minishell

Minishell is a team project to create a basic shell program in C. It implements redirections and pipes, as well as environment variable expansions and the cd, echo, env, exit, export, pwd and unset builtin commands.

Usage

To compile:

make

To run the program:

./minishell

A prompt will appear. You may enter your commands to be executed.

Supported Features

Minishell is a miniature shell program based on Bash. Minishell supports:

• Prompt display
• Command history (⬆️ ⬇️ arrows)
• System executables available from the environment (ls, cat, grep, etc.)
• Local executables (./minishell)
• Builtin commands :
  • echo (and option -n)
  • cd (relative or absolute path)
  • pwd (no options)
  • export (no options)
  • unset (no options)
  • env (no options or arguments)
  • exit (with optional exit code)
• Pipes | which redirect output from one command to input for the next
• 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 $VAR) 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

❌ However, Minishell does not support \, ;, &&, ||, or wildcards.

🧹 Debugging & Memory Leaks

Minishell is tested with Valgrind to ensure memory safety.

valgrind --leak-check=full --show-leak-kinds=all --suppressions=readline.supp ./minishell

👥 Teammates

🐚 Tutku Çakır Yılmaz

🐚 Allyana Alombro