diff --git a/42sh/Makefile b/42sh/Makefile
index b9ffe23a..cfce41bd 100644
--- a/42sh/Makefile
+++ b/42sh/Makefile
@@ -78,6 +78,7 @@ exec/exec_semi.c\
 exec/exec_until.c\
 exec/exec_var.c\
 exec/exec_while.c\
+exec/exec_math.c\
 exec/fd_is_valid.c\
 exec/ft_exec.c\
 exec/ft_findexec.c\
diff --git a/42sh/includes/exec.h b/42sh/includes/exec.h
index 4fc79d2b..849a1654 100644
--- a/42sh/includes/exec.h
+++ b/42sh/includes/exec.h
@@ -6,7 +6,7 @@
 /*   By: jhalford <jack@crans.org>                  +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2016/11/27 20:29:56 by jhalford          #+#    #+#             */
-/*   Updated: 2017/03/07 14:41:58 by wescande         ###   ########.fr       */
+/*   Updated: 2017/03/07 15:17:21 by wescande         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -16,19 +16,12 @@
 # define PIPE_READ		0
 # define PIPE_WRITE		1
 
-# define PROCESS_BUILTIN	(1 << 0)
-# define PROCESS_BINARY		(1 << 1)
-# define PROCESS_SCRIPT		(1 << 2)
-# define PROCESS_SUBSHELL	(1 << 3)
-# define PROCESS_UNKNOWN	(1 << 4)
-# define PROCESS_CONTROL	(1 << 5)
-# define PROCESS_COMPLETED	(1 << 6)
-# define PROCESS_SUSPENDED	(1 << 7)
-# define PROCESS_RUNNING	(1 << 8)
-# define PROCESS_CONTINUED	(1 << 9)
+# define PROCESS_COMPLETED	(1 << 0)
+# define PROCESS_SUSPENDED	(1 << 1)
+# define PROCESS_RUNNING	(1 << 2)
+# define PROCESS_CONTINUED	(1 << 3)
 
-# define PROCESS_TYPE_MASK	(1 << 0 | 1 << 1 | 1 << 2 | 1 << 3 | 1 << 4 | 1 << 5)
-# define PROCESS_STATE_MASK	(1 << 6 | 1 << 7 | 1 << 8 | 1 << 9)
+# define PROCESS_STATE_MASK	((1 << 4) -  (1 << 0))
 
 # define IS_PIPESTART(p)	((p).fdin == STDIN)
 # define IS_PIPEEND(p)		((p).fdout == STDOUT)
@@ -39,18 +32,20 @@
 # define EXEC_OR_IF				(1 << 3)
 # define EXEC_IF_BRANCH			(1 << 4)
 # define EXEC_CASE_BRANCH		(1 << 5)
+
+# define EXEC_AOL_MASK			(EXEC_AND_IF | EXEC_OR_IF)
+
 # define EXEC_IS_BG(j)			(j & EXEC_BG)
 # define EXEC_IS_FG(j)			(!EXEC_IS_BG(j))
 # define EXEC_IS_AND_IF(j)		(j & EXEC_AND_IF)
 # define EXEC_IS_OR_IF(j)		(j & EXEC_OR_IF)
-# define EXEC_AOL_MASK			(EXEC_AND_IF | EXEC_OR_IF)
-
 # define EXEC_IS_IF_BRANCH(j)	(j & EXEC_IF_BRANCH)
 # define EXEC_IS_CASE_BRANCH(j)	(j & EXEC_CASE_BRANCH)
 
 # include "../libft/includes/libft.h"
 # include "types.h"
 # include "job_control.h"
+# include "minishell.h"
 
 struct	s_data_cmd
 {
@@ -83,32 +78,34 @@ union	u_process_data
 //	struct s_data_cond	case;
 };
 
-typedef union u_process_data	t_pdata;
+enum	e_process_type
+{
+	PROCESS_FUNCTION,
+	PROCESS_BUILTIN,
+	PROCESS_FILE,
+	PROCESS_SUBSHELL,
+	PROCESS_WHILE,
+	PROCESS_IF,
+	PROCESS_FOR,
+	PROCESS_CASE,
+};
+
+typedef enum e_process_type		t_process_type;
+typedef union u_process_data	t_process_data;
 typedef struct s_data_cond		t_data_while;
 typedef struct s_data_cond		t_data_if;
+
 struct	s_process
 {
-	//normal_cmd
-//	char	**av;
-//	char	*path;
-//	t_execf	*execf;
-	//while, if, elif ....
-//	t_btree		*condition;
-//	t_btree		*content;
-	//for => utilisation du av et du content
-//	char		**av;
-//	t_btree		*content;
-
-
-	t_pdata	data;
-
-	pid_t	pid;
-	int		fdin;
-	int		fdout;
-	int		to_close;
-	t_list	*redirs;
-	int		status;
-	t_flag	attrs;
+	t_process_type	type;
+	t_process_data	data;
+	pid_t			pid;
+	int				fdin;
+	int				fdout;
+	int				to_close;
+	t_list			*redirs;
+	int				status;
+	t_flag			attrs;
 };
 
 struct	s_exec
@@ -122,22 +119,10 @@ struct	s_exec
 	int			control_count;
 };
 
-struct	s_execmap
-{
-	t_type	type;
-	int		(*f)(t_btree **ast);
-};
 
-struct	s_redirmap
-{
-	t_flag	type;
-	int		(*f)(t_redir *redir);
-};
-
-#include "minishell.h"
-
-extern t_execmap	g_execmap[];
-extern t_redirmap	g_redirmap[];
+extern t_itof	g_execmap[];
+extern t_itof	g_redirmap[];
+extern t_itof	g_launchmap[];
 
 int		ft_exec(t_btree **ast);
 
@@ -161,6 +146,7 @@ int		exec_var(t_btree **ast);
 int		exec_for(t_btree **ast);
 int		exec_case(t_btree **ast);
 int		exec_case_branch(t_btree **ast);
+int		exec_math(t_btree **ast);
 
 int		launch_process(t_process *p);
 int		set_process(t_process *p, t_btree *ast);
@@ -171,7 +157,7 @@ void	process_free(void *content, size_t content_size);
 void	process_reset(t_process *p);
 void	process_resetfds(void);
 
-int		fd_is_valid(int fd);
+int		fd_is_valid(int fd, int flag);
 int		bad_fd(int fd);
 int		process_redirect(t_process *p);
 int		redirect_great(t_redir *redir);
diff --git a/42sh/includes/minishell.h b/42sh/includes/minishell.h
index 59e15890..7fab094a 100644
--- a/42sh/includes/minishell.h
+++ b/42sh/includes/minishell.h
@@ -6,7 +6,7 @@
 /*   By: jhalford <jhalford@student.42.fr>          +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2016/11/10 13:07:44 by jhalford          #+#    #+#             */
-/*   Updated: 2017/03/04 16:46:52 by ariard           ###   ########.fr       */
+/*   Updated: 2017/03/07 14:27:40 by jhalford         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
diff --git a/42sh/includes/types.h b/42sh/includes/types.h
index 2af27fa4..792363f9 100644
--- a/42sh/includes/types.h
+++ b/42sh/includes/types.h
@@ -6,7 +6,7 @@
 /*   By: jhalford <jack@crans.org>                  +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2016/12/13 17:11:48 by jhalford          #+#    #+#             */
-/*   Updated: 2017/03/06 17:51:59 by ariard           ###   ########.fr       */
+/*   Updated: 2017/03/07 15:08:17 by jhalford         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
diff --git a/42sh/libft b/42sh/libft
index a966b8a2..bc489f86 160000
--- a/42sh/libft
+++ b/42sh/libft
@@ -1 +1 @@
-Subproject commit a966b8a20028daba5580237fa0b0b18e16208f1b
+Subproject commit bc489f8664fdc24317c31b3069811f54b1178643
diff --git a/42sh/src/builtin/bt_read_get.c b/42sh/src/builtin/bt_read_get.c
index 62700b5a..f2e70ab1 100644
--- a/42sh/src/builtin/bt_read_get.c
+++ b/42sh/src/builtin/bt_read_get.c
@@ -6,7 +6,7 @@
 /*   By: jhalford <jack@crans.org>                  +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2017/01/21 18:00:03 by jhalford          #+#    #+#             */
-/*   Updated: 2017/02/03 15:58:41 by jhalford         ###   ########.fr       */
+/*   Updated: 2017/03/07 11:27:49 by ariard           ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
diff --git a/42sh/src/builtin/builtin_env.c b/42sh/src/builtin/builtin_env.c
index 100cd236..9458300d 100644
--- a/42sh/src/builtin/builtin_env.c
+++ b/42sh/src/builtin/builtin_env.c
@@ -6,7 +6,7 @@
 /*   By: jhalford <jhalford@student.42.fr>          +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2016/11/28 14:14:20 by jhalford          #+#    #+#             */
-/*   Updated: 2017/03/03 16:07:30 by jhalford         ###   ########.fr       */
+/*   Updated: 2017/03/07 11:29:18 by ariard           ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
diff --git a/42sh/src/builtin/builtin_setenv.c b/42sh/src/builtin/builtin_setenv.c
index 3c803bd5..d5d5f99f 100644
--- a/42sh/src/builtin/builtin_setenv.c
+++ b/42sh/src/builtin/builtin_setenv.c
@@ -6,7 +6,7 @@
 /*   By: jhalford <jhalford@student.42.fr>          +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2016/11/28 14:25:17 by jhalford          #+#    #+#             */
-/*   Updated: 2017/02/17 13:18:25 by gwojda           ###   ########.fr       */
+/*   Updated: 2017/03/07 11:28:05 by ariard           ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
diff --git a/42sh/src/builtin/is_builtin.c b/42sh/src/builtin/is_builtin.c
index 9c1216f0..3a2ee82c 100644
--- a/42sh/src/builtin/is_builtin.c
+++ b/42sh/src/builtin/is_builtin.c
@@ -6,7 +6,7 @@
 /*   By: jhalford <jhalford@student.42.fr>          +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2016/12/13 13:09:57 by jhalford          #+#    #+#             */
-/*   Updated: 2017/03/07 14:39:17 by wescande         ###   ########.fr       */
+/*   Updated: 2017/03/07 15:17:32 by wescande         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
diff --git a/42sh/src/exec/exec_command.c b/42sh/src/exec/exec_command.c
index 6a6d04be..1054cc05 100644
--- a/42sh/src/exec/exec_command.c
+++ b/42sh/src/exec/exec_command.c
@@ -6,7 +6,7 @@
 /*   By: jhalford <marvin@42.fr>                    +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2016/11/14 17:28:14 by jhalford          #+#    #+#             */
-/*   Updated: 2017/03/07 15:03:54 by wescande         ###   ########.fr       */
+/*   Updated: 2017/03/07 15:17:47 by wescande         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
diff --git a/42sh/src/exec/exec_math.c b/42sh/src/exec/exec_math.c
new file mode 100644
index 00000000..e157ef4c
--- /dev/null
+++ b/42sh/src/exec/exec_math.c
@@ -0,0 +1,77 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   exec_math.c                                        :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: ariard <ariard@student.42.fr>              +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2017/03/07 10:58:49 by ariard            #+#    #+#             */
+/*   Updated: 2017/03/07 13:42:11 by ariard           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "exec.h"
+
+static int	get_math(char *stream, char **var, char **value, char **operator)
+{
+	char	*temp;
+
+	*var = ft_strduptr(stream, &ft_isalpha);
+	temp = ft_sstrstr(data_singleton()->env, *var);
+	if (temp)
+	{
+		temp += ft_strlenchr(temp, '=') + 1;
+		*value = ft_strdup(temp);
+		if (!(ft_stris(*value, &ft_isdigit)))
+		{
+			ft_strdel(value);
+			*value = ft_itoa(0);
+		}
+	}
+	else
+		*value = ft_itoa(0);
+	stream += ft_strlen(*var);
+	*operator = ft_strdup(stream);
+	return (0);
+}
+
+static int	do_math(char **value, char *operator)
+{
+	long	ope1;
+	long	ope2;
+
+	ope1 = ft_atoi(*value);
+	if (operator[2])
+		ope2 = ft_atoi(&operator[2]);
+	else
+		ope2 = 0;
+	if (operator[0] == '/' && ope2 == 0)
+		ope1 = 0;
+	else
+	{
+		ope1 = (operator[0] == '+') ? ope1 + ope2 : ope1;
+		ope1 = (operator[0] == '-') ? ope1 - ope2 : ope1;
+		ope1 = (operator[0] == '/') ? ope1 / ope2 : ope1;
+		ope1 = (operator[0] == '*') ? ope1 * ope2 : ope1;
+		ope1 = (operator[0] == '%') ? ope1 % ope2 : ope1;
+	}
+	ft_strdel(value);
+	*value = ft_itoa(ope1);
+	return (0);
+}
+
+int			exec_math(t_btree **ast)
+{
+	t_astnode	*node;
+	char		**av;
+	char		*var;
+	char		*value;
+	char		*operator;
+
+	node = (*ast)->item;
+	av = token_to_argv(node->data.cmd.wordlist, 1);
+	get_math(av[0], &var, &value, &operator);
+	do_math(&value, operator);
+	builtin_setenv("setenv", (char *[]){var, value, 0}, data_singleton()->local_var);
+	return (0);
+}
diff --git a/42sh/src/exec/exec_var.c b/42sh/src/exec/exec_var.c
index 4eca2107..b01c2f39 100644
--- a/42sh/src/exec/exec_var.c
+++ b/42sh/src/exec/exec_var.c
@@ -1,12 +1,12 @@
 /* ************************************************************************** */
 /*                                                                            */
 /*                                                        :::      ::::::::   */
-/*   exec_while.c                                       :+:      :+:    :+:   */
+/*   exec_var.c                                         :+:      :+:    :+:   */
 /*                                                    +:+ +:+         +:+     */
 /*   By: ariard <ariard@student.42.fr>              +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
-/*   Created: 2017/01/30 17:33:53 by ariard            #+#    #+#             */
-/*   Updated: 2017/03/07 12:17:43 by wescande         ###   ########.fr       */
+/*   Created: 2017/03/07 11:12:05 by ariard            #+#    #+#             */
+/*   Updated: 2017/03/07 14:40:30 by ariard           ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -14,12 +14,9 @@
 
 static int	set_var(char *stream, char **var, char **value)
 {
-	(void)stream;
-	(void)var;
-	(void)value;
-/*	*var = ft_strdupchr(stream, '=');
+	*var = ft_strdupchr(stream, '=');
 	stream += ft_strlenchr(stream, '=') + 1;
-	value = ft_strdup(stream);*/
+	*value = ft_strdup(stream);
 	return (0);
 }
 
diff --git a/42sh/src/exec/fd_is_valid.c b/42sh/src/exec/fd_is_valid.c
index d89e0f49..39fac840 100644
--- a/42sh/src/exec/fd_is_valid.c
+++ b/42sh/src/exec/fd_is_valid.c
@@ -6,13 +6,16 @@
 /*   By: jhalford <jack@crans.org>                  +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2017/02/03 13:46:40 by jhalford          #+#    #+#             */
-/*   Updated: 2017/03/05 19:44:16 by jhalford         ###   ########.fr       */
+/*   Updated: 2017/03/06 16:58:38 by jhalford         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
 #include "minishell.h"
 
-int		fd_is_valid(int fd)
+int		fd_is_valid(int fd, int has_flag)
 {
-	return (fcntl(fd, F_GETFD) != -1 || errno != EBADF);
+	int		flags;
+
+	flags = fcntl(fd, F_GETFD);
+	return ((flags != -1 || errno != EBADF) && flags & has_flag);
 }
diff --git a/42sh/src/exec/ft_exec.c b/42sh/src/exec/ft_exec.c
index cfb28bde..00043e4b 100644
--- a/42sh/src/exec/ft_exec.c
+++ b/42sh/src/exec/ft_exec.c
@@ -6,13 +6,13 @@
 /*   By: jhalford <jack@crans.org>                  +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2016/11/27 20:30:32 by jhalford          #+#    #+#             */
-/*   Updated: 2017/03/07 14:33:06 by wescande         ###   ########.fr       */
+/*   Updated: 2017/03/07 15:18:27 by wescande         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
 #include "exec.h"
 
-t_execmap	g_execmap[] =
+t_itof	g_execmap[] =
 {
 	{TK_NEWLINE, &exec_semi},
 	{TK_SEMI, &exec_semi},
@@ -29,6 +29,7 @@ t_execmap	g_execmap[] =
 	{TK_CASE, &exec_case},
 	{TK_PAREN_OPEN, &exec_case_branch},
 	{TK_ASSIGNEMENT_WORD, &exec_var},
+	{MATH, &exec_math},
 	/* {TK_SUBSHELL, &exec_}, */
 	{CMD, &exec_cmd},
 	{0, 0},
diff --git a/42sh/src/exec/launch_file.c b/42sh/src/exec/launch_file.c
new file mode 100644
index 00000000..c482d419
--- /dev/null
+++ b/42sh/src/exec/launch_file.c
@@ -0,0 +1,59 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   launch_file.c                                      :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: jhalford <jack@crans.org>                  +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2017/03/07 14:53:31 by jhalford          #+#    #+#             */
+/*   Updated: 2017/03/07 14:54:18 by jhalford         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+int		launch_file(t_process *p)
+{
+	int		pid;
+
+	if (p->attrs & PROCESS_BUILTIN && IS_PIPESINGLE(*p))
+	{
+		if (process_redirect(p))
+			return (1);
+		set_exitstatus((*p->execf)(p->path, p->av, data_singleton()->env), 1);
+		return (1);
+	}
+	p->attrs &= ~PROCESS_STATE_MASK;
+	p->attrs |= PROCESS_RUNNING;
+	if (p->attrs & (PROCESS_BINARY | PROCESS_SCRIPT)
+			&& access(p->path, X_OK) == -1)
+	{
+		ft_dprintf(2, "{red}%s: permission denied: %s{eoc}\n", SHELL_NAME, p->av[0]);
+		set_exitstatus(126, 1);
+		return (1);
+	}
+	pid = fork();
+	if (pid == 0)
+	{
+		if (p->attrs & PROCESS_UNKNOWN)
+		{
+			ft_dprintf(2, "{red}%s: command not found: %s{eoc}\n", SHELL_NAME, p->av[0]);
+			exit(127);
+		}
+		process_setgroup(p, 0);
+		process_setsig();
+		if (process_redirect(p))
+			exit (1);
+		if (p->attrs & PROCESS_BUILTIN)
+			exit((*p->execf)(p->path, p->av, data_singleton()->env));
+		(*p->execf)(p->path, p->av, data_singleton()->env);
+		ft_dprintf(2, "{red}%s: internal execve error on %s{eoc}\n", SHELL_NAME, p->av[0]);
+	}
+	else if (pid > 0)
+	{
+		p->pid = pid;
+		process_setgroup(p, pid);
+		return (0);
+	}
+	else if (pid == -1)
+		ft_dprintf(2, "{red}%s: internal fork error{eoc}\n", SHELL_NAME);
+	return (1);
+}
diff --git a/42sh/src/exec/launch_process.c b/42sh/src/exec/launch_process.c
index e3c006fc..6b3a1df0 100644
--- a/42sh/src/exec/launch_process.c
+++ b/42sh/src/exec/launch_process.c
@@ -6,59 +6,36 @@
 /*   By: jhalford <jhalford@student.42.fr>          +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2016/12/13 14:20:45 by jhalford          #+#    #+#             */
-/*   Updated: 2017/03/07 14:43:48 by wescande         ###   ########.fr       */
+/*   Updated: 2017/03/07 15:19:05 by wescande         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
 #include "minishell.h"
 
+t_itof	g_launchmap[] =
+{
+	{PROCESS_FUNCTION, NULL},
+	{PROCESS_BUILTIN, NULL},
+	{PROCESS_FILE, launch_file},
+	{PROCESS_SUBSHELL, NULL},
+	{PROCESS_WHILE, NULL},
+	{PROCESS_IF, NULL},
+	{PROCESS_FOR, NULL},
+	{PROCESS_CASE, NULL},
+};
+
 int		launch_process(t_process *p)
 {
-	int		pid;
+	int			i;
 
-	/* DG("gonna launch [%s]", p->av[0]); */
-	/* DG("fdin=[%i]", p->fdin); */
-	/* DG("fdout=[%i]", p->fdout); */
-	if (p->attrs & PROCESS_BUILTIN && IS_PIPESINGLE(*p))
+	i = 0;
+	while (g_launchmap[i].type)
 	{
-		if (process_redirect(p))
-			return (1);
-		set_exitstatus((*p->data.cmd.execf)(p->data.cmd.path, p->data.cmd.av, data_singleton()->env), 1);
-		return (1);
+		if (p->type == g_launchmap[i].type)
+			if (!g_launchmap[i].f)
+				return (-1);
+			return ((*g_launchmap[i].f)(p));
+		i++;
 	}
-	p->attrs &= ~PROCESS_STATE_MASK;
-	p->attrs |= PROCESS_RUNNING;
-	if (p->attrs & (PROCESS_BINARY | PROCESS_SCRIPT)
-			&& access(p->data.cmd.path, X_OK) == -1)
-	{
-		ft_dprintf(2, "{red}%s: permission denied: %s{eoc}\n", SHELL_NAME, p->data.cmd.av[0]);
-		set_exitstatus(126, 1);
-		return (1);
-	}
-	pid = fork();
-	if (pid == 0)
-	{
-		if (p->attrs & PROCESS_UNKNOWN)
-		{
-			ft_dprintf(2, "{red}%s: command not found: %s{eoc}\n", SHELL_NAME, p->data.cmd.av[0]);
-			exit(127);
-		}
-		process_setgroup(p, 0);
-		process_setsig();
-		if (process_redirect(p))
-			exit (1);
-		if (p->attrs & PROCESS_BUILTIN)
-			exit((*p->data.cmd.execf)(p->data.cmd.path, p->data.cmd.av, data_singleton()->env));
-		(*p->data.cmd.execf)(p->data.cmd.path, p->data.cmd.av, data_singleton()->env);
-		ft_dprintf(2, "{red}%s: internal execve error on %s{eoc}\n", SHELL_NAME, p->data.cmd.av[0]);
-	}
-	else if (pid > 0)
-	{
-		p->pid = pid;
-		process_setgroup(p, pid);
-		return (0);
-	}
-	else if (pid == -1)
-		ft_dprintf(2, "{red}%s: internal fork error{eoc}\n", SHELL_NAME);
-	return (1);
+	return (-1);
 }
diff --git a/42sh/src/exec/process_setexec.c b/42sh/src/exec/process_setexec.c
index 46f381c6..0ab8f264 100644
--- a/42sh/src/exec/process_setexec.c
+++ b/42sh/src/exec/process_setexec.c
@@ -6,7 +6,7 @@
 /*   By: jhalford <jhalford@student.42.fr>          +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2016/12/13 17:07:10 by jhalford          #+#    #+#             */
-/*   Updated: 2017/03/07 14:42:01 by wescande         ###   ########.fr       */
+/*   Updated: 2017/03/07 15:34:12 by wescande         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -15,23 +15,25 @@
 int		process_setexec(t_process *p)
 {
 	p->data.cmd.path = NULL;
+	/* if ((p->execf = is_function(p))) */
+	/* 	p->type = PROCESS_FUNCTION; */
 	if ((p->data.cmd.execf = is_builtin(p)))
-		p->attrs |= PROCESS_BUILTIN;
-	else if (ft_strchr(p->data.cmd.av[0], '/'))
-	{
-		p->data.cmd.execf = &execve;
-		p->attrs |= PROCESS_SCRIPT;
-		p->data.cmd.path = ft_strdup(p->data.cmd.av[0]);
-	}
+		p->type = PROCESS_BUILTIN;
 	else if (ft_hash(p))
 	{
 		p->data.cmd.execf = &execve;
-		p->attrs |= PROCESS_BINARY;
+		p->type = PROCESS_FILE;
+	}
+	else if (ft_strchr(p->data.cmd.av[0], '/'))
+	{
+		p->data.cmd.execf = &execve;
+		p->type = PROCESS_FILE;
+		p->data.cmd.path = ft_strdup(p->data.cmd.av[0]);
 	}
 	else
 	{
 		p->data.cmd.execf = NULL;
-		p->attrs |= PROCESS_UNKNOWN;
+//		p->attrs |= PROCESS_UNKNOWN;
 		return (1);
 	}
 	return (0);
diff --git a/42sh/src/exec/redirect_greatand.c b/42sh/src/exec/redirect_greatand.c
index c210c647..002375e8 100644
--- a/42sh/src/exec/redirect_greatand.c
+++ b/42sh/src/exec/redirect_greatand.c
@@ -6,7 +6,7 @@
 /*   By: jhalford <jack@crans.org>                  +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2017/02/06 22:12:31 by jhalford          #+#    #+#             */
-/*   Updated: 2017/03/05 19:44:10 by jhalford         ###   ########.fr       */
+/*   Updated: 2017/03/06 16:54:43 by jhalford         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -33,7 +33,7 @@ int		redirect_greatand(t_redir *redir)
 		return (0);
 	if (fdold > 9)
 		return (bad_fd(fdold));
-	if (fd_is_valid(fdold))
+	if (fd_is_valid(fdold, O_RDONLY))
 		dup2_close(fdold, fdnew);
 	else
 		return (bad_fd(fdold));
diff --git a/42sh/src/exec/redirect_lessand.c b/42sh/src/exec/redirect_lessand.c
index 0c3b5982..bb9987d6 100644
--- a/42sh/src/exec/redirect_lessand.c
+++ b/42sh/src/exec/redirect_lessand.c
@@ -6,7 +6,7 @@
 /*   By: jhalford <jack@crans.org>                  +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2017/02/06 22:11:18 by jhalford          #+#    #+#             */
-/*   Updated: 2017/03/05 19:43:42 by jhalford         ###   ########.fr       */
+/*   Updated: 2017/03/06 16:53:29 by jhalford         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -33,7 +33,7 @@ int		redirect_lessand(t_redir *redir)
 		return (0);
 	if (fdold > 9)
 		return (bad_fd(fdold));
-	if (fd_is_valid(fdold))
+	if (fd_is_valid(fdold, O_WRONLY))
 		dup2_close(fdold, fdnew);
 	else
 		return (bad_fd(fdold));
diff --git a/42sh/src/exec/set_process.c b/42sh/src/exec/set_process.c
index 8dedbcb0..b99307ed 100644
--- a/42sh/src/exec/set_process.c
+++ b/42sh/src/exec/set_process.c
@@ -6,7 +6,7 @@
 /*   By: jhalford <jack@crans.org>                  +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2017/03/05 14:54:45 by jhalford          #+#    #+#             */
-/*   Updated: 2017/03/07 15:07:44 by wescande         ###   ########.fr       */
+/*   Updated: 2017/03/07 15:34:31 by wescande         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
diff --git a/42sh/src/hash_table/ft_add_hash.c b/42sh/src/hash_table/ft_add_hash.c
index 659d126d..f97ead44 100644
--- a/42sh/src/hash_table/ft_add_hash.c
+++ b/42sh/src/hash_table/ft_add_hash.c
@@ -6,7 +6,7 @@
 /*   By: gwojda <gwojda@student.42.fr>              +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2017/02/18 11:20:11 by gwojda            #+#    #+#             */
-/*   Updated: 2017/03/07 14:44:52 by wescande         ###   ########.fr       */
+/*   Updated: 2017/03/07 15:34:57 by wescande         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
diff --git a/42sh/src/main/main.c b/42sh/src/main/main.c
index 79ddbe24..cf6c3dcc 100644
--- a/42sh/src/main/main.c
+++ b/42sh/src/main/main.c
@@ -6,7 +6,7 @@
 /*   By: jhalford <jhalford@student.42.fr>          +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2016/12/06 18:40:58 by jhalford          #+#    #+#             */
-/*   Updated: 2017/03/06 17:58:39 by ariard           ###   ########.fr       */
+/*   Updated: 2017/03/07 15:09:53 by jhalford         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
diff --git a/42sh/src/main/shell_get_opts.c b/42sh/src/main/shell_get_opts.c
index 0eee3eb4..dc75dddd 100644
--- a/42sh/src/main/shell_get_opts.c
+++ b/42sh/src/main/shell_get_opts.c
@@ -6,7 +6,7 @@
 /*   By: jhalford <jack@crans.org>                  +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2017/01/11 14:04:48 by jhalford          #+#    #+#             */
-/*   Updated: 2017/03/05 17:45:37 by jhalford         ###   ########.fr       */
+/*   Updated: 2017/03/06 16:52:34 by jhalford         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
diff --git a/42sh/src/parser/add_case.c b/42sh/src/parser/add_case.c
index f5862cef..4b4d5415 100644
--- a/42sh/src/parser/add_case.c
+++ b/42sh/src/parser/add_case.c
@@ -6,7 +6,7 @@
 /*   By: ariard <ariard@student.42.fr>              +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2017/03/04 20:42:13 by ariard            #+#    #+#             */
-/*   Updated: 2017/03/06 19:36:37 by ariard           ###   ########.fr       */
+/*   Updated: 2017/03/07 11:52:45 by ariard           ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -90,6 +90,7 @@ int		add_pattern(t_btree **ast, t_list **lst)
 	t_token		*token;
 	char		**my_tab;
 	
+	DG("add pattern");
 	token = (*lst)->content;
 	node = (*ast)->item;
 	if ((my_tab = (char **)malloc(sizeof(char *) * 4)))
diff --git a/42sh/src/parser/add_func.c b/42sh/src/parser/add_func.c
index ab3e0ae2..cc481f37 100644
--- a/42sh/src/parser/add_func.c
+++ b/42sh/src/parser/add_func.c
@@ -6,7 +6,7 @@
 /*   By: ariard <ariard@student.42.fr>              +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2017/02/24 23:43:07 by ariard            #+#    #+#             */
-/*   Updated: 2017/03/03 14:27:25 by ariard           ###   ########.fr       */
+/*   Updated: 2017/03/07 10:49:15 by ariard           ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -88,7 +88,7 @@ int		add_one_func(t_btree **ast, t_list **lst)
 	t_btree	*func_ast;
 
 	(void)lst;
-	func_ast = btree_map(*ast, &id);
+//	func_ast = btree_map(*ast, &id);
 	ft_lsteadd(&data_singleton()->lst_func, ft_lstnew(&func_ast, sizeof(*ast)));
 	DG("arbre ajoute");
 	return (0);
diff --git a/42sh/src/parser/add_var.c b/42sh/src/parser/add_var.c
index ad11bf54..661446b4 100644
--- a/42sh/src/parser/add_var.c
+++ b/42sh/src/parser/add_var.c
@@ -6,7 +6,7 @@
 /*   By: ariard <ariard@student.42.fr>              +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2017/03/03 15:08:16 by ariard            #+#    #+#             */
-/*   Updated: 2017/03/03 16:17:27 by ariard           ###   ########.fr       */
+/*   Updated: 2017/03/07 14:40:21 by ariard           ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
diff --git a/42sh/src/parser/eval_sym.c b/42sh/src/parser/eval_sym.c
index d9a3de5c..dddb3261 100644
--- a/42sh/src/parser/eval_sym.c
+++ b/42sh/src/parser/eval_sym.c
@@ -188,7 +188,7 @@ t_stackmatch	g_stackmatch[] =
 	{TK_GREATAND, NEWLINE_LIST},
 	{TK_GREATAND, PIPE_SEMI_SEQUENCE},
 	{TK_GREATAND, SEQUENCE},
-//	watch ! 
+//	watch !
 	{TK_GREATAND, CMD_SUPERIOR},
 	{TK_GREATAND, AND_OR_MAJOR},
 
diff --git a/42sh/src/parser/produce_sym.c b/42sh/src/parser/produce_sym.c
index 754f1205..868c0117 100644
--- a/42sh/src/parser/produce_sym.c
+++ b/42sh/src/parser/produce_sym.c
@@ -6,7 +6,7 @@
 /*   By: ariard <ariard@student.42.fr>              +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2017/02/09 17:58:34 by ariard            #+#    #+#             */
-/*   Updated: 2017/03/06 16:43:10 by ariard           ###   ########.fr       */
+/*   Updated: 2017/03/07 15:09:59 by jhalford         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */