diff --git a/Makefile b/Makefile
index e596344..9a2a361 100644
--- a/Makefile
+++ b/Makefile
@@ -25,7 +25,7 @@ LIBS =	-L $(LIBFT_D) -lft \
 LIBFT_D = ./libft
 LIBFT = $(LIBFT_D)/libft.a
 
-SRCS =	main.c init.c free.c generic.c error_wrappers.c \
+SRCS =	main.c init.c retrieve_path.c free.c generic.c error_wrappers.c \
 		signals.c \
 		shell_loop.c shell_script.c \
 		lexing.c fill_token.c check_operators.c \
diff --git a/headers/minishell_prototypes.h b/headers/minishell_prototypes.h
index 48b9d30..4e2fcee 100644
--- a/headers/minishell_prototypes.h
+++ b/headers/minishell_prototypes.h
@@ -56,6 +56,7 @@ int		simple_command_builtin(t_cmd *cmd, t_all *c);
 int		builtin_cd(int argc, char *argv[], t_all *c);
 int		builtin_pwd(int argc, char *argv[], t_all *c);
 int		builtin_export(int argc, char *argv[], t_all *c);
+int		export_var(char *arg);
 int		builtin_unset(int argc, char *argv[], t_all *c);
 int		builtin_exit(int argc, char *argv[], t_all *c);
 int		builtin_env(int argc, char *argv[], t_all *c);
diff --git a/srcs/builtins/export.c b/srcs/builtins/export.c
index 4955f77..2d4e285 100644
--- a/srcs/builtins/export.c
+++ b/srcs/builtins/export.c
@@ -12,7 +12,6 @@
 
 #include "minishell.h"
 
-static int	export_var(char *arg);
 static int	change_var_value(char *arg, char *var_name);
 
 #define ERR_ID 1
@@ -32,7 +31,7 @@ int	builtin_export(int argc, char *argv[], t_all *c)
 	{
 		ret = export_var(argv[i]);
 		if (ret == -1)
-			return (EXIT_FAILURE);
+			return (ft_reti_perror(EXIT_FAILURE, CMD", export_var()"));
 		else if (ret == ERR_ID)
 			exit_value = EXIT_FAILURE;
 		if (ft_strncmp(argv[i], "PATH=", 5) == 0)
@@ -44,7 +43,9 @@ int	builtin_export(int argc, char *argv[], t_all *c)
 
 // in complete shell, must mark arguments for export
 // (Not implemented in minishell)
-static int	export_var(char *arg)
+// arg == var_name[=value]
+// return "-1" on alloc error 
+int	export_var(char *arg)
 {
 	char	**var_split;
 	int		ret;
@@ -52,7 +53,7 @@ static int	export_var(char *arg)
 	ret = 0;
 	var_split = ft_split(arg, '=');
 	if (!var_split)
-		return (ft_reti_perror(-1, CMD", ft_split()"));
+		return (-1);
 	if (!ft_is_posix_name(var_split[0]))
 	{
 		shell_error("export: ", var_split[0], ERR_ID_STR, 0);
diff --git a/srcs/init.c b/srcs/init.c
index 052b17a..db93acd 100644
--- a/srcs/init.c
+++ b/srcs/init.c
@@ -6,7 +6,7 @@
 /*   By: lperrey <lperrey@student.42.fr>            +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2021/10/08 09:22:12 by lperrey           #+#    #+#             */
-/*   Updated: 2021/12/04 15:11:20 by lperrey          ###   ########.fr       */
+/*   Updated: 2021/12/08 06:27:51 by lperrey          ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -14,6 +14,7 @@
 
 static char	*init_prompt_base(void);
 static int	init_readline_hook(void);
+static int	shlvl_init(void);
 
 int	init(t_all *c)
 {
@@ -24,30 +25,42 @@ int	init(t_all *c)
 	rl_startup_hook = NULL;
 	environ = ft_dup_2d_arr(environ, (t_dup_f)ft_strdup);
 	if (!environ)
-		return (ft_reti_perror(0, "ft_dup_2d_arr(environ) error"));
+		return (ft_reti_perror(0, "ft_dup_2d_arr(environ)"));
 	c->path = retrieve_path();
+	if (!shlvl_init())
+		return (ft_reti_perror(0, "shlvl_init()"));
 	c->prompt_base = init_prompt_base();
 	if (!c->prompt_base)
-		return (ft_reti_perror(0, "init_prompt_base() error"));
+		return (ft_reti_perror(0, "init_prompt_base()"));
 	c->prompt = init_prompt(c->prompt_base);
 	if (!c->prompt)
-		return (ft_reti_perror(0, "init_prompt() error"));
+		return (ft_reti_perror(0, "init_prompt()"));
 	set_signals_behaviour();
 	return (1);
 }
 
-char	**retrieve_path(void)
+static int	shlvl_init(void)
 {
-	char	*path;
-	char	**path_split;
+	char	*tmp;
 
-	path = getenv("PATH");
-	if (!path)
-		return (ft_retp_print(NULL, "minishell: Warning, $PATH not set\n", 2));
-	path_split = ft_split(path, ':');
-	if (!path_split)
-		return (ft_retp_perror(NULL, "retrieve_path()"));
-	return (path_split);
+	tmp = getenv("SHLVL");
+	if (tmp && ft_isdigit_str(tmp))
+	{
+		tmp = ft_itoa(ft_atoi(tmp) + 1);
+		if (!tmp)
+			return (0);
+		tmp = ft_strjoinfree_s2("SHLVL=", tmp);
+		if (!tmp)
+			return (0);
+		if (export_var(tmp) == -1)
+			return (0);
+	}
+	else
+	{
+		if (export_var("SHLVL=1") == -1)
+			return (0);
+	}
+	return (1);
 }
 
 static char	*init_prompt_base(void)
diff --git a/srcs/retrieve_path.c b/srcs/retrieve_path.c
new file mode 100644
index 0000000..27ee2d2
--- /dev/null
+++ b/srcs/retrieve_path.c
@@ -0,0 +1,27 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   retrieve_path.c                                    :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: lperrey <lperrey@student.42.fr>            +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2021/10/08 09:22:12 by lperrey           #+#    #+#             */
+/*   Updated: 2021/12/08 06:27:23 by lperrey          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "minishell.h"
+
+char	**retrieve_path(void)
+{
+	char	*path;
+	char	**path_split;
+
+	path = getenv("PATH");
+	if (!path)
+		return (ft_retp_print(NULL, "minishell: Warning, $PATH not set\n", 2));
+	path_split = ft_split(path, ':');
+	if (!path_split)
+		return (ft_retp_perror(NULL, "retrieve_path()"));
+	return (path_split);
+}