Minishell 🐚

A Lightweight Unix Shell Built in C

Minishell is a simplified Unix shell developed as part of the 42 curriculum. It replicates core features of standard shells like bash, zsh, and sh, with custom implementation of process control, piping, signal handling, and redirections.

The goal of the project was to deepen understanding of low-level UNIX system calls, process management, and terminal behavior in C.

✨ Key Features

• Built-in commands: cd, echo, pwd, export, unset, env, exit
• Support for command pipelines (|)
• Input/output redirections (>, >>, <) and heredocs (<<)
• Signal handling (e.g. Ctrl+C, Ctrl+\)
• Environment variable parsing and expansion
• Forking and execve for external binaries
• Exit code handling and shell loop management

🛠 Tech Stack

Language & Libraries

• C (C89 / C99)
• POSIX standard libraries (unistd.h, stdlib.h, signal.h, etc.)

Concepts

• Process creation (fork, execve, waitpid)
• Signal management (SIGINT, SIGQUIT, etc.)
• File descriptors and redirections
• Environment variable manipulation
• Parsing and tokenization (minimal shell grammar)

📬 Contact

Built and maintainced by @lulubas