diff --git a/42sh/.tags b/42sh/.tags
index c7191ae8..84c0c4ac 100644
--- a/42sh/.tags
+++ b/42sh/.tags
@@ -1,13 +1,14 @@
 Mmain	src/main.c	/^int		main(void)$/
-builtin_cd	src/builtin.c	/^int		builtin_cd(char **av, char **env)$/
-builtin_echo	src/builtin.c	/^int		builtin_echo(char **av, char **env)$/
-builtin_env	src/builtin_env.c	/^int		builtin_env(char **av, char **env)$/
-builtin_exit	src/builtin.c	/^int		builtin_exit(char **av, char **env)$/
-builtin_setenv	src/builtin_env.c	/^int		builtin_setenv(char **av, char **env)$/
-builtin_unsetenv	src/builtin_env.c	/^int		builtin_unsetenv(char **av, char **env)$/
-ft_builtin_exec	src/builtin.c	/^int		ft_builtin_exec(char **av, char **env)$/
-ft_cmd_exec	src/ft_cmd.c	/^int		ft_cmd_exec(char *cmd)$/
+builtin_cd	src/builtin_cd.c	/^int		builtin_cd(char **av, char ***env)$/
+builtin_echo	src/builtin_echo.c	/^int		builtin_echo(char **av, char ***env_p)$/
+builtin_env	src/builtin_env.c	/^int		builtin_env(char **av, char ***env_p)$/
+builtin_exit	src/builtin_exit.c	/^int		builtin_exit(char **av, char ***env_p)$/
+builtin_setenv	src/builtin_setenv.c	/^int		builtin_setenv(char **av, char ***env_p)$/
+builtin_unsetenv	src/builtin_unsetenv.c	/^int		builtin_unsetenv(char **av, char ***env)$/
+ft_builtin	src/builtin.c	/^int		ft_builtin(char **av, char ***env_p)$/
+ft_cmd_exec	src/ft_cmd.c	/^int		ft_cmd_exec(char *execpath, char **argv, char/
 ft_cmd_getav	src/ft_cmd.c	/^char	**ft_cmd_getav(char *cmd)$/
+ft_cmd_process	src/ft_cmd.c	/^int		ft_cmd_process(char *cmd)$/
 ft_env_getval	src/lib_env.c	/^char	*ft_env_getval(char **env, char *key)$/
 ft_expand_vars	src/lib_expansion.c	/^void	ft_expand_vars(char **av, char **env)$/
 ft_path_access	src/lib_path.c	/^int		ft_path_access(char *execpath, char *execname/
diff --git a/42sh/Session.vim b/42sh/Session.vim
new file mode 100644
index 00000000..95be206d
--- /dev/null
+++ b/42sh/Session.vim
@@ -0,0 +1,223 @@
+let SessionLoad = 1
+if &cp | set nocp | endif
+let s:so_save = &so | let s:siso_save = &siso | set so=0 siso=0
+let v:this_session=expand("<sfile>:p")
+silent only
+cd ~/42/minishell
+if expand('%') == '' && !&modified && line('$') <= 1 && getline(1) == ''
+  let s:wipebuf = bufnr('%')
+endif
+set shortmess=aoO
+badd +1 src/main.c
+badd +22 src/builtin.c
+badd +5 src/builtin_cd.c
+badd +10 src/builtin_echo.c
+badd +12 src/ft_cmd.c
+badd +13 includes/minishell.h
+badd +23 src/lib_path.c
+badd +9 Makefile
+badd +6 src/builtin_setenv.c
+badd +4 src/builtin_unsetenv.c
+badd +3 src/lib_env.c
+badd +5 src/builtin_env.c
+badd +4 src/builtin_exit.c
+badd +0 src/lib_expansion.c
+argglobal
+silent! argdel *
+argadd src/main.c
+set stal=2
+edit includes/minishell.h
+set splitbelow splitright
+wincmd _ | wincmd |
+vsplit
+1wincmd h
+wincmd w
+set nosplitbelow
+set nosplitright
+wincmd t
+set winheight=1 winwidth=1
+exe 'vert 1resize ' . ((&columns * 79 + 79) / 158)
+exe 'vert 2resize ' . ((&columns * 78 + 79) / 158)
+argglobal
+setlocal fdm=manual
+setlocal fde=0
+setlocal fmr={{{,}}}
+setlocal fdi=#
+setlocal fdl=0
+setlocal fml=1
+setlocal fdn=20
+setlocal fen
+silent! normal! zE
+let s:l = 27 - ((25 * winheight(0) + 19) / 38)
+if s:l < 1 | let s:l = 1 | endif
+exe s:l
+normal! zt
+27
+normal! 049|
+lcd ~/42/minishell
+wincmd w
+argglobal
+edit ~/42/minishell/src/main.c
+setlocal fdm=manual
+setlocal fde=0
+setlocal fmr={{{,}}}
+setlocal fdi=#
+setlocal fdl=0
+setlocal fml=1
+setlocal fdn=20
+setlocal fen
+silent! normal! zE
+let s:l = 12 - ((10 * winheight(0) + 19) / 38)
+if s:l < 1 | let s:l = 1 | endif
+exe s:l
+normal! zt
+12
+normal! 023|
+lcd ~/42/minishell
+wincmd w
+exe 'vert 1resize ' . ((&columns * 79 + 79) / 158)
+exe 'vert 2resize ' . ((&columns * 78 + 79) / 158)
+tabedit ~/42/minishell/src/ft_cmd.c
+set splitbelow splitright
+wincmd _ | wincmd |
+vsplit
+1wincmd h
+wincmd w
+set nosplitbelow
+set nosplitright
+wincmd t
+set winheight=1 winwidth=1
+exe 'vert 1resize ' . ((&columns * 78 + 79) / 158)
+exe 'vert 2resize ' . ((&columns * 79 + 79) / 158)
+argglobal
+setlocal fdm=manual
+setlocal fde=0
+setlocal fmr={{{,}}}
+setlocal fdi=#
+setlocal fdl=0
+setlocal fml=1
+setlocal fdn=20
+setlocal fen
+silent! normal! zE
+let s:l = 31 - ((12 * winheight(0) + 19) / 38)
+if s:l < 1 | let s:l = 1 | endif
+exe s:l
+normal! zt
+31
+normal! 0
+lcd ~/42/minishell
+wincmd w
+argglobal
+edit ~/42/minishell/src/lib_expansion.c
+setlocal fdm=manual
+setlocal fde=0
+setlocal fmr={{{,}}}
+setlocal fdi=#
+setlocal fdl=0
+setlocal fml=1
+setlocal fdn=20
+setlocal fen
+silent! normal! zE
+let s:l = 6 - ((5 * winheight(0) + 19) / 38)
+if s:l < 1 | let s:l = 1 | endif
+exe s:l
+normal! zt
+6
+normal! 0
+lcd ~/42/minishell
+wincmd w
+exe 'vert 1resize ' . ((&columns * 78 + 79) / 158)
+exe 'vert 2resize ' . ((&columns * 79 + 79) / 158)
+tabedit ~/42/minishell/src/builtin.c
+set splitbelow splitright
+wincmd _ | wincmd |
+vsplit
+1wincmd h
+wincmd w
+set nosplitbelow
+set nosplitright
+wincmd t
+set winheight=1 winwidth=1
+exe 'vert 1resize ' . ((&columns * 78 + 79) / 158)
+exe 'vert 2resize ' . ((&columns * 79 + 79) / 158)
+argglobal
+setlocal fdm=manual
+setlocal fde=0
+setlocal fmr={{{,}}}
+setlocal fdi=#
+setlocal fdl=0
+setlocal fml=1
+setlocal fdn=20
+setlocal fen
+silent! normal! zE
+let s:l = 20 - ((19 * winheight(0) + 19) / 38)
+if s:l < 1 | let s:l = 1 | endif
+exe s:l
+normal! zt
+20
+normal! 032|
+lcd ~/42/minishell
+wincmd w
+argglobal
+edit ~/42/minishell/src/builtin_exit.c
+setlocal fdm=manual
+setlocal fde=0
+setlocal fmr={{{,}}}
+setlocal fdi=#
+setlocal fdl=0
+setlocal fml=1
+setlocal fdn=20
+setlocal fen
+silent! normal! zE
+let s:l = 8 - ((7 * winheight(0) + 19) / 38)
+if s:l < 1 | let s:l = 1 | endif
+exe s:l
+normal! zt
+8
+normal! 014|
+lcd ~/42/minishell
+wincmd w
+2wincmd w
+exe 'vert 1resize ' . ((&columns * 78 + 79) / 158)
+exe 'vert 2resize ' . ((&columns * 79 + 79) / 158)
+tabedit ~/42/minishell/src/lib_env.c
+set splitbelow splitright
+set nosplitbelow
+set nosplitright
+wincmd t
+set winheight=1 winwidth=1
+argglobal
+setlocal fdm=manual
+setlocal fde=0
+setlocal fmr={{{,}}}
+setlocal fdi=#
+setlocal fdl=0
+setlocal fml=1
+setlocal fdn=20
+setlocal fen
+silent! normal! zE
+let s:l = 4 - ((3 * winheight(0) + 19) / 38)
+if s:l < 1 | let s:l = 1 | endif
+exe s:l
+normal! zt
+4
+normal! 0
+lcd ~/42/minishell
+tabnext 3
+set stal=1
+if exists('s:wipebuf')
+  silent exe 'bwipe ' . s:wipebuf
+endif
+unlet! s:wipebuf
+set winheight=1 winwidth=20 shortmess=filnxtToOc
+let s:sx = expand("<sfile>:p:r")."x.vim"
+if file_readable(s:sx)
+  exe "source " . fnameescape(s:sx)
+endif
+let &so = s:so_save | let &siso = s:siso_save
+let g:this_session = v:this_session
+let g:this_obsession = v:this_session
+let g:this_obsession_status = 2
+doautoall SessionLoadPost
+unlet SessionLoad
+" vim: set ft=vim :
diff --git a/42sh/includes/minishell.h b/42sh/includes/minishell.h
index 2d65a309..95538e56 100644
--- a/42sh/includes/minishell.h
+++ b/42sh/includes/minishell.h
@@ -15,16 +15,17 @@ typedef struct	s_builtin
 
 extern t_builtin	g_builtin[];
 
-int		ft_cmd_exec(char *cmd);
+int		ft_cmd_process(char *cmd);
+int		ft_cmd_exec(char *execpath, char **argv, char ***env_p);
 char	**ft_cmd_getav(char *cmd);
 
-int		ft_builtin_exec(char **av, char **env);
-int		builtin_echo(char **av, char **env);
-int		builtin_cd(char **av, char **env);
-int		builtin_exit(char **av, char **env);
-int		builtin_setenv(char **av, char **env);
-int		builtin_unsetenv(char **av, char **env);
-int		builtin_env(char **av, char **env);
+int		ft_builtin(char **av, char ***env);
+int		builtin_echo(char **av, char ***env);
+int		builtin_cd(char **av, char ***env);
+int		builtin_exit(char **av, char ***env);
+int		builtin_setenv(char **av, char ***env);
+int		builtin_unsetenv(char **av, char ***env);
+int		builtin_env(char **av, char ***env);
 
 void	ft_expand_vars(char **av, char **env);
 char	*ft_env_getval(char **env, char *key);
diff --git a/42sh/libft b/42sh/libft
index 70af533d..4e9b9eba 160000
--- a/42sh/libft
+++ b/42sh/libft
@@ -1 +1 @@
-Subproject commit 70af533db4c5a53646e2ea2e371d611cc9959f48
+Subproject commit 4e9b9eba0b3c38bba9543590c081c7fd33eeb2f5
diff --git a/42sh/src/builtin.c b/42sh/src/builtin.c
index 6b10da42..02369ea5 100644
--- a/42sh/src/builtin.c
+++ b/42sh/src/builtin.c
@@ -10,7 +10,7 @@ t_builtin g_builtin[] = {
 	{NULL, NULL},
 };
 
-int		ft_builtin_exec(char **av, char **env)
+int		ft_builtin(char **av, char ***env_p)
 {
 	int		i;
 
@@ -19,39 +19,10 @@ int		ft_builtin_exec(char **av, char **env)
 	{
 		if (ft_strcmp(g_builtin[i].name, *av) == 0)
 		{
-			(g_builtin[i].f)(av, env);
-			return (0);
+			(g_builtin[i].f)(av, env_p);
+			return (1);
 		}
 		i++;
 	}
-	return (1);
-}
-
-int		builtin_echo(char **av, char **env)
-{
-	(void)env;
-	av++;
-	while (*av)
-	{
-		ft_printf("%s", *av);
-		av++;
-		if (*av)
-			ft_putstr(" ");
-	}
-	ft_putendl("");
-	return (0);
-}
-
-int		builtin_cd(char **av, char **env)
-{
-	(void)env;
-	ft_printf("builtin: %s\n", av[0]);
-	return (0);
-}
-
-int		builtin_exit(char **av, char **env)
-{
-	(void)env;
-	ft_printf("builtin: %s\n", av[0]);
 	return (0);
 }
diff --git a/42sh/src/builtin_cd.c b/42sh/src/builtin_cd.c
new file mode 100644
index 00000000..2824a1b8
--- /dev/null
+++ b/42sh/src/builtin_cd.c
@@ -0,0 +1,8 @@
+#include "minishell.h"
+
+int		builtin_cd(char **av, char ***env)
+{
+	(void)env;
+	ft_printf("builtin: %s\n", av[0]);
+	return (0);
+}
diff --git a/42sh/src/builtin_echo.c b/42sh/src/builtin_echo.c
new file mode 100644
index 00000000..35272ee0
--- /dev/null
+++ b/42sh/src/builtin_echo.c
@@ -0,0 +1,16 @@
+#include "minishell.h"
+
+int		builtin_echo(char **av, char ***env_p)
+{
+	(void)env_p;
+	av++;
+	while (*av)
+	{
+		ft_printf("%s", *av);
+		av++;
+		if (*av)
+			ft_putstr(" ");
+	}
+	ft_putchar('\n');
+	return (0);
+}
diff --git a/42sh/src/builtin_env.c b/42sh/src/builtin_env.c
index 5582431f..cdbc4469 100644
--- a/42sh/src/builtin_env.c
+++ b/42sh/src/builtin_env.c
@@ -1,22 +1,8 @@
 #include "minishell.h"
 
-int		builtin_setenv(char **av, char **env)
+int		builtin_env(char **av, char ***env_p)
 {
-	(void)env;
-	ft_printf("builtin: %s\n", av[0]);
-	return (0);
-}
-
-int		builtin_unsetenv(char **av, char **env)
-{
-	(void)env;
-	ft_printf("builtin: %s\n", av[0]);
-	return (0);
-}
-
-int		builtin_env(char **av, char **env)
-{
-	(void)env;
+	(void)env_p;
 	ft_printf("builtin: %s\n", av[0]);
 	return (0);
 }
diff --git a/42sh/src/builtin_exit.c b/42sh/src/builtin_exit.c
new file mode 100644
index 00000000..514663a2
--- /dev/null
+++ b/42sh/src/builtin_exit.c
@@ -0,0 +1,15 @@
+#include "minishell.h"
+
+int		builtin_exit(char **av, char ***env_p)
+{
+	int		status;
+
+	(void)env_p;
+	if (av[1])
+		status = ft_atoi(av[1]);
+	else
+		status = ft_atoi(ft_env_getval(*env_p, "?"));
+	printf("exit status %i", status);
+	exit(status);
+	return (0);
+}
diff --git a/42sh/src/builtin_setenv.c b/42sh/src/builtin_setenv.c
new file mode 100644
index 00000000..f051e568
--- /dev/null
+++ b/42sh/src/builtin_setenv.c
@@ -0,0 +1,29 @@
+#include "minishell.h"
+
+int		builtin_setenv(char **av, char ***env_p)
+{
+	char	*str;
+	char	**env;
+
+	env = *env_p;
+	if (ft_strcmp(av[0], "setenv") == 0)
+		av++;
+	if (!av[0])
+		ft_sstrprint(*env_p, '\n');
+	else
+	{
+		str = ft_str3join(av[0], "=", av[1]);
+		while (*env)
+		{
+			/* ft_printf("%s\n", env[i]); */
+			if (ft_strcmp(*env, av[0]) == '=')
+			{
+				*env = str;
+				return (0);
+			}
+			env++;
+		}
+		*env_p = ft_sstradd(*env_p, str);
+	}
+	return (0);
+}
diff --git a/42sh/src/builtin_unsetenv.c b/42sh/src/builtin_unsetenv.c
new file mode 100644
index 00000000..0e9370f7
--- /dev/null
+++ b/42sh/src/builtin_unsetenv.c
@@ -0,0 +1,8 @@
+#include "minishell.h"
+
+int		builtin_unsetenv(char **av, char ***env)
+{
+	(void)env;
+	ft_printf("builtin: %s\n", av[0]);
+	return (0);
+}
diff --git a/42sh/src/ft_cmd.c b/42sh/src/ft_cmd.c
index 989a18d2..fb119c66 100644
--- a/42sh/src/ft_cmd.c
+++ b/42sh/src/ft_cmd.c
@@ -1,34 +1,50 @@
 #include "minishell.h"
 extern char **environ;
 
-int		ft_cmd_exec(char *cmd)
+int		ft_cmd_process(char *cmd)
 {
-	pid_t	pid;
-	int		status;
 	char	**path;
 	char	*execpath;
 	char	**argv;
 
+	/* path = NULL; */
+	environ = ft_sstrdup(environ);
 	path = ft_strsplit(ft_env_getval(environ, "PATH"), ':');
 	argv = ft_cmd_getav(cmd);
 	ft_expand_vars(argv, environ);
-	if (ft_builtin_exec(argv, environ) == 0)
+	if (ft_builtin(argv, &environ))
 		return (0);
 	else if (ft_strchr(argv[0], '/'))
 		execpath = cmd;
 	else if (!(execpath = ft_path_findexec(path, argv[0])))
 		return (-1);
-	/* ft_printf("%s @ %s\n", argv[0], execpath); */
+	ft_printf("%s @ %s\n", argv[0], execpath);
+	return (ft_cmd_exec(execpath, argv, &environ));
+}
+
+int		ft_cmd_exec(char *execpath, char **argv, char ***env_p)
+{
+	pid_t	pid;
+	int		status;
+	char	**environ;
+	char	**sstr;
+
+	sstr = NULL;
 	if (ft_path_access(execpath, argv[0]))
 		return (-1);
 	if ((pid = fork()) == -1)
 		return (-1);
 	else if (pid == 0)
+	{
+		environ = ft_sstrdup(*env_p);
 		execve(execpath, argv, environ);
+	}
 	else
 	{
 		wait(&status);
-		ft_printf("child process exited with %i\n", status);
+		sstr = ft_sstradd(sstr, "?");
+		sstr = ft_sstradd(sstr, ft_itoa(status));
+		builtin_setenv(sstr, env_p);
 	}
 	return (0);
 }
diff --git a/42sh/src/main.c b/42sh/src/main.c
index fc29fb75..6de49194 100644
--- a/42sh/src/main.c
+++ b/42sh/src/main.c
@@ -6,14 +6,10 @@ int		main(void)
 
 	while (1)
 	{
-		ft_printf(SHELL_PROMPT);
-		/* if (get_next_line(0, &line) == 1) */
-		/* 	continue ; */
-		/* if (get_next_line(0, &line) == 0) */
-		/* 	ft_cmd_exec(line); */
+		ft_putstr(SHELL_PROMPT);
 		if (get_next_line(0, &line) == -1)
 			return (1);
-		ft_cmd_exec(line);
+		ft_cmd_process(line);
 	}
 	return (0);
 }