diff --git a/a.out b/a.out
new file mode 100755
index 0000000..9e84bec
Binary files /dev/null and b/a.out differ
diff --git a/d b/d
index e69de29..d0b1d06 100755
--- a/d
+++ b/d
@@ -0,0 +1,24 @@
+a.out
+argprinter
+d
+execution.c
+file.c
+file.o
+ft_split_quoted.c
+ft_split_quoted.o
+heredoc.c
+heredoc.o
+infile.c
+infile.o
+libftx
+main.c
+main.o
+Makefile
+minishell
+minishell.h
+outfile.c
+outfile.o
+syntatics.c
+syntatics.o
+t
+utils
diff --git a/execution.c b/execution.c
new file mode 100644
index 0000000..5ed3840
--- /dev/null
+++ b/execution.c
@@ -0,0 +1,39 @@
+#include "libftx/libftx.h"
+#include "minishell.h"
+#include <unistd.h>
+
+int	main(int ac, char **av, char **env)
+{
+
+}
+
+char	*ft_get_executable_path(t_data *data, char *executable)
+{
+	if (ft_strcmp(executable, "env"))
+		return (ft_strjoin("/usr/bin/bo", const char *s2))
+}
+
+int	ft_excutor(t_cmd *cmd, )
+{
+	char	cmd[13] = "/usr/bin/ls";
+	char	*args[3] = {NULL, "cat", NULL};
+	int		pid;
+	int		fd_in;
+	int		fd_out;
+
+	if (ac != 3)
+		return (1);
+	fd_out = open(av[2], O_WRONLY | O_CREAT | O_TRUNC);
+	fd_in = open(av[1], O_RDONLY);
+	pid = fork();
+	if (pid == -1)
+		return (1);
+	if (pid == 0)
+	{
+		dup2(fd_out, 1);
+		dup2(fd_in, 0);
+		execve(cmd, args, env);
+	}
+	else
+		waitpid(pid);
+}
diff --git a/file.c b/file.c
index da9b9c8..d03757d 100644
--- a/file.c
+++ b/file.c
@@ -1,6 +1,6 @@
 #include "minishell.h"
 
-int	ft_file_is_readable(char *path)
+int	ft_file_is_readable(const char *path)
 {
 	int	readable;
 	int	fd;
@@ -21,7 +21,7 @@ int	ft_file_is_readable(char *path)
 	return (1);
 }
 
-int	ft_file_is_writeable(char *path)
+int	ft_file_is_writeable(const char *path)
 {
 	int	writeable;
 	int	fd;
@@ -42,7 +42,7 @@ int	ft_file_is_writeable(char *path)
 	return (1);
 }
 
-char	*ft_get_file_path(char *infile)
+char	*ft_get_file_path(const char *infile)
 {
 	size_t	i;
 	size_t	n;
diff --git a/file.o b/file.o
index 5561861..f7d44cf 100644
Binary files a/file.o and b/file.o differ
diff --git a/ft_split_quoted.o b/ft_split_quoted.o
index ccc57e3..210c12f 100644
Binary files a/ft_split_quoted.o and b/ft_split_quoted.o differ
diff --git a/heredoc.o b/heredoc.o
index 9d6ea8f..1b9deb4 100644
Binary files a/heredoc.o and b/heredoc.o differ
diff --git a/infile.o b/infile.o
index c829348..69a9740 100644
Binary files a/infile.o and b/infile.o differ
diff --git a/libftx/extra/Makefile b/libftx/extra/Makefile
index 269a370..bc967dd 100644
--- a/libftx/extra/Makefile
+++ b/libftx/extra/Makefile
@@ -12,7 +12,7 @@
 
 CC = clang
 
-SRCS = ft_contain_only.c ft_freer.c ft_is_in.c ft_random_generator.c ft_strchri.c ft_strcmp.c ft_strfjoin.c ft_strgen.c ft_strmerger.c ft_strndup.c ft_tabrealloc.c ft_ultoa_base.c
+SRCS = ft_contain_only.c ft_freer.c ft_is_in.c ft_random_generator.c ft_strchri.c ft_strcmp.c ft_strfjoin.c ft_strgen.c ft_strmerger.c ft_strndup.c ft_tabrealloc.c ft_ultoa_base.c ft_swap.c
 
 OBJS = $(SRCS:.c=.o)
 
diff --git a/libftx/extra/extra.a b/libftx/extra/extra.a
index f037fe7..309850b 100644
Binary files a/libftx/extra/extra.a and b/libftx/extra/extra.a differ
diff --git a/libftx/extra/extra.h b/libftx/extra/extra.h
index c5180fa..f745d3f 100644
--- a/libftx/extra/extra.h
+++ b/libftx/extra/extra.h
@@ -28,9 +28,13 @@ char		*ft_strfjoin(char *s1, char *s2);
 char		*ft_strmerger(size_t arg_len, ...);
 int			ft_is_in(char *str, char c);
 char		**ft_tabrealloc(char **tab, size_t current_size, size_t new_size);
-char		*ft_strndup(char *src, size_t n);
+char		*ft_strndup(const char *src, size_t n);
 ssize_t		ft_strchri(char *str, char c);
 int			ft_contain_only_str(char *str, char *to_find);
 int			ft_contain_only(char *str, char c);
 int			ft_strcmp(char *s1, char *s2);
+void		ft_swap(void *a, void *b);
+void		ft_swap_int(int *a, int *b);
+void		ft_swap_char(char *a, char *b);
+
 #endif
diff --git a/libftx/extra/ft_strndup.c b/libftx/extra/ft_strndup.c
index c0fc2aa..c289878 100644
--- a/libftx/extra/ft_strndup.c
+++ b/libftx/extra/ft_strndup.c
@@ -12,7 +12,7 @@
 
 #include "extra.h"
 
-char	*ft_strndup(char *src, size_t n)
+char	*ft_strndup(const char *src, size_t n)
 {
 	char	*out;
 	size_t	i;
diff --git a/libftx/extra/ft_strndup.o b/libftx/extra/ft_strndup.o
index dae7c88..585b50b 100644
Binary files a/libftx/extra/ft_strndup.o and b/libftx/extra/ft_strndup.o differ
diff --git a/libftx/extra/ft_swap.c b/libftx/extra/ft_swap.c
new file mode 100644
index 0000000..53fba9f
--- /dev/null
+++ b/libftx/extra/ft_swap.c
@@ -0,0 +1,28 @@
+#include "utils.h"
+
+void	ft_swap(void *a, void *b)
+{
+	void	*c;
+
+	c = a;
+	a = b;
+	b = c;
+}
+
+void	ft_swap_char(char *a, char *b)
+{
+	char	c;
+
+	c = *a;
+	*a = *b;
+	*b = c;
+}
+
+void	ft_swap_int(int *a, int *b)
+{
+	int	c;
+
+	c = *a;
+	*a = *b;
+	*b = c;
+}
diff --git a/libftx/extra/ft_swap.o b/libftx/extra/ft_swap.o
new file mode 100644
index 0000000..f00ec7dd
Binary files /dev/null and b/libftx/extra/ft_swap.o differ
diff --git a/libftx/extra/ft_tabrealloc-5f29f43f.o.tmp b/libftx/extra/ft_tabrealloc-5f29f43f.o.tmp
deleted file mode 100644
index e69de29..0000000
diff --git a/libftx/libft/Makefile b/libftx/libft/Makefile
index 9a2c3b1..0102a19 100644
--- a/libftx/libft/Makefile
+++ b/libftx/libft/Makefile
@@ -45,9 +45,8 @@ SRCS   = ft_isalpha.c \
 		 ft_putchar_fd.c \
 		 ft_putstr_fd.c \
 		 ft_putendl_fd.c \
-		 ft_putnbr_fd.c
-
-BSRCS   = ft_lstnew.c \
+		 ft_putnbr_fd.c \
+		 ft_lstnew.c \
 		 ft_lstadd_front.c \
 		 ft_lstsize.c \
 		 ft_lstlast.c \
@@ -59,8 +58,6 @@ BSRCS   = ft_lstnew.c \
 
 OBJS = $(SRCS:.c=.o)
 
-BOBJS = $(BSRCS:.c=.o)
-
 NAME = libft.a
 
 CFLAGS = -Wall -Werror -Wextra -g
@@ -73,15 +70,12 @@ all: $(NAME)
 $(NAME): $(OBJS)
 	ar -rc $(NAME) $(OBJS)
 
-bonus: $(OBJS) $(BOBJS) 
-	ar -rc $(NAME) $(OBJS) $(BOBJS) 
-	
 clean:
-	rm -f $(OBJS) $(BOBJS)
+	rm -f $(OBJS)
 
 fclean: clean
 	rm -f $(NAME)
 
 re: fclean all
 
-.PHONY: all bonus clean fclean re
+.PHONY: all clean fclean re
diff --git a/libftx/libft/ft_lstadd_back.o b/libftx/libft/ft_lstadd_back.o
new file mode 100644
index 0000000..3dd90bc
Binary files /dev/null and b/libftx/libft/ft_lstadd_back.o differ
diff --git a/libftx/libft/ft_lstadd_front.o b/libftx/libft/ft_lstadd_front.o
new file mode 100644
index 0000000..46cb135
Binary files /dev/null and b/libftx/libft/ft_lstadd_front.o differ
diff --git a/libftx/libft/ft_lstclear.o b/libftx/libft/ft_lstclear.o
new file mode 100644
index 0000000..563dd89
Binary files /dev/null and b/libftx/libft/ft_lstclear.o differ
diff --git a/libftx/libft/ft_lstdelone.o b/libftx/libft/ft_lstdelone.o
new file mode 100644
index 0000000..2182609
Binary files /dev/null and b/libftx/libft/ft_lstdelone.o differ
diff --git a/libftx/libft/ft_lstiter.o b/libftx/libft/ft_lstiter.o
new file mode 100644
index 0000000..d5d3d11
Binary files /dev/null and b/libftx/libft/ft_lstiter.o differ
diff --git a/libftx/libft/ft_lstlast.o b/libftx/libft/ft_lstlast.o
new file mode 100644
index 0000000..6262d1d
Binary files /dev/null and b/libftx/libft/ft_lstlast.o differ
diff --git a/libftx/libft/ft_lstmap.o b/libftx/libft/ft_lstmap.o
new file mode 100644
index 0000000..adcdfdc
Binary files /dev/null and b/libftx/libft/ft_lstmap.o differ
diff --git a/libftx/libft/ft_lstnew.o b/libftx/libft/ft_lstnew.o
new file mode 100644
index 0000000..8b02f8b
Binary files /dev/null and b/libftx/libft/ft_lstnew.o differ
diff --git a/libftx/libft/ft_lstsize.o b/libftx/libft/ft_lstsize.o
new file mode 100644
index 0000000..a66c496
Binary files /dev/null and b/libftx/libft/ft_lstsize.o differ
diff --git a/libftx/libft/ft_split.c b/libftx/libft/ft_split.c
index 9924e7d..acd870d 100644
--- a/libftx/libft/ft_split.c
+++ b/libftx/libft/ft_split.c
@@ -68,7 +68,7 @@ static char	**ft_segsplitter(char **tab, size_t len, const char *s, char c)
 			let_index++;
 		tab[tab_index] = ft_substr(s, start, let_index - start);
 		if (tab[tab_index] == NULL)
-			return (ft_cancel(tab, tab_index));
+			return (ft_cancel((void **)tab, tab_index));
 		tab_index++;
 	}
 	return (tab);
diff --git a/libftx/libft/ft_split.o b/libftx/libft/ft_split.o
index 198869a..3b9bb56 100644
Binary files a/libftx/libft/ft_split.o and b/libftx/libft/ft_split.o differ
diff --git a/libftx/libft/libft.a b/libftx/libft/libft.a
index 43a93d3..da9bcae 100644
Binary files a/libftx/libft/libft.a and b/libftx/libft/libft.a differ
diff --git a/libftx/libft/libft.h b/libftx/libft/libft.h
index 3c98b38..11cc2c4 100644
--- a/libftx/libft/libft.h
+++ b/libftx/libft/libft.h
@@ -15,7 +15,7 @@
 # include <stdlib.h>
 # include <unistd.h>
 
-void	*ft_cancel(char **tab, size_t len);
+void	*ft_cancel(void **tab, size_t len);
 int		ft_atoi(const char *nptr);
 void	ft_bzero(void *s, size_t n);
 void	*ft_calloc(size_t nmemb, size_t size);
diff --git a/libftx/libftx.a b/libftx/libftx.a
index 4796721..b5d3abd 100644
Binary files a/libftx/libftx.a and b/libftx/libftx.a differ
diff --git a/libftx/libftx.h b/libftx/libftx.h
index 1ce04b2..5735aa1 100644
--- a/libftx/libftx.h
+++ b/libftx/libftx.h
@@ -32,7 +32,10 @@ char	*ft_strfjoin(char *s1, char *s2);
 char	*ft_strmerger(size_t arg_len, ...);
 int		ft_strcmp(char *s1, char *s2);
 ssize_t	ft_strchri(char *str, char c);
-char	*ft_strndup(char *src, size_t n);
+char	*ft_strndup(const char *src, size_t n);
+void	ft_swap(void *a, void *b);
+void	ft_swap_int(int *a, int *b);
+void	ft_swap_char(char *a, char *b);
 
 void	*ft_cancel(void **tab, size_t len);
 int		ft_atoi(const char *nptr);
diff --git a/main.c b/main.c
index 0d630fb..da0df79 100644
--- a/main.c
+++ b/main.c
@@ -1,6 +1,5 @@
 #include "libftx/libftx.h"
 #include "minishell.h"
-#include <stdlib.h>
 
 void	ft_lstdel(void *ptr)
 {
@@ -12,7 +11,7 @@ void	ft_lstdel(void *ptr)
 	if (content->executable != NULL)
 		free(content->executable);
 	if (content->args != NULL)
-		free(content->args);
+		ft_freer_tab_ultimate(1, content->args);
 	free(content);
 	free(element);
 }
@@ -23,29 +22,38 @@ int	ft_cmds_init(t_list **cmds, size_t len)
 	t_list	*current;
 	size_t	i;
 
-	current = malloc(sizeof(t_list));
-	if (current == NULL)
-		return (1);
+	*cmds = malloc(sizeof(t_list));
+	current = *cmds;
 	i = 0;
 	while (i < len)
 	{
-		content = malloc(sizeof(t_cmd *));
+		content = malloc(sizeof(t_cmd));
 		if (content == NULL)
+		{
 			ft_lstclear(cmds, ft_lstdel);
+			return (1);
+		}
 		content->args = NULL;
 		content->executable = NULL;
 		content->fd_in = -1;
 		content->fd_out = -1;
-		current->next = malloc(sizeof(t_list *));
+		current->content = content;
+		if (!((i + 1) < len))
+		{
+			current->next = NULL;
+			return (0);
+		}
+		current->next = malloc(sizeof(t_list));
 		if (current->next == NULL)
 			ft_lstclear(cmds, ft_lstdel);
 		current = current->next;
+		i++;
 	}
+	return (0);
 }
 
 int	ft_cmds_prep(t_list **cmds, const char *line, int infile, int outfile)
 {
-	size_t	i;
 	size_t	len;
 	t_cmd	*cmd;
 	t_list	*current;
@@ -53,9 +61,11 @@ int	ft_cmds_prep(t_list **cmds, const char *line, int infile, int outfile)
 	len = ft_seglen_quoted(line, '|');
 	if (len == 0)
 		return (0);
-	cmds = malloc(sizeof(t_list *));
 	if (ft_cmds_init(cmds, ft_seglen_quoted(line, '|')))
+	{
+		free(cmds);
 		return (1);
+	}
 	cmd = (t_cmd *)(*cmds)->content;
 	cmd->fd_in = infile;
 	current = *cmds;
@@ -66,33 +76,152 @@ int	ft_cmds_prep(t_list **cmds, const char *line, int infile, int outfile)
 	return (0);
 }
 
-int	ft_cmds_fill(t_list **cmds, const char *line)
+void	ft_strshift(char *str, int shift)
 {
-	//TODO
-	//remplir les executables;
-	//		  les args;
+	size_t	i;
+
+	if (shift > 0)
+		return ;
+	i = 0;
+	while (str[i - shift] != '\0')
+	{
+		str[i] = str[i - shift];
+		i++;
+	}
+	str[i + shift] = '\0';
 }
 
-t_list	**ft_parse_cmd(char *line)
+void	ft_quote_remover(char *str)
+{
+	size_t	i;
+	ssize_t	start;
+	ssize_t	stop;
+
+	start = -1;
+	i = 0;
+	while (str[i] != '\0')
+	{
+		if ((str[i] == '\"' || str[i] == '\''))
+		{
+			if (start == -1)
+				start = i;
+			else if (str[i] == str[start])
+			{
+				stop = i;
+				break ;
+			}
+		}
+		i++;
+	}
+	if (start != -1)
+	{
+		ft_strshift(str, -1);
+		str[stop] = '\0';
+	}
+}
+
+int	ft_cmd_filler(t_list *element, char **args)
+{
+	t_cmd	*content;
+	size_t	i;
+
+	if (args == NULL)
+		return (1);
+	content = (t_cmd *)element->content;
+	i = 0;
+	while (args[i] != NULL)
+	{
+		ft_quote_remover(args[i]);
+		i++;
+	}
+	content->args = args;
+	//TODO check if executable exist
+	//TODO change it by env value
+	//TODO add switch to bultin
+	content->executable = ft_strjoin("/usr/bin/", args[0]);
+	if (content->executable == NULL)
+		return (1);
+	return (0);
+}
+
+int	ft_cmds_fill(t_list **cmds, const char *line)
+{
+	char	**tab;
+	char	**args;
+	t_list	*current;
+	size_t	i;
+
+	(void) cmds;
+	tab = ft_split_quoted(line, '|');
+	if (tab == NULL)
+		return (1);
+	i = 0;
+	current = *cmds;
+	while (tab[i] != NULL)
+	{
+		args = ft_split_quoted(tab[i], ' ');
+		if (ft_cmd_filler(current, args) == 1)
+		{
+			ft_lstclear(cmds, ft_lstdel);
+			ft_freer_tab_ultimate(1, args);
+			return (1);
+		}
+		current = current->next;
+		i++;
+	}
+	return (0);
+}
+
+t_list	**ft_parse_cmds(char *line)
 {
 	int		infile;
 	int		outfile;
 	t_list	**cmds;
 
-	cmds = NULL;
+	cmds = malloc(sizeof(t_list *));
 	outfile = ft_outfile(line);
 	infile = ft_infile(line);
 	if (ft_syntatic_verif(line) == 1)
 		return (NULL);
-	ft_cmds_prep(cmds, line, infile, outfile);
+	if (ft_cmds_prep(cmds, line, infile, outfile) == 1)
+		return (NULL);
+	if (ft_cmds_fill(cmds, line) == 1)
+		return (NULL);
 	ft_printf("%s\n", line);
-	return (NULL);
+	return (cmds);
+}
+
+int	ft_cmds_excutor(t_list **cmds)
+{
+	t_cmd	*content;
+	t_list	*current;
+	size_t	i;
+
+	i = 0;
+	current = *cmds;
+	while (current != NULL)
+	{
+		content = current->content;
+		ft_printf("--- COMMAND %d\n", i);
+		ft_printf("excutable: %s\n", content->executable);
+		ft_printf("args:\n%S", content->args);
+		current = current->next;
+		i++;
+	}
+	return (0);
 }
 
 int	main(int ac, char **av)
 {
+	t_list	**cmds;
+
 	if (ac == 1)
 		return (1);
-	ft_parse_cmd(av[1]);
+	cmds = ft_parse_cmds(av[1]);
+	if (cmds == NULL)
+		return (1);
+	if (ft_cmds_excutor(cmds) == 1)
+		return (1);
+	ft_lstclear(cmds);
 	return (1);
 }
diff --git a/main.o b/main.o
index 7a6a47d..babf8b8 100644
Binary files a/main.o and b/main.o differ
diff --git a/minishell b/minishell
index 167b363..4c2107d 100755
Binary files a/minishell and b/minishell differ
diff --git a/minishell.h b/minishell.h
index f0ef128..151e9e1 100644
--- a/minishell.h
+++ b/minishell.h
@@ -24,7 +24,7 @@ typedef struct s_cmd
 	int	fd_in;
 	int	fd_out;
 	char	*executable;
-	char	*args;
+	char	**args;
 } t_cmd;
 
 #endif
diff --git a/outfile.o b/outfile.o
index 9f922f0..0f40334 100644
Binary files a/outfile.o and b/outfile.o differ
diff --git a/syntatics.c b/syntatics.c
index 475e244..ab9cc7d 100644
--- a/syntatics.c
+++ b/syntatics.c
@@ -1,7 +1,7 @@
 #include "libftx/libftx.h"
 #include "minishell.h"
 
-static int	ft_quote_verif(char *str)
+static int	ft_quote_verif(const char *str)
 {
 	if (ft_is_in_quote(str, ft_strlen(str)))
 	{
@@ -12,7 +12,7 @@ static int	ft_quote_verif(char *str)
 		return (0);
 }
 
-static int	ft_multipipe(char *str)
+static int	ft_multipipe(const char *str)
 {
 	size_t	i;
 	size_t	y;
@@ -21,21 +21,36 @@ static int	ft_multipipe(char *str)
 	while (str[i] != '\0')
 	{
 		y = 0;
-		while (str[i + y] == '|' && ft_is_in_quote(str, i))
+		while (str[i + y] == '|' && !ft_is_in_quote(str, i))
 		{
-			y++;
-			if (y > 1)
+			if (y > 0)
 			{
 				ft_eprintf("minishell: Multiple pipes is not supported\n");
 				return (1);
 			}
+			y++;
 		}
 		i++;
 	}
 	return (0);
 }
 
-int	ft_syntatic_verif(char *str)
+static int	ft_pipe_is_alone(const char *str)
 {
-	return (ft_quote_verif(str) || ft_multipipe(str));
+	size_t	i;
+
+	i = ft_strlen(str) - 1;
+	while (str[i] != '|' && i > 0)
+	{
+		if (str[i] != ' ')
+			return (0);
+		i--;
+	}
+	ft_eprintf("minishell: Pipe must be followed by a command or redirection\n");
+	return (1);
+}
+
+int	ft_syntatic_verif(const char *str)
+{
+	return (ft_quote_verif(str) || ft_multipipe(str) || ft_pipe_is_alone(str));
 }
diff --git a/syntatics.o b/syntatics.o
index e7a1364..cf454fd 100644
Binary files a/syntatics.o and b/syntatics.o differ
diff --git a/t b/t
index e69de29..d0b1d06 100644
--- a/t
+++ b/t
@@ -0,0 +1,24 @@
+a.out
+argprinter
+d
+execution.c
+file.c
+file.o
+ft_split_quoted.c
+ft_split_quoted.o
+heredoc.c
+heredoc.o
+infile.c
+infile.o
+libftx
+main.c
+main.o
+Makefile
+minishell
+minishell.h
+outfile.c
+outfile.o
+syntatics.c
+syntatics.o
+t
+utils
diff --git a/utils/ft_getstr.c b/utils/ft_getstr.c
index c55fed4..b7f88ca 100644
--- a/utils/ft_getstr.c
+++ b/utils/ft_getstr.c
@@ -1,11 +1,11 @@
 #include "utils.h"
 
-char	*ft_getstr(char *str, size_t n)
+char	*ft_getstr(const char *str, size_t n)
 {
 	size_t	start;
 	size_t	stop;
 	char	c;
-	int	quote;
+	int		quote;
 
 	start = n;
 	stop = n;
diff --git a/utils/ft_getstr.o b/utils/ft_getstr.o
index 34d708b..abfa88a 100644
Binary files a/utils/ft_getstr.o and b/utils/ft_getstr.o differ
diff --git a/utils/ft_strnchr.c b/utils/ft_strnchr.c
index 6654db9..d385f48 100644
--- a/utils/ft_strnchr.c
+++ b/utils/ft_strnchr.c
@@ -1,6 +1,6 @@
 #include "utils.h"
 
-ssize_t	ft_strnchr(char *str, char c)
+ssize_t	ft_strnchr(const char *str, char c)
 {
 	size_t	i;
 
diff --git a/utils/ft_strnchr.o b/utils/ft_strnchr.o
index 4acfc36..2069436 100644
Binary files a/utils/ft_strnchr.o and b/utils/ft_strnchr.o differ
diff --git a/utils/ft_strncpy.c b/utils/ft_strncpy.c
index 16de576..8eca3f1 100644
--- a/utils/ft_strncpy.c
+++ b/utils/ft_strncpy.c
@@ -1,6 +1,6 @@
 #include "utils.h"
 
-size_t	ft_strncpy(char *dst, char *src, size_t n)
+size_t	ft_strncpy(char *dst, const char *src, size_t n)
 {
 	size_t	i;
 
diff --git a/utils/ft_strncpy.o b/utils/ft_strncpy.o
index f777e2b..07b66cd 100644
Binary files a/utils/ft_strncpy.o and b/utils/ft_strncpy.o differ
diff --git a/utils/ft_strreplace.c b/utils/ft_strreplace.c
index 8a2a2ba..cfe92bf 100644
--- a/utils/ft_strreplace.c
+++ b/utils/ft_strreplace.c
@@ -1,11 +1,12 @@
 #include "utils.h"
 
-char	*ft_strreplace(char *str, char *fill, size_t start, size_t stop)
+char	*ft_strreplace(char *str, const char *fill, size_t start, size_t stop)
 {
 	char	*out;
 	size_t	sum;
 
-	out = malloc((ft_strlen(str) + ft_strlen(fill) - (stop - start) + 1 * sizeof(char)));
+	out = malloc((ft_strlen(str) + ft_strlen(fill) - (stop - start) + 1
+				* sizeof(char)));
 	if (out == NULL)
 		return (NULL);
 	ft_strncpy(out, str, start);
diff --git a/utils/ft_strreplace.o b/utils/ft_strreplace.o
index 3dbc090..ea3e08c 100644
Binary files a/utils/ft_strreplace.o and b/utils/ft_strreplace.o differ