GitHub - fkymy/minishell: Re-implementation of a UNIX shell

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Name		Name	Last commit message	Last commit date
Latest commit History 163 Commits
libft		libft
test		test
.gitignore		.gitignore
Makefile		Makefile
README		README
builtin.c		builtin.c
command.c		command.c
commandline.c		commandline.c
env.c		env.c
env_init.c		env_init.c
env_make.c		env_make.c
env_utils.c		env_utils.c
execute.c		execute.c
ft_cd.c		ft_cd.c
ft_cd_utils.c		ft_cd_utils.c
ft_cd_utils2.c		ft_cd_utils2.c
ft_echo.c		ft_echo.c
ft_env.c		ft_env.c
ft_exit.c		ft_exit.c
ft_export.c		ft_export.c
ft_pwd.c		ft_pwd.c
ft_unset.c		ft_unset.c
main.c		main.c
minishell.h		minishell.h
parse.c		parse.c
path.c		path.c
path_utils.c		path_utils.c
pipeline.c		pipeline.c
redir.c		redir.c
shell_utils.c		shell_utils.c
signal.c		signal.c
token.c		token.c
vector.c		vector.c
wordexp.c		wordexp.c
wordexp_quote.c		wordexp_quote.c
wordexp_var.c		wordexp_var.c

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           minishell: Re-implementation of a UNIX Shell

minishell is a re-implementation of Bash-like UNIX shell. The purpose
of this project is to learn about system calls for creating, managing,
and coordinating processes. Features of minishell includes: parsing of
command lines, execution of foreground commands, conditional comamnds,
I/O redirections, pipes, and command interruption through signals.

minishell command line has the following BNF grammer:

<commandline> ::= <list>
        |  <list> ";"
        |  <list> "&"

<list> ::= <andor>
        |  <list> ";" <andor>
        |  <list> "&" <andor>

<andor> ::= <pipeline>
        |  <andor> "&&" <pipeline>
        |  <andor> "||" <pipeline>

<pipeline> ::=  <command>
        |  <pipeline> "|" <command>

<command>  ::=  <word>
        |  <redirection_list>
        |  <command> <word>
        |  <command> <redirection_list>

<redirection_list> ::= <io_redirection>
        |  <redirection_list> <io_redirection>

<io_redirection> ::= <redirection_op> <filename>

<redirection_op> ::= "<" | ">" | ">>"

BUILTINS

The following builtin commands are implemented: echo, cd, pwd, export,
unset, env, exit.