Minishell - @42Born2Code

As beautiful as a shell

About

Minishell is the second project of the Unix branch at 42. It's a minimum viable version of a real shell. The main goal is to have a good understanding of process creation and synchronisation using the C programmming language.

Installation & Usage

Requirements

The only requirements are:

• GNU make (v3.81)
• GCC (v4.2.1)

Those versions are the ones used during development.

Building the program

1. Download/Clone this repo

    git clone https://github.com/r4meau/minishell
   

2. cd into the root directory and run make

    cd minishell
    make
   

Running the program

After building the source, run ./minishell from the project root.

Main Project Instructions

Mandatory

• Can only use C
• Must respect the school imposed coding style (The Norme)
• No memory leaks
• Implement a series of builtins: echo, cd, setenv, unsetenv, env, exit
• Manage the errors without using errno, by displaying a message adapted to the error output
• Can only use these standard library functions:
  • malloc, free
  • access
  • open, close, read, write
  • opendir, readdir, closedir
  • getcwd, chdir
  • stat, lstat, fstat
  • fork, execve
  • wait, waitpid, wait3, wait4
  • signal, kill
  • exit
• Must have a Makefile to build the program
• The binary file must be named minishell
• Can use Libft
• Handle program interruption (Ctrl + D)
• Click here for the rest

Bonuses

• Signal management (specifically Ctrl + C)
• PATH's right management (error handling)
• Multiple commands (semi colons)

Notes

• You can find the project instructions by clicking here
• I commented the whole codebase so it's easy to navigate and understand it.
• No need to mention the odd spacing in files, I'm using a tab size of 4.
• There are probably better ways to implement it, we are limited by a set of functions at my school (just to make it harder and give us a deeper understanding of what's happening in the back), please, review the project instructions before you explain how X or Y would have been a better way to do it ;)

Enjoy!