<img width="2146" height="548" alt="grafik" src="https://github.com/user-attachments/assets/a2c1ab2f-e400-4a51-821e-83d4aa32e511" />

Minishell

Minishell is a small command-line shell written in C that replicates core functionalities of Unix shells like bash. It's a project focused on deepening knowledge of process management, I/O redirection, parsing, and system calls.

🚀 Features

• Command execution (built-in and external)
• Pipes and redirections (>, >>, <, <<)
• Environment variable handling (e.g., $HOME, $?)
• Heredoc support with <<
• Signal handling (Ctrl-C, Ctrl-D, Ctrl-\)
• Dynamic prompt with username and directory
• Built-in commands: cd, echo, export, unset, env, exit

⚙️ How It Works

1. Input parsing: Uses readline() to get user input.
2. Lexing and tokenization: Recognizes quotes, escapes, and expands environment variables.
3. Command structure: Builds a linked list of commands with arguments and redirections.
4. Execution:
   • Uses fork() to create child processes.
   • Redirects input/output with dup2().
   • Executes external commands with execve() or handles built-ins in the parent.
5. Memory management: Frees dynamic memory and closes file descriptors properly.
6. Signal customization: Reacts differently to interrupts in heredocs and subprocesses.

📁 Usage

make           # Compile the project
./minishell    # Launch the shell
exit           # Exit the shell

<img width="664" alt="image" src="https://github.com/user-attachments/assets/a12918ec-35e3-4e41-a5ef-8780b92c3364" />