42_Shell

This project is about writing the most stable and most complete UNIX shell possible.

Compiling Program

The 42_Shell program wil compile into the executable 42sh after having cloned this repository into the desired location and running the command make inside the cloned repository.

cd ~/Desktop &&
git clone https://github.com/amnotme/42_Shell.git &&
cd 42_Shell &&
make

Standard features of the custom shell program (42sh)

The 42sh will function similiarly to a regular shell / terminal. The shell program will be able to have the following basic features:

A minimum line acquisition:

• Prompt display.
• Reading of a command line without line edition.
• Proper space and tabulations management.

The following builtins including all their features if they have any (the strict minimum being the features listed in POSIX standard):

• cd

• echo

• exit

• env

• setenv

• unsetenv

• Simple execution of simple command with arguments and PATH management.

• Error and command’s return value management.

• The following redirections: ">", ">>", "<" and "|".

• The following logical operators "&&" and "||".

• The ";" separator.

In use

Start of shell program:

Execution of duplicated UNIX commands: