From 29a8e10e63f7e4ed1b08c4984c6c01431d3ccb06 Mon Sep 17 00:00:00 2001
From: Christopher Uhlig
Date: Fri, 9 Aug 2024 19:08:18 +0200
Subject: first ideas of my understanding

---
 src/builtins_part_one.c | 173 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 173 insertions(+)
 create mode 100644 src/builtins_part_one.c

diff --git a/src/builtins_part_one.c b/src/builtins_part_one.c
new file mode 100644
index 0000000..d7ab540
--- /dev/null
+++ b/src/builtins_part_one.c
@@ -0,0 +1,173 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   builtins_part_one.c                                :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: chuhlig <chuhlig@student.42.fr>            +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/08/09 17:01:16 by chuhlig           #+#    #+#             */
+/*   Updated: 2024/08/09 19:07:31 by chuhlig          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+int	echo(char **av)
+{
+	int	i;
+	int	f;
+
+	i = 1;
+	if (av[1][0] == '\0')
+	{
+		write(1, "\n", 1);
+		return (1);
+	}
+	if (ft_strcmp(av[1], "-n"))
+	{
+		i++;
+		f = 1;
+	}
+	while (av[i])
+	{
+		write(1, &av[1], ft_strlen(av[i]));
+		i++;
+	}
+	if (f)
+		write(1, "\n", 1);
+	return (0);
+}
+// Und args wären bei
+// echo Hello World
+// dann
+// echo, Hello und World 
+
+
+// Die Builtins haben bitte int als return type. 0 = Success, 1 = Error usw.
+// Als Parameter kann ich dir die das hier geben:
+// char **args
+// Aufpassen: args[0] ist der Name des Commands.
+// t_env *env
+// Hier hast du alle Variablen drin.
+// Schau dir dafür am besten env.h an.
+
+
+
+// 2-G-4:~ chuhlig$ echo -n hello
+// hello2-G-4:~ chuhlig$ echo test -n hello
+// test -n hello
+   
+
+
+// minishell % echo -n "Das ist"
+// echo -n " ein Beispiel"
+// echo " für echo -n."
+
+// 2-G-4:~ chuhlig$ echo 'hello world'
+// hello world
+// 2-G-4:~ chuhlig$ echo hello'world'
+// helloworld
+// 2-G-4:~ chuhlig$ echo hello""world
+// helloworld
+// 2-G-4:~ chuhlig$ echo ''
+
+// 2-G-4:~ chuhlig$ echo "$PWD"
+// /Users/chuhlig
+// 2-G-4:~ chuhlig$ echo '$PWD'
+// $PWD
+// 2-G-4:~ chuhlig$ echo "aspas ->'"
+// aspas ->'
+// 2-G-4:~ chuhlig$ echo "aspas -> ' "
+// aspas -> ' 
+// 2-G-4:~ chuhlig$ echo 'aspas ->"'
+// aspas ->"
+// 2-G-4:~ chuhlig$ echo 'aspas -> " '
+// aspas -> " 
+// 2-G-4:~ chuhlig$ echo "> >> < * ? [ ] | ; [ ] || && ( ) & # $ \ <<"
+// > >> < * ? [ ] | ; [ ] || && ( ) & # $ \ <<
+// 2-G-4:~ chuhlig$ echo '> >> < * ? [ ] | ; [ ] || && ( ) & # $ \ <<'
+// > >> < * ? [ ] | ; [ ] || && ( ) & # $ \ <<
+// 2-G-4:~ chuhlig$ echo "exit_code ->$? user ->$USER home -> $HOME"
+// exit_code ->0 user ->chuhlig home -> /Users/chuhlig
+// 2-G-4:~ chuhlig$ echo 'exit_code ->$? user ->$USER home -> $HOME'
+// exit_code ->$? user ->$USER home -> $HOME
+// 2-G-4:~ chuhlig$ echo "$"
+// $
+// 2-G-4:~ chuhlig$ echo '$'
+// $
+// 2-G-4:~ chuhlig$ echo $
+// $
+
+// 2-G-4:~ chuhlig$ echo "test" -n hello
+// test -n hello
+// 2-G-4:~ chuhlig$ echo -n "test" -n hello
+// test -n hello2-G-4:~ chuhlig$ echo -n "test" echo -n hello
+// test echo -n hello2-G-4:~ chuhlig$ 
+
+
+
+// 2-G-4:~ chuhlig$ echo -n "test1 test2" test3
+// test1 test2 test32-G-4:~ chuhlig$ 
+// 2-G-4:~ chuhlig$ echo -n " test1 test2 " 'test3 '
+//  test1 test2  test3 2-G-4:~ chuhlig$ 
+// 2-G-4:~ chuhlig$ echo -n test1test2
+// test1test22-G-4:~ chuhlig$ 
+// 2-G-4:~ chuhlig$ echo test1 -n
+// test1 -n
+// 2-G-4:~ chuhlig$ 
+// 2-G-4:~ chuhlig$ echo "test1 -n"
+// test1 -n
+// 2-G-4:~ chuhlig$ 
+// 2-G-4:~ chuhlig$ echo -n -n test1
+// test12-G-4:~ chuhlig$ 
+// 2-G-4:~ chuhlig$ echo -n -n -n -n -n test1
+// test12-G-4:~ chuhlig$ 
+// 2-G-4:~ chuhlig$ echo -
+// -
+// 2-G-4:~ chuhlig$ echo --
+// --
+// 2-G-4:~ chuhlig$ 
+// 2-G-4:~ chuhlig$ echo "  -nn "
+//   -nn 
+// 2-G-4:~ chuhlig$ 
+// 2-G-4:~ chuhlig$ echo "-n test1 -n test2"
+// -n test1 -n test2
+// 2-G-4:~ chuhlig$ 
+// 2-G-4:~ chuhlig$ echo "test1 -n test2"
+// test1 -n test2
+// 2-G-4:~ chuhlig$ 
+// 2-G-4:~ chuhlig$ echo ~42
+// ~42
+// 2-G-4:~ chuhlig$ 
+// 2-G-4:~ chuhlig$ echo -n -n -nasd
+// -nasd2-G-4:~ chuhlig$ 
+// 2-G-4:~ chuhlig$ echo -n -n -n-nnnnn
+// -n-nnnnn2-G-4:~ chuhlig$ 
+// 2-G-4:~ chuhlig$ echo -n -nnnnnnn -n -nnn -nnnnn -n-n
+// -n-n2-G-4:~ chuhlig$ 
+// 2-G-4:~ chuhlig$ echo -n -nnnnnnn -n -nnn -nnnnn -n feel my pain
+// feel my pain2-G-4:~ chuhlig$ 
+// 2-G-4:~ chuhlig$ echo -n -n -n-n
+// -n-n2-G-4:~ chuhlig$ 
+// 2-G-4:~ chuhlig$ echo "'totally logical'"
+// 'totally logical'
+// 2-G-4:~ chuhlig$ echo 'totally logical'
+// totally logical
+// 2-G-4:~ chuhlig$ echo ''totally logical''
+// totally logical
+// 2-G-4:~ chuhlig$ echo ""'totally logical'""
+// totally logical
+
+// 2-G-4:~ chuhlig$ eCho
+
+// 2-G-4:~ chuhlig$ eChO
+
+// 2-G-4:~ chuhlig$ eCHO
+
+// 2-G-4:~ chuhlig$ ECHO
+int	pwd_builtin(void)
+{
+	char	cwd[1028];
+
+	getcwd(cwd, sizeof(cwd));
+	printf("%s\n", cwd);
+	return (0);
+}
\ No newline at end of file
-- 
cgit v1.2.3


From d9fcd5d84006f312dc417124c697341f2d94de6b Mon Sep 17 00:00:00 2001
From: Christopher Uhlig
Date: Sun, 18 Aug 2024 04:30:20 +0200
Subject: 2nd push with unset export exit and cd

---
 src/builtins_part_one.c | 267 ++++++++++++++++++++++++------------------------
 1 file changed, 135 insertions(+), 132 deletions(-)

diff --git a/src/builtins_part_one.c b/src/builtins_part_one.c
index d7ab540..fc0fdab 100644
--- a/src/builtins_part_one.c
+++ b/src/builtins_part_one.c
@@ -6,16 +6,19 @@
 /*   By: chuhlig <chuhlig@student.42.fr>            +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2024/08/09 17:01:16 by chuhlig           #+#    #+#             */
-/*   Updated: 2024/08/09 19:07:31 by chuhlig          ###   ########.fr       */
+/*   Updated: 2024/08/18 04:28:56 by chuhlig          ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
+#include "env.h"
+
 int	echo(char **av)
 {
 	int	i;
 	int	f;
 
 	i = 1;
+	f = 1;
 	if (av[1][0] == '\0')
 	{
 		write(1, "\n", 1);
@@ -24,7 +27,7 @@ int	echo(char **av)
 	if (ft_strcmp(av[1], "-n"))
 	{
 		i++;
-		f = 1;
+		f = 0;
 	}
 	while (av[i])
 	{
@@ -35,139 +38,139 @@ int	echo(char **av)
 		write(1, "\n", 1);
 	return (0);
 }
-// Und args wären bei
-// echo Hello World
-// dann
-// echo, Hello und World 
-
-
-// Die Builtins haben bitte int als return type. 0 = Success, 1 = Error usw.
-// Als Parameter kann ich dir die das hier geben:
-// char **args
-// Aufpassen: args[0] ist der Name des Commands.
-// t_env *env
-// Hier hast du alle Variablen drin.
-// Schau dir dafür am besten env.h an.
-
-
-
-// 2-G-4:~ chuhlig$ echo -n hello
-// hello2-G-4:~ chuhlig$ echo test -n hello
-// test -n hello
-   
-
-
-// minishell % echo -n "Das ist"
-// echo -n " ein Beispiel"
-// echo " für echo -n."
-
-// 2-G-4:~ chuhlig$ echo 'hello world'
-// hello world
-// 2-G-4:~ chuhlig$ echo hello'world'
-// helloworld
-// 2-G-4:~ chuhlig$ echo hello""world
-// helloworld
-// 2-G-4:~ chuhlig$ echo ''
-
-// 2-G-4:~ chuhlig$ echo "$PWD"
-// /Users/chuhlig
-// 2-G-4:~ chuhlig$ echo '$PWD'
-// $PWD
-// 2-G-4:~ chuhlig$ echo "aspas ->'"
-// aspas ->'
-// 2-G-4:~ chuhlig$ echo "aspas -> ' "
-// aspas -> ' 
-// 2-G-4:~ chuhlig$ echo 'aspas ->"'
-// aspas ->"
-// 2-G-4:~ chuhlig$ echo 'aspas -> " '
-// aspas -> " 
-// 2-G-4:~ chuhlig$ echo "> >> < * ? [ ] | ; [ ] || && ( ) & # $ \ <<"
-// > >> < * ? [ ] | ; [ ] || && ( ) & # $ \ <<
-// 2-G-4:~ chuhlig$ echo '> >> < * ? [ ] | ; [ ] || && ( ) & # $ \ <<'
-// > >> < * ? [ ] | ; [ ] || && ( ) & # $ \ <<
-// 2-G-4:~ chuhlig$ echo "exit_code ->$? user ->$USER home -> $HOME"
-// exit_code ->0 user ->chuhlig home -> /Users/chuhlig
-// 2-G-4:~ chuhlig$ echo 'exit_code ->$? user ->$USER home -> $HOME'
-// exit_code ->$? user ->$USER home -> $HOME
-// 2-G-4:~ chuhlig$ echo "$"
-// $
-// 2-G-4:~ chuhlig$ echo '$'
-// $
-// 2-G-4:~ chuhlig$ echo $
-// $
-
-// 2-G-4:~ chuhlig$ echo "test" -n hello
-// test -n hello
-// 2-G-4:~ chuhlig$ echo -n "test" -n hello
-// test -n hello2-G-4:~ chuhlig$ echo -n "test" echo -n hello
-// test echo -n hello2-G-4:~ chuhlig$ 
-
-
-
-// 2-G-4:~ chuhlig$ echo -n "test1 test2" test3
-// test1 test2 test32-G-4:~ chuhlig$ 
-// 2-G-4:~ chuhlig$ echo -n " test1 test2 " 'test3 '
-//  test1 test2  test3 2-G-4:~ chuhlig$ 
-// 2-G-4:~ chuhlig$ echo -n test1test2
-// test1test22-G-4:~ chuhlig$ 
-// 2-G-4:~ chuhlig$ echo test1 -n
-// test1 -n
-// 2-G-4:~ chuhlig$ 
-// 2-G-4:~ chuhlig$ echo "test1 -n"
-// test1 -n
-// 2-G-4:~ chuhlig$ 
-// 2-G-4:~ chuhlig$ echo -n -n test1
-// test12-G-4:~ chuhlig$ 
-// 2-G-4:~ chuhlig$ echo -n -n -n -n -n test1
-// test12-G-4:~ chuhlig$ 
-// 2-G-4:~ chuhlig$ echo -
-// -
-// 2-G-4:~ chuhlig$ echo --
-// --
-// 2-G-4:~ chuhlig$ 
-// 2-G-4:~ chuhlig$ echo "  -nn "
-//   -nn 
-// 2-G-4:~ chuhlig$ 
-// 2-G-4:~ chuhlig$ echo "-n test1 -n test2"
-// -n test1 -n test2
-// 2-G-4:~ chuhlig$ 
-// 2-G-4:~ chuhlig$ echo "test1 -n test2"
-// test1 -n test2
-// 2-G-4:~ chuhlig$ 
-// 2-G-4:~ chuhlig$ echo ~42
-// ~42
-// 2-G-4:~ chuhlig$ 
-// 2-G-4:~ chuhlig$ echo -n -n -nasd
-// -nasd2-G-4:~ chuhlig$ 
-// 2-G-4:~ chuhlig$ echo -n -n -n-nnnnn
-// -n-nnnnn2-G-4:~ chuhlig$ 
-// 2-G-4:~ chuhlig$ echo -n -nnnnnnn -n -nnn -nnnnn -n-n
-// -n-n2-G-4:~ chuhlig$ 
-// 2-G-4:~ chuhlig$ echo -n -nnnnnnn -n -nnn -nnnnn -n feel my pain
-// feel my pain2-G-4:~ chuhlig$ 
-// 2-G-4:~ chuhlig$ echo -n -n -n-n
-// -n-n2-G-4:~ chuhlig$ 
-// 2-G-4:~ chuhlig$ echo "'totally logical'"
-// 'totally logical'
-// 2-G-4:~ chuhlig$ echo 'totally logical'
-// totally logical
-// 2-G-4:~ chuhlig$ echo ''totally logical''
-// totally logical
-// 2-G-4:~ chuhlig$ echo ""'totally logical'""
-// totally logical
-
-// 2-G-4:~ chuhlig$ eCho
-
-// 2-G-4:~ chuhlig$ eChO
-
-// 2-G-4:~ chuhlig$ eCHO
-
-// 2-G-4:~ chuhlig$ ECHO
-int	pwd_builtin(void)
+
+int	pwd(void)
 {
 	char	cwd[1028];
 
 	getcwd(cwd, sizeof(cwd));
 	printf("%s\n", cwd);
 	return (0);
-}
\ No newline at end of file
+}
+
+int	env(char **env)
+{
+	int	i;
+
+	i = 0;
+	while (env[i] != NULL)
+	{
+		printf("%s\n", env[i]);
+		i++;
+	}
+	return (0);
+}
+
+int	cd(char **av)
+{
+
+	if(av[1] == NULL)
+	{
+	while (env[i] != NULL) // home command
+	{
+		if (ft_strncmp(env[i], "HOME=", 5) == 0)
+			break ;
+		i++;
+	}
+	// before chdir we need to update old pwd
+	// getcwd(cwd, sizeof(cwd));
+	// str = ft_strjoin("PWD= or old pwd=", cwd);
+	// env[i] = str;
+	if(chdir(env[i] + 5) == -1)
+			return;
+	}
+	else
+		//update old pwd
+		//
+		while (env[i] != NULL) // home command
+		{
+		if (ft_strncmp(env[i], "old PWD=", 5) == 0)
+			break ;
+		i++;
+		}
+		str = ft_strjoin("old pwd=", cwd);
+		env[i] = str;
+		//
+		chdir(av[1] ==  -1);
+			return ;
+	// udpate pwd
+	while (env[i] != NULL) // home command
+	{
+		if (ft_strncmp(env[i], "PWD=", 5) == 0)
+			break ;
+		i++;
+	}
+	str = ft_strjoin("PWD=", cwd);
+	env[i] = str;
+}
+
+// exit
+
+
+int	exit(char *av)
+{
+	freenode free toke free sequence stop repl free env
+	clear history
+}
+//joar
+
+//export
+
+int	export(char **av, t_env **env)
+{
+	char	*tmp;
+	if(tmp = ft_strchr(av[1]))
+	{
+		tmp = '\0';
+		t_env *current;
+		current = *env;
+		while(current)
+		{
+			if (strcmp(current->name, av[1]) == 0)
+			{
+                free(current->value);
+                current->value = ft_strdup(tmp + 1);
+                break;
+            }
+            current = current->next;
+		}
+		if (!current)
+		{
+            current = malloc(sizeof(t_env));
+            current->name = ft_strdup(av[1]);
+            current->value = ft_strdup(tmp + 1);
+            current->next = *env;
+            *env = current;
+        }
+		return (0);
+	}
+	else
+		syntax return 1;
+}
+
+//unset
+
+int	unset(char **av, t_env **env)
+{
+	t_env	*current;
+	t_env	*prev;
+	
+	current = env;
+	prev = NULL;
+	while (current)
+	{
+		if(ft_strcmp(current->name, av[1] == 0))
+			break ;
+		prev = current;
+		current = current->next;
+	}
+	if(current)
+	{
+		if(prev)
+			prev->next = current->next;
+		else
+			*env = current->next
+		free(t_env);
+	}
+	return (0);
+}
-- 
cgit v1.2.3


From 8fb55b598b6a2f7565fe4a5f82186dc04ee6e7eb Mon Sep 17 00:00:00 2001
From: Christopher Uhlig
Date: Thu, 29 Aug 2024 15:55:46 +0200
Subject: temporary here get envlst

---
 src/builtins_part_one.c | 36 ++++++++++++++++++++++++++++++++----
 1 file changed, 32 insertions(+), 4 deletions(-)

diff --git a/src/builtins_part_one.c b/src/builtins_part_one.c
index fc0fdab..6ca0caa 100644
--- a/src/builtins_part_one.c
+++ b/src/builtins_part_one.c
@@ -6,7 +6,7 @@
 /*   By: chuhlig <chuhlig@student.42.fr>            +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2024/08/09 17:01:16 by chuhlig           #+#    #+#             */
-/*   Updated: 2024/08/18 04:28:56 by chuhlig          ###   ########.fr       */
+/*   Updated: 2024/08/29 14:24:13 by chuhlig          ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -116,10 +116,11 @@ int	exit(char *av)
 
 //export
 
+// add a part to append it to list and maybe also check bc export pwd or home stuf 
 int	export(char **av, t_env **env)
 {
 	char	*tmp;
-	if(tmp = ft_strchr(av[1]))
+	if(tmp = ft_strchr(av[1], '='))
 	{
 		tmp = '\0';
 		t_env *current;
@@ -149,14 +150,17 @@ int	export(char **av, t_env **env)
 }
 
 //unset
-
+//for unset as well check and for name part
 int	unset(char **av, t_env **env)
 {
 	t_env	*current;
 	t_env	*prev;
-	
+	char	*tmp;
+
 	current = env;
 	prev = NULL;
+	tmp = ft_strchr(av[1], '=');
+	tmp = '\0';
 	while (current)
 	{
 		if(ft_strcmp(current->name, av[1] == 0))
@@ -174,3 +178,27 @@ int	unset(char **av, t_env **env)
 	}
 	return (0);
 }
+
+void	getenvlst(t_env **env, char **en)
+{
+	char	*tmp;
+	int		i;
+	int		t;
+	t_env 	*current;
+
+	t = 0;
+	i = 0;
+	while (en[i] != NULL)
+	{
+		tmp = ft_strchr(en[i], '=');
+		tmp = '\0';
+		current = *env;
+        current = malloc(sizeof(t_env));
+        current->name = ft_strdup(en[i]);
+        current->value = ft_strdup(tmp + 1);
+        current->next = *env;
+        *env = current;
+		i++;
+	}
+	return (0);
+}
\ No newline at end of file
-- 
cgit v1.2.3


From 85ddabacb816a04fa86875d0aab6ec6337e132ed Mon Sep 17 00:00:00 2001
From: Christopher Uhlig
Date: Thu, 29 Aug 2024 15:56:23 +0200
Subject: just date

---
 src/main.c      | 2 +-
 src/tokenizer.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/main.c b/src/main.c
index 8523b9e..596b611 100644
--- a/src/main.c
+++ b/src/main.c
@@ -6,7 +6,7 @@
 /*   By: chuhlig <chuhlig@student.42.fr>            +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2024/06/22 17:14:03 by dkaiser           #+#    #+#             */
-/*   Updated: 2024/07/18 16:44:14 by chuhlig          ###   ########.fr       */
+/*   Updated: 2024/08/26 19:55:57 by chuhlig          ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
diff --git a/src/tokenizer.c b/src/tokenizer.c
index 34685ac..dfdffe1 100644
--- a/src/tokenizer.c
+++ b/src/tokenizer.c
@@ -6,7 +6,7 @@
 /*   By: chuhlig <chuhlig@student.42.fr>            +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2024/06/28 20:55:50 by chuhlig           #+#    #+#             */
-/*   Updated: 2024/08/09 15:40:00 by chuhlig          ###   ########.fr       */
+/*   Updated: 2024/08/29 15:01:48 by chuhlig          ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
-- 
cgit v1.2.3


From 5373e9e53accb20438d92a78224221734786d051 Mon Sep 17 00:00:00 2001
From: Christopher Uhlig
Date: Thu, 29 Aug 2024 15:57:14 +0200
Subject: added other token append to remove the error that its not at the
 start

---
 src/new_token.c | 29 +++++++++++++++++++++++++++--
 1 file changed, 27 insertions(+), 2 deletions(-)

diff --git a/src/new_token.c b/src/new_token.c
index 92ff421..6431c7d 100644
--- a/src/new_token.c
+++ b/src/new_token.c
@@ -3,10 +3,10 @@
 /*                                                        :::      ::::::::   */
 /*   new_token.c                                        :+:      :+:    :+:   */
 /*                                                    +:+ +:+         +:+     */
-/*   By: dkaiser <dkaiser@student.42heilbronn.de    +#+  +:+       +#+        */
+/*   By: chuhlig <chuhlig@student.42.fr>            +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2024/06/27 14:29:44 by dkaiser           #+#    #+#             */
-/*   Updated: 2024/06/28 14:59:34 by dkaiser          ###   ########.fr       */
+/*   Updated: 2024/08/29 15:30:52 by chuhlig          ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -50,3 +50,28 @@ t_token	*new_redir_token(int type, t_token *previous, t_token *next)
 	token->content.redir_type = type;
 	return (token);
 }
+
+// void	ft_append_token(int type, t_token **list)// but we need somewhere token/node head initialize with nul
+// {
+// 	t_token	*node;
+// 	t_token	*last_node;
+
+// 	if (!list)
+// 		return ;
+// 	node = malloc(sizeof(t_token));
+// 	if (!node)
+// 		return ;
+// 	node->next = NULL;
+// 	node->type = type;
+// 	if (!*list)
+// 	{
+// 		*list = node;
+// 		node->previous = NULL;
+// 	}
+// 	else
+// 	{
+// 		last_node = ft_lstlast(*list);
+// 		last_node->next = node;
+// 		node->previous = last_node;
+// 	}
+// }
\ No newline at end of file
-- 
cgit v1.2.3


From 801598045e52071af1effa3a28ddffb17671b08e Mon Sep 17 00:00:00 2001
From: Christopher Uhlig
Date: Wed, 4 Sep 2024 17:53:41 +0200
Subject: update for builtins and now 2 envlist

---
 src/builtins_part_one.c | 79 ++++++++++++++++++++++++++++++++++++-------------
 1 file changed, 58 insertions(+), 21 deletions(-)

diff --git a/src/builtins_part_one.c b/src/builtins_part_one.c
index 6ca0caa..10d8979 100644
--- a/src/builtins_part_one.c
+++ b/src/builtins_part_one.c
@@ -6,13 +6,13 @@
 /*   By: chuhlig <chuhlig@student.42.fr>            +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2024/08/09 17:01:16 by chuhlig           #+#    #+#             */
-/*   Updated: 2024/08/29 14:24:13 by chuhlig          ###   ########.fr       */
+/*   Updated: 2024/09/04 17:52:49 by chuhlig          ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
 #include "env.h"
 
-int	echo(char **av)
+int	echo(char **av)//more or less done
 {
 	int	i;
 	int	f;
@@ -39,29 +39,44 @@ int	echo(char **av)
 	return (0);
 }
 
-int	pwd(void)
+
+int	pwd(t_env **env, char *av) //done
 {
-	char	cwd[1028];
+	t_env	*current;
+	t_env	*prev;
+	char	*tmp;
 
-	getcwd(cwd, sizeof(cwd));
-	printf("%s\n", cwd);
+	current = env;
+	prev = NULL;
+	while (current)
+	{
+		if(ft_strcmp(current->name, av == 0))
+			break ;
+		prev = current;
+		current = current->next;
+	}
+	ft_printf("%s\n", current->value);
 	return (0);
 }
 
-int	env(char **env)
+int	env(t_env **env)// here i need str env oder ich print es alles zusammen xD
 {
-	int	i;
+	t_env	*current;
+	t_env	*prev;
+	char	*tmp;
 
-	i = 0;
-	while (env[i] != NULL)
+	current = env;
+	prev = NULL;
+	while (current)
 	{
-		printf("%s\n", env[i]);
-		i++;
+		ft_printf("%s\n", current->name);
+		prev = current;
+		current = current->next;
 	}
 	return (0);
 }
 
-int	cd(char **av)
+int	cd(t_env **env,char **av) // here also need to do the same again for envstrarr. dont like it
 {
 
 	if(av[1] == NULL)
@@ -116,8 +131,7 @@ int	exit(char *av)
 
 //export
 
-// add a part to append it to list and maybe also check bc export pwd or home stuf 
-int	export(char **av, t_env **env)
+int	export(char **av, t_env **env) // here also need to do the same again for envstrarr. dont like it
 {
 	char	*tmp;
 	if(tmp = ft_strchr(av[1], '='))
@@ -151,7 +165,7 @@ int	export(char **av, t_env **env)
 
 //unset
 //for unset as well check and for name part
-int	unset(char **av, t_env **env)
+int	unset(char **av, t_env **env) // here also need to do the same again for envstrarr. dont like it
 {
 	t_env	*current;
 	t_env	*prev;
@@ -174,19 +188,17 @@ int	unset(char **av, t_env **env)
 			prev->next = current->next;
 		else
 			*env = current->next
-		free(t_env);
+		free(t_env);//need function for this
 	}
 	return (0);
 }
 
-void	getenvlst(t_env **env, char **en)
+void	getenvlst(t_env **env, char **en)// seperated name and value
 {
 	char	*tmp;
 	int		i;
-	int		t;
 	t_env 	*current;
 
-	t = 0;
 	i = 0;
 	while (en[i] != NULL)
 	{
@@ -201,4 +213,29 @@ void	getenvlst(t_env **env, char **en)
 		i++;
 	}
 	return (0);
-}
\ No newline at end of file
+}
+
+void	getenvlststr(t_env **env, char **en)//without serparation
+{
+	int			i;
+	size_t		t;
+	t_env 	*current;
+
+	t = 0;
+	i = 0;
+	while (en[i] != NULL)
+	{
+		current = *env;
+        current = malloc(sizeof(t_env));
+		while(en[t] != '=')
+			t++;
+        current->name = ft_substr(en[i], 0, t);
+        current->value = ft_strdup(en[i]);
+        current->next = *env;
+        *env = current;
+		i++;
+	}
+	return (0);
+}
+
+//should name the list different
\ No newline at end of file
-- 
cgit v1.2.3


From fd179cf97e176b00cd01763d82e89d9af6ed355c Mon Sep 17 00:00:00 2001
From: Christopher Uhlig
Date: Fri, 13 Sep 2024 21:21:09 +0200
Subject: update builtins for env structure

---
 src/builtins_part_one.c | 141 ++++++++++++++++++++++++++++--------------------
 1 file changed, 82 insertions(+), 59 deletions(-)

diff --git a/src/builtins_part_one.c b/src/builtins_part_one.c
index 10d8979..e99bb90 100644
--- a/src/builtins_part_one.c
+++ b/src/builtins_part_one.c
@@ -6,13 +6,13 @@
 /*   By: chuhlig <chuhlig@student.42.fr>            +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2024/08/09 17:01:16 by chuhlig           #+#    #+#             */
-/*   Updated: 2024/09/04 17:52:49 by chuhlig          ###   ########.fr       */
+/*   Updated: 2024/09/13 21:20:17 by chuhlig          ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
 #include "env.h"
 
-int	echo(char **av)//more or less done
+int	echo(char **av)
 {
 	int	i;
 	int	f;
@@ -40,7 +40,7 @@ int	echo(char **av)//more or less done
 }
 
 
-int	pwd(t_env **env, char *av) //done
+int	pwd(t_env **env, char *av)
 {
 	t_env	*current;
 	t_env	*prev;
@@ -59,75 +59,98 @@ int	pwd(t_env **env, char *av) //done
 	return (0);
 }
 
-int	env(t_env **env)// here i need str env oder ich print es alles zusammen xD
+int	env(t_env **env)
 {
 	t_env	*current;
 	t_env	*prev;
-	char	*tmp;
 
 	current = env;
 	prev = NULL;
 	while (current)
 	{
-		ft_printf("%s\n", current->name);
+		ft_printf("%s", current->name);
+		ft_printf("=%s\n", current->value);
 		prev = current;
 		current = current->next;
 	}
 	return (0);
 }
 
-int	cd(t_env **env,char **av) // here also need to do the same again for envstrarr. dont like it
+void	update_oldpwd(t_env **env)
 {
+	t_env	*current;
+	t_env	*prev;
+	char	cwd[1028];
+	char	*tmp;
 
-	if(av[1] == NULL)
-	{
-	while (env[i] != NULL) // home command
+	while (current) // home command
 	{
-		if (ft_strncmp(env[i], "HOME=", 5) == 0)
+		if (ft_strncmp(current->name, "OLDPWD", 6) == 0)
 			break ;
-		i++;
+		prev = current;
+		current = current->next;
 	}
-	// before chdir we need to update old pwd
-	// getcwd(cwd, sizeof(cwd));
-	// str = ft_strjoin("PWD= or old pwd=", cwd);
-	// env[i] = str;
-	if(chdir(env[i] + 5) == -1)
-			return;
+	getcwd(cwd, sizeof(cwd));
+	tmp = ft_strdup(cwd);
+	free(current->value);
+	current->value = tmp; 
+}
+
+void	update_pwd(t_env **env)
+{
+	t_env	*current;
+	t_env	*prev;
+	char	cwd[1028];
+	char	*tmp;
+
+	while (current)
+	{
+		if (ft_strncmp(current->name, "PWD", 3) == 0)
+			break ;
+		prev = current;
+		current = current->next;
 	}
-	else
-		//update old pwd
-		//
-		while (env[i] != NULL) // home command
+	getcwd(cwd, sizeof(cwd));
+	tmp = ft_strdup(cwd);
+	free(current->value);
+	current->value = tmp;
+}
+
+int	cd(t_env **env,char **av)
+{
+	t_env	*current;
+	t_env	*prev;
+	t_env	*pwd;
+
+	current = env;
+	if(av[1] == NULL)
+	{
+		while (current) // home command
 		{
-		if (ft_strncmp(env[i], "old PWD=", 5) == 0)
-			break ;
-		i++;
+			if (ft_strncmp(current->name, "HOME", 4) == 0)
+				break ;
+			prev = current;
+			current = current->next;
 		}
-		str = ft_strjoin("old pwd=", cwd);
-		env[i] = str;
-		//
-		chdir(av[1] ==  -1);
+		if(chdir(current->value) == -1)
 			return ;
-	// udpate pwd
-	while (env[i] != NULL) // home command
+	}
+	else
 	{
-		if (ft_strncmp(env[i], "PWD=", 5) == 0)
-			break ;
-		i++;
+		update_oldpwd(&env);
+		if(chdir(av[1]) ==  -1)
+			return ;
+		update_pwd(&env);
 	}
-	str = ft_strjoin("PWD=", cwd);
-	env[i] = str;
 }
 
 // exit
 
-
 int	exit(char *av)
 {
 	freenode free toke free sequence stop repl free env
 	clear history
 }
-//joar
 
 //export
 
@@ -215,27 +238,27 @@ void	getenvlst(t_env **env, char **en)// seperated name and value
 	return (0);
 }
 
-void	getenvlststr(t_env **env, char **en)//without serparation
-{
-	int			i;
-	size_t		t;
-	t_env 	*current;
+// void	getenvlststr(t_env **env, char **en)//without serparation
+// {
+// 	int			i;
+// 	size_t		t;
+// 	t_env 	*current;
 
-	t = 0;
-	i = 0;
-	while (en[i] != NULL)
-	{
-		current = *env;
-        current = malloc(sizeof(t_env));
-		while(en[t] != '=')
-			t++;
-        current->name = ft_substr(en[i], 0, t);
-        current->value = ft_strdup(en[i]);
-        current->next = *env;
-        *env = current;
-		i++;
-	}
-	return (0);
-}
+// 	t = 0;
+// 	i = 0;
+// 	while (en[i] != NULL)
+// 	{
+// 		current = *env;
+//         current = malloc(sizeof(t_env));
+// 		while(en[t] != '=')
+// 			t++;
+//         current->name = ft_substr(en[i], 0, t);
+//         current->value = ft_strdup(en[i]);
+//         current->next = *env;
+//         *env = current;
+// 		i++;
+// 	}
+// 	return (0);
+// }
 
 //should name the list different
\ No newline at end of file
-- 
cgit v1.2.3


From a4927cc09474bcd1cf7280392485146abce0a12c Mon Sep 17 00:00:00 2001
From: Christopher Uhlig
Date: Fri, 13 Sep 2024 21:46:52 +0200
Subject: update for unset export and cd

---
 src/builtins_part_one.c | 61 ++++++++++++++++++++++++++-----------------------
 1 file changed, 33 insertions(+), 28 deletions(-)

diff --git a/src/builtins_part_one.c b/src/builtins_part_one.c
index e99bb90..42561e9 100644
--- a/src/builtins_part_one.c
+++ b/src/builtins_part_one.c
@@ -6,7 +6,7 @@
 /*   By: chuhlig <chuhlig@student.42.fr>            +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2024/08/09 17:01:16 by chuhlig           #+#    #+#             */
-/*   Updated: 2024/09/13 21:20:17 by chuhlig          ###   ########.fr       */
+/*   Updated: 2024/09/13 21:46:08 by chuhlig          ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -125,6 +125,7 @@ int	cd(t_env **env,char **av)
 	current = env;
 	if(av[1] == NULL)
 	{
+		update_oldpwd(&env);
 		while (current) // home command
 		{
 			if (ft_strncmp(current->name, "HOME", 4) == 0)
@@ -157,33 +158,39 @@ int	exit(char *av)
 int	export(char **av, t_env **env) // here also need to do the same again for envstrarr. dont like it
 {
 	char	*tmp;
-	if(tmp = ft_strchr(av[1], '='))
+	t_env	*current;
+	int		i;
+
+	i = i;
+	while(av[i])
 	{
-		tmp = '\0';
-		t_env *current;
-		current = *env;
-		while(current)
+		if(tmp = ft_strchr(av[i], '='))
 		{
-			if (strcmp(current->name, av[1]) == 0)
+			tmp = '\0';
+			current = *env;
+			while(current)
 			{
-                free(current->value);
-                current->value = ft_strdup(tmp + 1);
-                break;
-            }
-            current = current->next;
+				if (strcmp(current->name, av[i]) == 0)
+				{
+    	            free(current->value);
+    	            current->value = ft_strdup(tmp + 1);
+    	            break;
+    	        }
+    	        current = current->next;
+			}
+			if (!current)
+			{
+    	        current = malloc(sizeof(t_env));
+    	        current->name = ft_strdup(av[i]);
+    	        current->value = ft_strdup(tmp + 1);
+    	        current->next = *env;
+    	        *env = current;
+    	    }
+			return (0);
 		}
-		if (!current)
-		{
-            current = malloc(sizeof(t_env));
-            current->name = ft_strdup(av[1]);
-            current->value = ft_strdup(tmp + 1);
-            current->next = *env;
-            *env = current;
-        }
-		return (0);
+		i++;
 	}
-	else
-		syntax return 1;
+	return 1;
 }
 
 //unset
@@ -192,12 +199,9 @@ int	unset(char **av, t_env **env) // here also need to do the same again for env
 {
 	t_env	*current;
 	t_env	*prev;
-	char	*tmp;
 
 	current = env;
 	prev = NULL;
-	tmp = ft_strchr(av[1], '=');
-	tmp = '\0';
 	while (current)
 	{
 		if(ft_strcmp(current->name, av[1] == 0))
@@ -210,8 +214,9 @@ int	unset(char **av, t_env **env) // here also need to do the same again for env
 		if(prev)
 			prev->next = current->next;
 		else
-			*env = current->next
-		free(t_env);//need function for this
+			*env = current->next;
+		free(current->value);
+		free(current);
 	}
 	return (0);
 }
-- 
cgit v1.2.3


From 9b1ddf7b3491f26d8b3ba9daeca7174aede9c781 Mon Sep 17 00:00:00 2001
From: Christopher Uhlig
Date: Tue, 17 Sep 2024 16:34:57 +0200
Subject: added remove for env list

---
 src/builtins_part_one.c | 24 +++++++++++++++++++++---
 1 file changed, 21 insertions(+), 3 deletions(-)

diff --git a/src/builtins_part_one.c b/src/builtins_part_one.c
index 42561e9..5a35236 100644
--- a/src/builtins_part_one.c
+++ b/src/builtins_part_one.c
@@ -6,7 +6,7 @@
 /*   By: chuhlig <chuhlig@student.42.fr>            +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2024/08/09 17:01:16 by chuhlig           #+#    #+#             */
-/*   Updated: 2024/09/13 21:46:08 by chuhlig          ###   ########.fr       */
+/*   Updated: 2024/09/17 16:23:15 by chuhlig          ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -155,7 +155,7 @@ int	exit(char *av)
 
 //export
 
-int	export(char **av, t_env **env) // here also need to do the same again for envstrarr. dont like it
+int	export(char **av, t_env **env)
 {
 	char	*tmp;
 	t_env	*current;
@@ -195,7 +195,7 @@ int	export(char **av, t_env **env) // here also need to do the same again for en
 
 //unset
 //for unset as well check and for name part
-int	unset(char **av, t_env **env) // here also need to do the same again for envstrarr. dont like it
+int	unset(char **av, t_env **env)
 {
 	t_env	*current;
 	t_env	*prev;
@@ -243,6 +243,24 @@ void	getenvlst(t_env **env, char **en)// seperated name and value
 	return (0);
 }
 
+
+void	free_envlst(t_env **env)
+{
+	t_env	*cur;
+	t_env 	*new;
+
+	cur = *env;
+	while (cur)
+	{
+		new = cur->next;
+		free(cur->name);
+		free(cur->value);
+		free(cur);
+		cur = new;
+	}
+	
+}
+
 // void	getenvlststr(t_env **env, char **en)//without serparation
 // {
 // 	int			i;
-- 
cgit v1.2.3


From 2b6dfc7368384655da2a843896539f443695b972 Mon Sep 17 00:00:00 2001
From: Christopher Uhlig
Date: Thu, 17 Oct 2024 14:30:23 +0200
Subject: removed env stuf to move it into env branch

---
 src/builtins_part_one.c | 41 +----------------------------------------
 1 file changed, 1 insertion(+), 40 deletions(-)

diff --git a/src/builtins_part_one.c b/src/builtins_part_one.c
index 5a35236..d817336 100644
--- a/src/builtins_part_one.c
+++ b/src/builtins_part_one.c
@@ -6,7 +6,7 @@
 /*   By: chuhlig <chuhlig@student.42.fr>            +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2024/08/09 17:01:16 by chuhlig           #+#    #+#             */
-/*   Updated: 2024/09/17 16:23:15 by chuhlig          ###   ########.fr       */
+/*   Updated: 2024/10/17 14:29:40 by chuhlig          ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -221,45 +221,6 @@ int	unset(char **av, t_env **env)
 	return (0);
 }
 
-void	getenvlst(t_env **env, char **en)// seperated name and value
-{
-	char	*tmp;
-	int		i;
-	t_env 	*current;
-
-	i = 0;
-	while (en[i] != NULL)
-	{
-		tmp = ft_strchr(en[i], '=');
-		tmp = '\0';
-		current = *env;
-        current = malloc(sizeof(t_env));
-        current->name = ft_strdup(en[i]);
-        current->value = ft_strdup(tmp + 1);
-        current->next = *env;
-        *env = current;
-		i++;
-	}
-	return (0);
-}
-
-
-void	free_envlst(t_env **env)
-{
-	t_env	*cur;
-	t_env 	*new;
-
-	cur = *env;
-	while (cur)
-	{
-		new = cur->next;
-		free(cur->name);
-		free(cur->value);
-		free(cur);
-		cur = new;
-	}
-	
-}
 
 // void	getenvlststr(t_env **env, char **en)//without serparation
 // {
-- 
cgit v1.2.3


From 00ad7429f223c85e99da6ffa8f7dade0c73c97b5 Mon Sep 17 00:00:00 2001
From: Christopher Uhlig
Date: Fri, 25 Oct 2024 20:53:44 +0200
Subject: update for builtins and extra functions

---
 src/builtins_part_one.c | 180 +++++++++++-------------------------------------
 src/builtins_part_two.c |  82 ++++++++++++++++++++++
 2 files changed, 124 insertions(+), 138 deletions(-)
 create mode 100644 src/builtins_part_two.c

diff --git a/src/builtins_part_one.c b/src/builtins_part_one.c
index d817336..6b92d9c 100644
--- a/src/builtins_part_one.c
+++ b/src/builtins_part_one.c
@@ -6,7 +6,7 @@
 /*   By: chuhlig <chuhlig@student.42.fr>            +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2024/08/09 17:01:16 by chuhlig           #+#    #+#             */
-/*   Updated: 2024/10/17 14:29:40 by chuhlig          ###   ########.fr       */
+/*   Updated: 2024/10/25 20:52:36 by chuhlig          ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -39,7 +39,6 @@ int	echo(char **av)
 	return (0);
 }
 
-
 int	pwd(t_env **env, char *av)
 {
 	t_env	*current;
@@ -50,7 +49,7 @@ int	pwd(t_env **env, char *av)
 	prev = NULL;
 	while (current)
 	{
-		if(ft_strcmp(current->name, av == 0))
+		if (ft_strcmp(current->name, av == 0))
 			break ;
 		prev = current;
 		current = current->next;
@@ -76,85 +75,12 @@ int	env(t_env **env)
 	return (0);
 }
 
-void	update_oldpwd(t_env **env)
-{
-	t_env	*current;
-	t_env	*prev;
-	char	cwd[1028];
-	char	*tmp;
-
-	while (current) // home command
-	{
-		if (ft_strncmp(current->name, "OLDPWD", 6) == 0)
-			break ;
-		prev = current;
-		current = current->next;
-	}
-	getcwd(cwd, sizeof(cwd));
-	tmp = ft_strdup(cwd);
-	free(current->value);
-	current->value = tmp; 
-}
-
-void	update_pwd(t_env **env)
-{
-	t_env	*current;
-	t_env	*prev;
-	char	cwd[1028];
-	char	*tmp;
-
-	while (current)
-	{
-		if (ft_strncmp(current->name, "PWD", 3) == 0)
-			break ;
-		prev = current;
-		current = current->next;
-	}
-	getcwd(cwd, sizeof(cwd));
-	tmp = ft_strdup(cwd);
-	free(current->value);
-	current->value = tmp;
-}
-
-int	cd(t_env **env,char **av)
-{
-	t_env	*current;
-	t_env	*prev;
-	t_env	*pwd;
-
-	current = env;
-	if(av[1] == NULL)
-	{
-		update_oldpwd(&env);
-		while (current) // home command
-		{
-			if (ft_strncmp(current->name, "HOME", 4) == 0)
-				break ;
-			prev = current;
-			current = current->next;
-		}
-		if(chdir(current->value) == -1)
-			return ;
-	}
-	else
-	{
-		update_oldpwd(&env);
-		if(chdir(av[1]) ==  -1)
-			return ;
-		update_pwd(&env);
-	}
-}
-
-// exit
-
 int	exit(char *av)
 {
-	freenode free toke free sequence stop repl free env
-	clear history
+	freenode free toke free sequence stop repl free env;
+	clear history;
 }
 
-//export
-
 int	export(char **av, t_env **env)
 {
 	char	*tmp;
@@ -162,87 +88,65 @@ int	export(char **av, t_env **env)
 	int		i;
 
 	i = i;
-	while(av[i])
+	while (av[i])
 	{
-		if(tmp = ft_strchr(av[i], '='))
+		if (t_strchr(av[i], '='))
 		{
+			tmp = ft_strchr(av[i], '=');
 			tmp = '\0';
 			current = *env;
-			while(current)
+			while (current)
 			{
-				if (strcmp(current->name, av[i]) == 0)
+				if (ft_strcmp(current->name, tmp[i]) == 0)
 				{
-    	            free(current->value);
-    	            current->value = ft_strdup(tmp + 1);
-    	            break;
-    	        }
-    	        current = current->next;
+					free(current->value);
+					current->value = ft_strdup(tmp + 1);
+					break ;
+				}
+				current = current->next;
 			}
 			if (!current)
 			{
-    	        current = malloc(sizeof(t_env));
-    	        current->name = ft_strdup(av[i]);
-    	        current->value = ft_strdup(tmp + 1);
-    	        current->next = *env;
-    	        *env = current;
-    	    }
-			return (0);
+				current = malloc(sizeof(t_env));
+				current->name = ft_strdup(av[i]);
+				current->value = ft_strdup(tmp + 1);
+				current->next = *env;
+				*env = current;
+			}
 		}
 		i++;
 	}
-	return 1;
+	return (1);
 }
 
-//unset
-//for unset as well check and for name part
 int	unset(char **av, t_env **env)
 {
 	t_env	*current;
 	t_env	*prev;
+	int		i;
 
+	i = 0;
 	current = env;
 	prev = NULL;
-	while (current)
-	{
-		if(ft_strcmp(current->name, av[1] == 0))
-			break ;
-		prev = current;
-		current = current->next;
-	}
-	if(current)
+	while (av[i])
 	{
-		if(prev)
-			prev->next = current->next;
-		else
-			*env = current->next;
-		free(current->value);
-		free(current);
+		while (current)
+		{
+			if (ft_strcmp(current->name, av[i] == 0))
+				break ;
+			prev = current;
+			current = current->next;
+		}
+		if (current)
+		{
+			if (prev)
+				prev->next = current->next;
+			else
+				*env = current->next;
+			free(current->value);
+			free(current);
+		}
+		i++;
 	}
 	return (0);
-}
-
-
-// void	getenvlststr(t_env **env, char **en)//without serparation
-// {
-// 	int			i;
-// 	size_t		t;
-// 	t_env 	*current;
-
-// 	t = 0;
-// 	i = 0;
-// 	while (en[i] != NULL)
-// 	{
-// 		current = *env;
-//         current = malloc(sizeof(t_env));
-// 		while(en[t] != '=')
-// 			t++;
-//         current->name = ft_substr(en[i], 0, t);
-//         current->value = ft_strdup(en[i]);
-//         current->next = *env;
-//         *env = current;
-// 		i++;
-// 	}
-// 	return (0);
-// }
-
-//should name the list different
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/src/builtins_part_two.c b/src/builtins_part_two.c
new file mode 100644
index 0000000..94ef258
--- /dev/null
+++ b/src/builtins_part_two.c
@@ -0,0 +1,82 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   builtins_part_two.c                                :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: chuhlig <chuhlig@student.42.fr>            +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/10/25 20:52:16 by chuhlig           #+#    #+#             */
+/*   Updated: 2024/10/25 20:52:46 by chuhlig          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "env.h"
+
+void	update_oldpwd(t_env **env)
+{
+	t_env	*current;
+	t_env	*prev;
+	char	cwd[1028];
+	char	*tmp;
+
+	while (current)
+	{
+		if (ft_strncmp(current->name, "OLDPWD", 6) == 0)
+			break ;
+		prev = current;
+		current = current->next;
+	}
+	getcwd(cwd, sizeof(cwd));
+	tmp = ft_strdup(cwd);
+	free(current->value);
+	current->value = tmp;
+}
+
+void	update_pwd(t_env **env)
+{
+	t_env	*current;
+	t_env	*prev;
+	char	cwd[1028];
+	char	*tmp;
+
+	while (current)
+	{
+		if (ft_strncmp(current->name, "PWD", 3) == 0)
+			break ;
+		prev = current;
+		current = current->next;
+	}
+	getcwd(cwd, sizeof(cwd));
+	tmp = ft_strdup(cwd);
+	free(current->value);
+	current->value = tmp;
+}
+
+int	cd(t_env **env, char **av)
+{
+	t_env	*current;
+	t_env	*prev;
+	t_env	*pwd;
+
+	current = env;
+	if (av[1] == NULL)
+	{
+		update_oldpwd(&env);
+		while (current)
+		{
+			if (ft_strncmp(current->name, "HOME", 4) == 0)
+				break ;
+			prev = current;
+			current = current->next;
+		}
+		if (chdir(current->value) == -1)
+			return ;
+	}
+	else
+	{
+		update_oldpwd(&env);
+		if (chdir(av[1]) == -1)
+			return ;
+		update_pwd(&env);
+	}
+}
\ No newline at end of file
-- 
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