diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..5be5f8c
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,61 @@
+#SETUP
+NAME		=	pipex
+CC			=	gcc
+FLAGS		=	-Wall -Wextra -Werror
+RM			=	rm -rf
+
+#FILES AND PATH
+HEADER_SRCS	=	pipex.h pipex_bonus.h
+HEADER_DIR	=	includes/
+HEADER		=	$(addprefix $(HEADER_DIR), $(HEADER_SRCS))
+
+MPATH_SRCS	=	pipex.c childs.c error.c free.c
+MPATH_DIR	=	mandatory/
+MPATH		=	$(addprefix $(MPATH_DIR), $(MPATH_SRCS))
+OBJ_M		=	$(MPATH:.c=.o)
+
+BPATH_SRCS	=	pipex_bonus.c error_bonus.c here_doc_bonus.c\
+				files_bonus.c free_bonus.c child_bonus.c
+BPATH_DIR	=	bonus/
+BPATH		=	$(addprefix $(BPATH_DIR), $(BPATH_SRCS))
+OBJ_B		=	$(BPATH:.c=.o)
+
+FUNC_SRCS	=	ft_strncmp.c ft_strdup.c ft_split.c ft_strjoin.c
+FUNC_DIR	=	functions/
+FUNC 		=	$(addprefix $(FUNC_DIR), $(FUNC_SRCS))\
+				gnl/get_next_line_utils.c gnl/get_next_line.c
+OBJ_F		=	$(FUNC:.c=.o)
+
+#COMMANDS
+%.o: %.c $(HEADER) Makefile
+				@${CC} ${FLAGS} -c $< -o $@
+
+$(NAME):		$(OBJ_F) $(OBJ_M)
+				@$(CC) $(OBJ_F) $(OBJ_M) -o $(NAME)
+				@echo -e "$(GREEN)$(NAME) created!$(DEFAULT)"
+
+all:			$(NAME)
+
+bonus:			$(OBJ_F) $(OBJ_B)
+				@$(CC) $(OBJ_F) $(OBJ_B) -o $(NAME)
+				@echo -e "$(GREEN)$(NAME) created!$(DEFAULT)"
+
+clean:
+				@$(RM) $(OBJ_M)
+				@$(RM) $(OBJ_F)
+				@$(RM) $(OBJ_B)
+				@echo -e "$(YELLOW)object files deleted!$(DEFAULT)"
+
+fclean:			clean
+				@$(RM) $(NAME)
+				@echo -e "$(RED)all deleted!$(DEFAULT)"
+
+re:				fclean all
+
+.PHONY:		all clean fclean bonus re
+
+#COLORS
+RED = \033[1;31m
+GREEN = \033[1;32m
+YELLOW = \033[1;33m
+DEFAULT = \033[0m
diff --git a/includes/pipex.h b/includes/pipex.h
new file mode 100644
index 0000000..9326a6a
--- /dev/null
+++ b/includes/pipex.h
@@ -0,0 +1,76 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   pipex.h                                            :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: bcaffere <bcaffere@student.21-school.ru    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2021/10/07 14:48:42 by bcaffere          #+#    #+#             */
+/*   Updated: 2021/10/13 20:44:01 by bcaffere         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#ifndef PIPEX_H
+# define PIPEX_H
+
+/* to write, read, close, access, pipe, dup, dup2, execve, fork */
+# include <unistd.h>
+# include <sys/types.h>
+# include <sys/uio.h>
+
+/* malloc, free, exit */
+# include <stdlib.h>
+
+/* open, unlink */
+# include <fcntl.h>
+
+/* waitpid, wait */
+# include <sys/wait.h>
+
+/* strerror */
+# include <string.h>
+
+/*to perror*/
+# include <stdio.h>
+
+/* to get_next_line */
+# include "../gnl/get_next_line.h"
+
+# define ERR_INFILE "Infile"
+# define ERR_OUTFILE "Outfile"
+# define ERR_INPUT "Invalid number of arguments.\n"
+# define ERR_PIPE "Pipe"
+# define ERR_CMD "Command not found\n"
+
+typedef struct s_pipex
+{
+	pid_t	pid1;
+	pid_t	pid2;
+	int		tube[2];
+	int		infile;
+	int		outfile;
+	char	*paths;
+	char	**cmd_paths;
+	char	**cmd_args;
+	char	*cmd;
+}t_pipex;
+
+/* childs.c */
+void	first_child(t_pipex pipex, char *argv[], char *envp[]);
+void	second_child(t_pipex pipex, char *argv[], char *envp[]);
+
+/* free.c */
+void	parent_free(t_pipex *pipex);
+void	child_free(t_pipex *pipex);
+
+/* error.c */
+void	msg_error(char *err);
+int		msg(char *err);
+
+/* funcions */
+char	*ft_strjoin(char const *s1, char const *s2);
+char	*ft_strdup(const char *src);
+char	**ft_split(char const *s, char c);
+int		ft_strncmp(const char *s1, const char *s2, size_t n);
+
+#endif
diff --git a/includes/pipex_bonus.h b/includes/pipex_bonus.h
new file mode 100644
index 0000000..7e03c9d
--- /dev/null
+++ b/includes/pipex_bonus.h
@@ -0,0 +1,94 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   pipex_bonus.h                                      :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: bcaffere <bcaffere@student.21-school.ru    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2021/10/13 16:09:50 by bcaffere          #+#    #+#             */
+/*   Updated: 2021/10/13 21:56:59 by bcaffere         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#ifndef PIPEX_BONUS_H
+# define PIPEX_BONUS_H
+
+/* to write, read, close, access, pipe, dup, dup2, execve, fork */
+# include <unistd.h>
+# include <sys/types.h>
+# include <sys/uio.h>
+
+/* malloc, free, exit */
+# include <stdlib.h>
+
+/* open, unlink */
+# include <fcntl.h>
+
+/* waitpid, wait */
+# include <sys/wait.h>
+
+/* strerror */
+# include <string.h>
+
+/*to perror*/
+# include <stdio.h>
+
+/* to get_next_line */
+# include "../gnl/get_next_line.h"
+
+# define ERR_INFILE "Infile"
+# define ERR_OUTFILE "Outfile"
+# define ERR_INPUT "Invalid number of arguments.\n"
+# define ERR_PIPE "Pipe"
+# define ERR_ENVP "Environment"
+# define ERR_CMD "Command not found: "
+# define ERR_HEREDOC "here_doc"
+
+typedef struct s_ppxb
+{
+	int		infile;
+	int		outfile;
+	char	*env_path;
+	char	**cmd_paths;
+	char	*cmd;
+	char	**cmd_args;
+	int		here_doc;
+	pid_t	pid;
+	int		cmd_nmbs;
+	int		pipe_nmbs;
+	int		*pipe;
+	int		idx;
+}t_ppxb;
+
+/* pipex_bonus.c */
+void	close_pipes(t_ppxb *pipex);
+
+/* child_bonus.c */
+void	child(t_ppxb pipex, char **argv, char **envp);
+
+/* free.c */
+void	parent_free(t_ppxb *pipex);
+void	child_free(t_ppxb *pipex);
+void	pipe_free(t_ppxb *pipex);
+
+/* files_bonus.c */
+char	*find_path(char **envp);
+void	get_infile(char **argv, t_ppxb *pipex);
+void	get_outfile(char *argv, t_ppxb *pipex);
+
+/* here_doc_bonus.c */
+int		args_in(char *arg, t_ppxb *pipex);
+void	here_doc(char *argv, t_ppxb *pipex);
+
+/* error_bonus.c */
+void	msg_error(char *err);
+void	msg_pipe(char *arg);
+int		msg(char *err);
+
+/* funcions */
+char	*ft_strjoin(char const *s1, char const *s2);
+char	*ft_strdup(const char *src);
+char	**ft_split(char const *s, char c);
+int		ft_strncmp(const char *s1, const char *s2, size_t n);
+
+#endif
diff --git a/mandatory/childs.c b/mandatory/childs.c
new file mode 100644
index 0000000..cb3753a
--- /dev/null
+++ b/mandatory/childs.c
@@ -0,0 +1,63 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   childs.c                                           :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: bcaffere <bcaffere@student.21-school.ru    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2021/10/09 14:58:40 by bcaffere          #+#    #+#             */
+/*   Updated: 2021/10/13 20:13:30 by bcaffere         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "../includes/pipex.h"
+
+static char	*get_cmd(char **paths, char *cmd)
+{
+	char	*tmp;
+	char	*command;
+
+	while (*paths)
+	{
+		tmp = ft_strjoin(*paths, "/");
+		command = ft_strjoin(tmp, cmd);
+		free(tmp);
+		if (access(command, 0) == 0)
+			return (command);
+		free(command);
+		paths++;
+	}
+	return (NULL);
+}
+
+void	first_child(t_pipex pipex, char *argv[], char *envp[])
+{
+	dup2(pipex.tube[1], 1);
+	close(pipex.tube[0]);
+	dup2(pipex.infile, 0);
+	pipex.cmd_args = ft_split(argv[2], ' ');
+	pipex.cmd = get_cmd(pipex.cmd_paths, pipex.cmd_args[0]);
+	if (!pipex.cmd)
+	{
+		child_free(&pipex);
+		msg(ERR_CMD);
+		exit(1);
+	}
+	execve(pipex.cmd, pipex.cmd_args, envp);
+}
+
+void	second_child(t_pipex pipex, char *argv[], char *envp[])
+{
+	dup2(pipex.tube[0], 0);
+	close(pipex.tube[1]);
+	dup2(pipex.outfile, 1);
+	pipex.cmd_args = ft_split(argv[3], ' ');
+	pipex.cmd = get_cmd(pipex.cmd_paths, pipex.cmd_args[0]);
+	if (!pipex.cmd)
+	{
+		child_free(&pipex);
+		msg(ERR_CMD);
+		exit(1);
+	}
+	execve(pipex.cmd, pipex.cmd_args, envp);
+}
diff --git a/mandatory/error.c b/mandatory/error.c
new file mode 100644
index 0000000..51707b7
--- /dev/null
+++ b/mandatory/error.c
@@ -0,0 +1,25 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   error.c                                            :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: bcaffere <bcaffere@student.21-school.ru    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2021/10/08 17:43:45 by bcaffere          #+#    #+#             */
+/*   Updated: 2021/10/13 13:28:06 by bcaffere         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "../includes/pipex.h"
+
+int	msg(char *err)
+{
+	write(2, err, ft_strlen(err));
+	return (1);
+}
+
+void	msg_error(char *err)
+{
+	perror(err);
+	exit (1);
+}
diff --git a/mandatory/free.c b/mandatory/free.c
new file mode 100644
index 0000000..f7a8dce
--- /dev/null
+++ b/mandatory/free.c
@@ -0,0 +1,42 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   free.c                                             :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: bcaffere <bcaffere@student.21-school.ru    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2021/10/09 14:56:20 by bcaffere          #+#    #+#             */
+/*   Updated: 2021/10/13 15:33:27 by bcaffere         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "../includes/pipex.h"
+
+void	parent_free(t_pipex *pipex)
+{
+	int	i;
+
+	i = 0;
+	close(pipex->infile);
+	close(pipex->outfile);
+	while (pipex->cmd_paths[i])
+	{
+		free(pipex->cmd_paths[i]);
+		i++;
+	}
+	free(pipex->cmd_paths);
+}
+
+void	child_free(t_pipex *pipex)
+{
+	int	i;
+
+	i = 0;
+	while (pipex->cmd_args[i])
+	{
+		free(pipex->cmd_args[i]);
+		i++;
+	}
+	free(pipex->cmd_args);
+	free(pipex->cmd);
+}
diff --git a/mandatory/pipex.c b/mandatory/pipex.c
new file mode 100644
index 0000000..0cc0e37
--- /dev/null
+++ b/mandatory/pipex.c
@@ -0,0 +1,55 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   pipex.c                                            :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: bcaffere <bcaffere@student.21-school.ru    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2021/10/07 14:47:01 by bcaffere          #+#    #+#             */
+/*   Updated: 2021/10/13 16:10:31 by bcaffere         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "../includes/pipex.h"
+
+char	*find_path(char **envp)
+{
+	while (ft_strncmp("PATH", *envp, 4))
+		envp++;
+	return (*envp + 5);
+}
+
+void	close_pipes(t_pipex *pipex)
+{
+	close(pipex->tube[0]);
+	close(pipex->tube[1]);
+}
+
+int	main(int argc, char *argv[], char *envp[])
+{
+	t_pipex	pipex;
+
+	if (argc != 5)
+		return (msg(ERR_INPUT));
+	pipex.infile = open(argv[1], O_RDONLY);
+	if (pipex.infile < 0)
+		msg_error(ERR_INFILE);
+	pipex.outfile = open(argv[argc - 1], O_TRUNC | O_CREAT | O_RDWR, 0000644);
+	if (pipex.outfile < 0)
+		msg_error(ERR_OUTFILE);
+	if (pipe(pipex.tube) < 0)
+		msg_error(ERR_PIPE);
+	pipex.paths = find_path(envp);
+	pipex.cmd_paths = ft_split(pipex.paths, ':');
+	pipex.pid1 = fork();
+	if (pipex.pid1 == 0)
+		first_child(pipex, argv, envp);
+	pipex.pid2 = fork();
+	if (pipex.pid2 == 0)
+		second_child(pipex, argv, envp);
+	close_pipes(&pipex);
+	waitpid(pipex.pid1, NULL, 0);
+	waitpid(pipex.pid2, NULL, 0);
+	parent_free(&pipex);
+	return (0);
+}