Shell Program

Overview

This repository contains my implementations of various shell programs. These programs mimic the functionality of a Unix shell, allowing users to execute commands, manage processes, and navigate the filesystem. The projects included here serve as practical examples of how shells work and the underlying mechanisms involved.

Key Topics:

• Command Execution: Handling user inputs to execute commands.
• Process Management: Managing foreground and background processes.
• I/O Redirection: Redirecting input and output for commands.
• Piping: Connecting the output of one command to the input of another.
• Built-in Commands: Implementing essential shell commands like cd, exit, and help.

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Folder Structure

Shell_program/
│
├── simple_shell.c              # Basic shell implementation with command execution
├── process_management.c         # Managing foreground and background processes
├── io_redirection.c             # Implementing I/O redirection in the shell
├── piping.c                     # Implementing piping between commands
└── built_in_commands.c          # Implementation of built-in shell commands

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Getting Started

1. Clone the repository:

   git clone https://github.com/josethomas45/Shell_program.git

2. Compile the C programs: You can compile the shell programs using GCC:

   gcc -o shell_program simple_shell.c

3. Run the Shell: Execute the compiled shell program:

   ./shell_program

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Key Features

1. Command Execution:

   • The shell reads user input, parses commands, and executes them using exec() system calls.

2. Process Management:

   • Allows execution of processes in the foreground and background using fork() and wait().

3. I/O Redirection:

   • Supports input (<) and output (>) redirection for executing commands with file input and output.

4. Piping:

   • Implemented the ability to pipe commands together using |, allowing for complex command execution sequences.

5. Built-in Commands:

   • Implemented essential built-in commands such as cd for changing directories and exit for terminating the shell.

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Requirements

• C Compiler: Ensure you have a C compiler like GCC installed.
• Linux/Unix Environment: Recommended for running and testing the shell programs.

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How to Contribute

Contributions are welcome! To contribute to this repository:

1. Fork the repository.
2. Create a new branch (git checkout -b feature-branch).
3. Make your changes and commit them (git commit -m 'Add new feature').
4. Push the changes to your branch (git push origin feature-branch).
5. Create a pull request.

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License

This project is licensed under the MIT License. See the LICENSE file for more details.

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Contact

For any questions, feedback, or suggestions, feel free to reach out:

Jose Thomas
GitHub Profile