diff --git a/srcs/built_in/cd.c b/srcs/built_in/cd.c
new file mode 100644
index 0000000..f2e9e7a
--- /dev/null
+++ b/srcs/built_in/cd.c
@@ -0,0 +1,203 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   cd.c                                               :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: apommier <apommier@student.42.fr>          +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2022/03/21 18:30:26 by sadjigui          #+#    #+#             */
+/*   Updated: 2022/04/09 04:55:48 by apommier         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "../../includes/minishell.h"
+
+void	ft_ls(char *input)
+{
+	int	i;
+
+	DIR *dir;
+	struct dirent *sd;
+
+	i = ft_strlen("ls");
+	// if (input[i] == ' ')
+	// {
+	//printf("ici\n");
+		while (input[i] && input[i] != ' ')
+			i++;
+	// }
+	// printf("[%c]\n", input[i]);
+	// printf("[%c]\n", input[i+1]);
+
+	dir = opendir(".");
+	if (dir == NULL)
+	{
+		printf("stop\n");
+		return ;
+	}
+	// printf("dir --> %s\n", dir[0]);
+	while ((sd=readdir(dir)) != NULL)
+	{
+		printf(" >> %s\n", sd->d_name);
+	}
+	closedir(dir);
+}
+
+void	del_one(t_s_cmd *cmd)
+{
+	int	i;
+	char *r;
+
+	i = ft_strlen(cmd->big_cmd->env[find_pwd(cmd)]);
+	// printf("%s\n", cmd->args[6]);
+	// while (cmd->big_cmd->env[find_pwd(cmd)][i])
+	// 	i++;
+	while (cmd->big_cmd->env[find_pwd(cmd)][i] != '/')
+		i--;
+	r = ft_substr(cmd->big_cmd->env[find_pwd(cmd)], 0, i);
+	// printf ("-->%s\n", r);
+	// free(cmd->big_cmd->env[find_pwd(cmd)]);
+	if (r)
+		cmd->big_cmd->env[find_pwd(cmd)] = ft_strdup(r);
+	else
+		cmd->big_cmd->env[find_pwd(cmd)] = ft_strdup("PWD=/");
+
+	if (r)
+		free(r);
+}
+
+void	add_one(t_s_cmd *cmd, char *str)
+{
+	char *r;
+
+	r = ft_strjoin(cmd->big_cmd->env[find_pwd(cmd)], "/");
+	r = ft_strjoin(r, str);
+	//free(cmd->big_cmd->env[find_pwd(cmd)]);
+	cmd->big_cmd->env[find_pwd(cmd)] = ft_strdup(r);
+	free(r);
+}
+
+void	change_path(t_s_cmd *cmd)
+{
+	char **tab;
+	int i;
+
+	i = 0;
+	tab = ft_split(cmd->args[1], '/');
+	while (cmd->big_cmd->env[i])
+	{
+		if (ft_strncmp(cmd->big_cmd->env[i], "OLDPWD=", 7) == 0)
+			break ;
+		i++;
+	}
+	// printf("%d\n", i);
+	/*if (cmd->big_cmd->env[i])
+		free(cmd->big_cmd->env[i]);*/
+	cmd->big_cmd->env[i] = ft_strjoin("OLD", cmd->big_cmd->env[find_pwd(cmd)]);
+	i = 0;
+	while (tab[i])
+	{
+		// printf("%d -> %s\n", tab_len(tab), tab[i]);
+		// if (tab_len(tab) < 2)
+		// 	break ;
+		if (ft_strcmp(tab[i], "..") == 0)
+			del_one(cmd);
+		else
+			add_one(cmd, tab[i]);
+
+		i++;
+	}
+}
+
+void	reboot_pwd(t_s_cmd *cmd, int i)
+{
+	char	*str;
+
+	while (i > 3)
+	{
+		if (chdir("..") == 0)
+			del_one(cmd);
+		i--;
+	}
+	str = ft_substr(cmd->args[1], 2, ft_strlen(cmd->args[1]));
+	cmd->args[1] = ft_strdup(str);
+	free(str);
+}
+
+int	find_it(char **str, char *s)
+{
+	int i;
+
+	i = 0;
+	while (str[i] && ft_strncmp(str[i], s, ft_strlen(s)))
+		i++;
+	if (str[i] == NULL)
+		return (0);
+	return (i);
+}
+
+void	open_directory(t_s_cmd *cmd)
+{
+	char **str;
+	int j;
+
+	str = ft_split(cmd->big_cmd->env[find_pwd(cmd)], '/');
+	// printf("jojo\n");
+	// printf("%s\n", cmd->big_cmd->env[find_it(cmd->big_cmd->env, "HOME=")]);
+	if (find_it(cmd->big_cmd->env, "HOME=") == 0)
+	{
+		//printf("%d\n", tab_len(cmd->args[1]));
+		printf("bash: cd: HOME not set\n");
+		return ;
+	}
+	j = tab_len(str);
+	if (!cmd->args[1])
+	{
+		// reboot_pwd(cmd, j);
+		// if (tab_len(str) > 3)
+		// {
+		// 	while (j-- > 3)
+		// 		if (chdir("..") == 0)
+		// 			del_one(cmd);
+		// }
+		// else
+		// {
+			char *p = ft_substr(cmd->big_cmd->env[find_it(cmd->big_cmd->env, "HOME=")], 5, ft_strlen(cmd->big_cmd->env[find_it(cmd->big_cmd->env, "HOME=")]));
+            printf("%s\n", p);
+			if (chdir(p) == 0)
+			{
+				cmd->big_cmd->env[find_it(cmd->big_cmd->env, "OLDPWD=")] = ft_strjoin("OLD", cmd->big_cmd->env[find_pwd(cmd)]);
+				cmd->big_cmd->env[find_pwd(cmd)] = ft_strjoin("PWD=", p);
+			}
+			free(p);
+			// printf("%s\n", p);
+		// }
+	}
+	if (tab_len(cmd->args) == 2)
+	{
+		if (cmd->args[1][0] == '~')
+			reboot_pwd(cmd, j);
+		if (chdir(cmd->args[1]) == 0)
+			change_path(cmd);
+	}
+	if (str)
+		free_double(str);
+}
+
+void	ft_pwd(t_s_cmd *cmd)
+{
+	int	i;
+	int j;
+
+	j = 0;
+	i = 0;
+	while (cmd->big_cmd->env[find_pwd(cmd)][j] != '=')
+		j++;
+	j += 1;
+	while (cmd->big_cmd->env[find_pwd(cmd)][j])
+	{
+		write (1, &cmd->big_cmd->env[find_pwd(cmd)][j], 1);
+		j++;
+	}
+	write(1, "\n", 1);
+}
\ No newline at end of file
diff --git a/srcs/built_in/export.c b/srcs/built_in/export.c
index a6104a0..74c6b89 100644
--- a/srcs/built_in/export.c
+++ b/srcs/built_in/export.c
@@ -78,8 +78,10 @@ void	ft_export_variable(t_s_cmd *cmd, char *variable)
 	{
 		if (ft_strncmp(unset, cmd->big_cmd->env[i], ft_strlen(unset)) == 0)
 		{
-			find_variable(unset, cmd);
-			break ;
+			free(cmd->big_cmd->env[i]);
+			cmd->big_cmd->env[i] = dest;
+			// find_variable(unset, cmd);
+			return ;
 		}
 		i++;
 	}
diff --git a/srcs/built_in/init_builtin.c b/srcs/built_in/init_builtin.c
new file mode 100644
index 0000000..36de6c5
--- /dev/null
+++ b/srcs/built_in/init_builtin.c
@@ -0,0 +1,134 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   init_builtin.c                                     :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: apommier <apommier@student.42.fr>          +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2022/02/28 17:17:01 by sadjigui          #+#    #+#             */
+/*   Updated: 2022/04/09 04:55:48 by apommier         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "../../includes/minishell.h"
+
+// void	join_variable(t_s_cmd *cmd, char **v_v, int size, char **tab)
+// {
+// 	char *str;
+// 	char *tmp;
+//
+// 	while (tab[size])
+// 	{
+// 		cmd->big_cmd->env[size] = ft_strdup(tab[size]);
+// 		// printf("tmp----%s\n", tmp[size]);
+// 		// printf("envy---%s\n", cmd->big_cmd->env[size]);
+// 		size++;
+// 	}
+// 	str = ft_strjoin(v_v[0], "=");
+// 	tmp = ft_strdup(str);
+// 	free(str);
+// 	str = ft_strjoin(tmp,v_v[1]);
+// 	cmd->big_cmd->env[size] = ft_strdup(str);
+// 	printf("ici\n");
+// 	free(str);
+// 	free(tmp);
+// 	cmd->big_cmd->env[size + 1] = NULL;
+// }
+
+void	register_env(t_s_cmd *cmd, char *variable)
+{
+	char	**tmp = NULL;
+	int i;
+	i = 0;
+
+	// tmp = NULL;
+	// printf("TABLEN %d", tab_len(cmd->big_cmd->env));
+	tmp = (char **)malloc(sizeof(char *) * (tab_len(cmd->big_cmd->env) + 2));
+	if(!tmp)
+		printf("no tmp\n");
+	while (cmd->big_cmd->env[i])
+	{
+		tmp[i] = ft_strdup(cmd->big_cmd->env[i]);
+		// printf("ici\n");
+		// printf("%s\n", "let me in");
+		i++;
+	}
+	// printf("i: %d %s\n",i,tmp[i]);
+	// printf("%s\n", "brrrrrrr");
+	tmp[i] = ft_strdup(variable);
+	tmp[i + 1] = NULL;
+	// printf("debut %p\n", tmp[2]);
+	// printf("1--------------------\n");
+	free_double(cmd->big_cmd->env);
+	// printf("1--------------------\n");
+	cmd->big_cmd->env = (char **)malloc(sizeof(char *) * (tab_len(tmp) + 1));
+	if (!cmd->big_cmd->env)
+		printf("no env\n");
+	i = 0;
+	while (tmp[i])
+	{
+		cmd->big_cmd->env[i] = ft_strdup(tmp[i]);
+		// if (tmp[size])
+		// 	free(tmp[size]);
+		// printf("tmp----%s\n", tmp[size]);
+		// printf("envy---%s\n", cmd->big_cmd->env[size]);
+		i++;
+	}
+	cmd->big_cmd->env[i] = NULL;
+	// printf("2--------------------\n");
+	if (tmp)
+		free_double(tmp);
+	// printf("2--------------------\n");
+	// int i = 0;
+	// while (tmp[i])
+	// {
+	// 	printf("nano");
+	// 	free(tmp[i]);
+	// 	i++;
+	// }
+	// if(tmp)
+	// 	free(tmp);
+	// join_variable(cmd, variable, size, tmp);
+}
+
+void	ft_env(t_s_cmd *cmd, char **env)
+{
+	int	i;
+
+	i = 0;
+	while (env[i])
+		i++;
+	cmd->big_cmd->env = ft_calloc(sizeof(char *), i + 1);
+	i = 0;
+	while (env[i])
+	{
+		cmd->big_cmd->env[i] = ft_strdup(env[i]);
+		i++;
+	}
+	cmd->big_cmd->env[i] = NULL;
+}
+
+int		find_pwd(t_s_cmd *cmd)
+{
+	int	i;
+
+	i = 0;
+	while (cmd->big_cmd->env[i] && ft_strncmp(cmd->big_cmd->env[i], "PWD=", 4) != 0)
+		i++;
+	return (i);
+}
+
+void	init_s_cmd(t_s_cmd *cmd, char **env)
+{
+	ft_env(cmd, env);
+}
+
+int	tab_len(char **tab)
+{
+	int i;
+
+	i = 0;
+	while (tab[i])
+		i++;
+	return (i);
+}
\ No newline at end of file
diff --git a/srcs/built_in/unset.c b/srcs/built_in/unset.c
index 0bc662a..f96fdd7 100644
--- a/srcs/built_in/unset.c
+++ b/srcs/built_in/unset.c
@@ -28,7 +28,7 @@ void	unset_variable(t_s_cmd *cmd, int i)
 	{
 		// if (a == i)
 		// 	a++;
-		printf("%s\n", cmd->big_cmd->env[a]);
+		// printf("%s\n", cmd->big_cmd->env[a]);
 		if (a != i)
 		{
 			tmp[b] = ft_substr(cmd->big_cmd->env[a], 0, ft_strlen(cmd->big_cmd->env[a]));
diff --git a/vgcore.12673 b/vgcore.12673
new file mode 100644
index 0000000..4ea4a6c
Binary files /dev/null and b/vgcore.12673 differ