Description 👌

This is simply a recreation of a shell that takes user inputs (commands with arguements) and output accourntly Basic loop of a shell :

1. Print input
2. Read a line from a standa input (solution)
3. Turn the command lines string into an executable program
4. Execute

Files contents 🗂️

files	content
Authors	List of contributors to this project
Readme	The README file
Shell.h	The header file
main.c	File that contain the main code
execute.c	File contain the execute functions
path.c	File that contain the path functions
split.c	File that contain the split functions
_realloc.c	Function containing realloc
getenv.c	Function contain env functions
functions.c	Function that contain builtins

Simple Shell 🐚

• the prompt is displayed each time a command has been executed
• This program displays a prompt and wait for user type a command
• When the user type EXIT, shell will end and exit the interface
• The program print the current environement when user type ENV
• The program execute the most commun shell commands such as
  • LS
  • PWD
  • CD
  • EXIT
  • ENV
  • History ... with arguments
• The program quit when the user enter CTRL + C
• The user could stop the program using CTRL + D

List of functions and system calls we could use

List of allowed functions and system calls in this project :

access (man 2 access)
chdir (man 2 chdir)
close (man 2 close)
closedir (man 3 closedir)
execve (man 2 execve)
exit (man 3 exit)
fork (man 2 fork)
free (man 3 free)
fstat (man 2 fstat)
getcwd (man 3 getcwd)
getline (man 3 getline)
kill (man 2 kill)
lstat (man 2 lstat)
malloc (man 3 malloc)
open (man 2 open)
opendir (man 3 opendir)
perror (man 3 perror)
read (man 2 read)
readdir (man 3 readdir)
signal (man 2 signal)
stat (man 2 stat)
strtok (man 3 strtok)
wait (man 2 wait)
waitpid (man 2 waitpid)
wait3 (man 2 wait3)
wait4 (man 2 wait4)
write (man 2 write)
_exit (man 2 _exit)

Process description 👨‍💻

How the shell actually works : A parents process is one that creates a child process using a fork () system call. On the success of a fork() system call, the pid of the child process is returned to the parent process and 0 is returned to the child process. on the failure to the parent process a child process is not created.

Flowchart of simple shell 💻

License 👥

Authors :

• Mahdi Bani < 5035@holbertonschool.com >
• Mohamed Ali Krifa < 4997@holbertonschool.com >
• Imen Mansouri < imen.mansouri@holberthonstudents.com >

This project was made as part of the curriculum in HOLBERTON SCHOOL