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Coded with 💗 by: mflores- and pmaimait

Project

Subject PDF

The purpose of Minishell is to create a simple small shell program in C based on Bash.

A shell, in simple terms, is a command-line interface that allows you to interact with your computer's operating system by typing commands in order to tell it what to do.

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Supported feautures

The project's requirements:

• Prompt display
• Command history (⬆️ and ⬇️ arrows)
• System executables available from the environment (ls, cat, grep, etc.)
• Local executables (./minishell)
• Builtin commands :
  • echo (with option -n)
  • cd (with only a relative or absolute path)
  • pwd (no options)
  • export (no options)
  • unset (no options)
  • env (no options or arguments)
  • exit (with exit number)
• Pipes | connects two or more commands in a way that allows the output of one command to be used as the input for another
• Redirections:
  • > redirects output
  • >> redirects output in append mode
  • < redirects input
  • << DELIMITER displays a new prompt, reads user input until reaching DELIMITER, redirects user input to command input (does not update history)
• Environment variables (i.e. $USER or $HOME) that expand to their values.
  • $? expands to the exit status of the most recently executed foreground pipeline.
• User keyboard signals:
  • ctrl-c displays a new prompt line.
  • ctrl-d exits minishell
  • ctrl-\ does nothing

This Minishell DOES NOT support \, ;, &&, ||, or wildcards.

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Installation

Clone github repository and compile program:

git clone [email protected]:mariav7/minishell_42project.git
cd minishell_42project && make

Run the program:

./minishell

OR

Run the program using valgrind:

./leak_test.sh

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