
new file mode 100644
index 00000000..cbc459dc
--- /dev/null
+++ b/ping/error.c
@@ -0,0 +1,68 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   error.c                                            :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: jhalford <jhalford@student.42.fr>          +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2017/03/14 16:47:00 by jhalford          #+#    #+#             */
+/*   Updated: 2017/03/25 01:53:25 by jhalford         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "error.h"
+
+char	g_error_msglist[E_MAX][ERRMSG_MAX_SIZE] =
+{
+	"unknown error 0",
+	"invalid option -%c",
+	"invalid option --%s",
+	"option '%c' awaits argument(s): please don't combine",
+	"option '%c': missing argument",
+	"option '%s': missing argument",
+	"%s: no such file or directory",
+	"%s: Is a directory",
+	"%s: Permission denied",
+};
+
+int		g_errnum = 0;
+char	*g_errmsg = NULL;
+char	**g_argv;
+
+int		error_set(int n, ...)
+{
+	va_list	ap;
+
+	g_errnum = n;
+	va_start(ap, n);
+	if (g_errmsg)
+	{
+		free(g_errmsg);
+		g_errmsg = NULL;
+	}
+	vasprintf(&g_errmsg, g_error_msglist[n], ap);
+	return (g_errnum);
+}
+
+int		ft_perror(char *utility)
+{
+	utility = utility ? utility : g_argv[0];
+	ERR_MSG(utility, g_errmsg);
+	return (g_errnum);
+}
+
+void	ft_usage(char *format, ...)
+{
+	va_list	ap;
+	char	*usage;
+
+	va_start(ap, format);
+	usage = NULL;
+	vasprintf(&usage, format, ap);
+	dprintf(2, "usage: %s\n", usage);
+	if (usage)
+	{
+		free(usage);
+		usage = NULL;
+	}
+}
diff --git a/ping/error.h b/ping/error.h
new file mode 100644
index 00000000..4ff21d9c
--- /dev/null
+++ b/ping/error.h
@@ -0,0 +1,64 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   error.h                                            :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: jhalford <jack@crans.org>                  +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2017/03/14 15:34:21 by jhalford          #+#    #+#             */
+/*   Updated: 2017/05/15 17:37:29 by ariard           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#ifndef ERROR_H
+# define ERROR_H
+
+# include <stdarg.h>
+# include <stdlib.h>
+# include <stdio.h>
+
+/*
+** DEBUG with malloc
+*/
+# define DG_MSG		"{inv}{ran}%5i{yel}%21s {bol}{blu}%-3d{eoc}"
+# define DG_ARGS	getpid(), getpid(), ft_path_notdir(__FILE__), __LINE__
+# define DG(s, ...)	dprintf(STDBUG,DG_MSG s "{eoc}\n",DG_ARGS,##__VA_ARGS__)
+
+/*
+** DEBUG with no malloc
+*/
+# define DG2		ft_putstr(__FILE__"\t");ft_putnbr(__LINE__)
+# define DGW(d)		DG2;d;ft_putchar('\n')
+# define DGS(s)		DGW(ft_putstr(": "s"="))
+# define DGSN(s, n)	DGW(ft_putstr(": "s"=");ft_putnbr(n))
+# define DGSH(s, n)	DGW(ft_putstr(": "s"=");ft_putnbr_hex(n))
+
+# define ERR_PROTO(u, m)	"%s: %s\n", u, m
+# define ERR_MSG(u, m)		dprintf(2, ERR_PROTO(u, m))
+# define ERR_SET(n, ...)	error_set(n, ##__VA_ARGS__)
+# define ERRMSG_MAX_SIZE	150
+
+enum	e_errors
+{
+	E_NOERR,
+	E_CO_INV,
+	E_CO_INVL,
+	E_CO_MULT,
+	E_CO_MISS,
+	E_CO_MISSL,
+	E_SYS_NOFILE,
+	E_SYS_ISDIR,
+	E_SYS_NOPERM,
+	E_MAX,
+};
+
+extern char	g_error_msg[E_MAX][ERRMSG_MAX_SIZE];
+extern char	*g_errmsg;
+extern int	g_errnum;
+extern char	**g_argv;
+
+int		error_set(int n, ...);
+int		ft_perror(char *utility);
+void	ft_usage(char *format, ...);
+
+#endif
diff --git a/ping/ping.c b/ping/ping.c
index 504fc963..0ec0e764 100644
--- a/ping/ping.c
+++ b/ping/ping.c
@@ -12,12 +12,27 @@
 
 #include "ping.h"
 
+#define PING_USAGE	"%s [-hv] [-t ttl] destination"
+
 t_ping		g_ping =
 {
 	.pid = -1,
 	.pkt_size = 56,
 	.pkt_sent = -1,
 	.pkt_recv = 0,
+	.ttl = 255,
+};
+
+int			get_ttl(char *arg, t_ping *data);
+
+t_cliopts	opts[] =
+{
+#define	FLAG_HELP		(1 << 0)
+#define	FLAG_VERBOSE	(1 << 1)
+#define	FLAG_TTL		(1 << 2)
+	{'h', NULL, FLAG_HELP, 0, NULL, 0},
+	{'v', NULL, FLAG_VERBOSE, 0, NULL, 0},
+	{'t', NULL, FLAG_TTL, 0, get_ttl, 1},
 };
 
 int			resolve_host(char *node, t_ping *ping)
@@ -126,14 +141,33 @@ void		stats_recap(int signo)
 	exit(0);
 }
 
+int			get_interval(char *arg, t_ping *data)
+{
+	data->interval = atof(arg);
+	return (0);
+}
+
+int			get_ttl(char *arg, t_ping *data)
+{
+	data->ttl = atoi(arg);
+	return (0);
+}
+
 int			main(int ac, char **av)
 {
-	if (ac != 2)
+	(void)ac;
+	if (cliopts_get(av, opts, &g_ping))
 	{
-		dprintf(2, "%s <addr>\n", av[0]);
+		ft_perror(av[0]);
+		ft_usage(PING_USAGE, av[0]);
 		exit(1);
 	}
-	resolve_host(av[1], &g_ping);
+	if (g_ping.flag & FLAG_HELP || !g_ping.av_data[0])
+	{
+		ft_usage(PING_USAGE, av[0]);
+		exit(!(g_ping.flag & FLAG_HELP));
+	}
+	resolve_host(g_ping.av_data[0], &g_ping);
 	if (g_ping.sa->ai_canonname)
 		printf("PING %s (%s): %zu(%zu) data bytes\n",
 				g_ping.sa->ai_canonname, g_ping.ip4,
@@ -146,7 +180,7 @@ int			main(int ac, char **av)
 		perror("socket");
 		exit(1);
 	}
-	if (setsockopt(g_ping.sock, 0, IP_TTL, (int[]){255}, sizeof(int)) != 0)
+	if (setsockopt(g_ping.sock, 0, IP_TTL, &g_ping.ttl, sizeof(g_ping.ttl)) != 0)
 	{
 		perror("setsockopt");
 		exit(1);
diff --git a/ping/ping.h b/ping/ping.h
index 2f9a039d..26773ba8 100644
--- a/ping/ping.h
+++ b/ping/ping.h
@@ -10,27 +10,27 @@
 /*                                                                            */
 /* ************************************************************************** */
 
-#ifndef FT_PING_H
-# define FT_PING_H
+#pragma once
 
 # include "rs.h"
+# include "cliopts.h"
 
 # include <stdlib.h>
 # include <string.h>
 # include <unistd.h>
 # include <sys/types.h>
+# include <sys/time.h>
+# include <sys/socket.h>
+# include <sys/wait.h>
 
 # include <fcntl.h>
 # include <errno.h>
-# include <sys/time.h>
 # include <resolv.h>
 # include <netdb.h>
-# include <sys/socket.h>
 # include <arpa/inet.h>
 # include <netinet/in.h>
 # include <netinet/ip.h>
 # include <netinet/ip_icmp.h>
-# include <sys/wait.h>
 
 # define FT_PCT(a, t)	(t ? 100 * (float)(t - a)/(float)t : 0)
 
@@ -38,11 +38,15 @@ typedef struct s_ping	t_ping;
 
 struct			s_ping
 {
+	t_flag			flag;
+	char			**av_data;
 	size_t			pkt_size;
 	pid_t			pid;
 	t_rs			rs;
 	int				pkt_sent;
 	int				pkt_recv;
+	int				ttl;
+	float			interval;
 	int				sock;
 	struct addrinfo	*sa;
 	union
@@ -60,5 +64,3 @@ unsigned short	cksum(void *b, int len);
 double			time_milli(void);
 void			listener(int domain, int sock, int proto,
 		void (*handler)(void *buf, int bytes, struct sockaddr *addr));
-
-#endif
diff --git a/ping/rs.h b/ping/rs.h
index 40bf6fc1..3aa6bd6b 100644
--- a/ping/rs.h
+++ b/ping/rs.h
@@ -10,8 +10,7 @@
 /*                                                                            */
 /* ************************************************************************** */
 
-#ifndef LIBFT_RS_H
-# define LIBFT_RS_H
+#pragma once
 
 # include <strings.h>
 # include <float.h>
@@ -33,5 +32,3 @@ struct				s_rs {
 void					rs_init(t_rs *rs);
 void					rs_push(t_rs *rs, double n);
 void					rs_final(t_rs *rs);
-
-#endif