Minishell 💻

As beautiful as a shell

About

• Minishell is a project at school 42.

• The objective of this project is to create a simple shell to learn a lot about processes and file descriptors.

• The existence of shells is linked to the very existence of IT. At the time, all coders agreed that communicating with a computer using aligned 1/0 switches was seriously irritating. It was only logical that they came up with the idea to communicate with a computer using interactive lines of commands in a language somewhat close to english. With Minishell, you’ll be able to travel through time and come back to problems people faced when Windows didn’t exist.

Functions

Only the following functions are allowed to be used in this project:

Function	Description	Function	Description
readline	read a line from the terminal	lstat	get file status
rl_clear_history	clear the history list by deleting all of the entries	fstat	get file status by fd
rl_on_new_line	tell the update routines that we have moved onto a new line	unlink	remove a specified file
rl_replace_line	replace the contents of rl_line_buffer with text	execve	execute program
rl_redisplay	change what's displayed on the screen	dup	duplicate a file descriptor
add_history	save the line in a history list of lines	dup2	duplicate a file descriptor
printf	format and print data	pipe	create pipe
malloc	allocate dynamic memory	opendir	open a directory
free	free dynamic memory	readdir	read a directory
write	write to a file descriptor	closedir	close a directory
access	check user's permissions for a file	strerror	return string describing error number
open	open and can create a file	perror	print a system error message
read	read from a file descriptor	isatty	test whether a file descriptor refers to a terminal
close	close a file descriptor	ttyname	return name of a terminal
fork	create a child process	ttyslot	find the slot of the current user's terminal in some file
wait	wait for process to change state	ioctl	control device
waitpid	wait for process to change state	getenv	get an environment variable
wait3	wait for process to change state	tcsetattr	control asynchronous communications ports
wait4	wait for process to change state	tcgetattr	control asynchronous communications ports
signal	ANSI C signal handling	tgetent	termcap database emulation
sigaction	examine and change a signal action	tgetflag	termcap database emulation
kill	send signal to a process	tgetnum	termcap database emulation
exit	cause normal process termination	tgetstr	termcap database emulation
getcwd	get current working directory	tgoto	termcap database emulation
chdir	change working directory	tputs	curses interfaces to terminfo database
stat	get file status by pathname

Starting

# Clone this project
$ git clone https://github.com/Mounadi05/42_Minishell

# Access
$ cd 42_Minishell

# Compile the project
$ make

# Compile the project in linux 
$ make linux 

# Run the project
$ ./minishell