Unix Shell

Overview

This Unix Shell project is a custom shell implementation developed in C++, drawing inspiration from well-known environments like bash and zsh. Utilizing POSIX system calls, the shell can interpret lines of input as individual user commands, proficiently managing operations such as ls, cat textfile.txt, and echo hello world. Beyond this, the shell is equipped with I/O redirection, piping, and offers a smooth user experience with features like tab completion.

Demo

Features:

• Command execution: Supports basic commands like ls, cat, and echo.
• I/O Redirection: Handle input and output redirection.
• Piping: Chain commands together using pipes.
• Tab Completion: Suggest command completions to improve user experience.

Installation and Setup

Prerequisites

• CMake (version 3.15 or higher)
• C++ Compiler (e.g., g++, clang++)

Ensure you have CMake and a C++ compiler installed on your system. You can download CMake from the (CMake official website)[https://cmake.org/download/] and the compiler from the (GNU Compiler Collection)[https://gcc.gnu.org/] or via your package manager.

Building the Project

1. Clone the repository:

   git clone https://github.com/reshmar00/Unix_Shell.git
   

2. Configure the build with CMake::

    cmake .
   

3. Build the project:

    make
   

Running the Shell

After the build process completes successfully, you can run the shell with the following command:

./Unix_Shell

Example Usage

(base) user@profile Unix_Shell % ./Unix_Shell 
ls
exec start: ls
CMakeCache.txt		README.md		main.cpp
CMakeFiles		StatesnCapitals.txt	shelpers.cpp
CMakeLists.txt		Unix_Shell		shelpers.hpp
Makefile		cmake_install.cmake	textfile.txt

cat textfile.txt
exec start: cat
Hey! This is what I have inside my textfile.txt
Here are some numbers: 0123456789
Here are some special characters: !@#$%^&*()
Goodbye!

echo hello 123!
exec start: echo
hello 123!

Additional Information

Project Structure

• main.cpp: Main source file containing the core loop of the shell.
• shelpers.cpp: Helper functions for shell operations.
• shelpers.hpp: Header file for the helper functions.
• CMakeLists.txt: CMake build configuration file.
• Makefile: Makefile generated by CMake for building the project.
• StatesnCapitals.txt: Sample text file used for testing.
• textfile.txt: Another sample text file used for testing.- unixShellDemo.gif: Demo of the Unix Shell in action.

Feel free to reach out if you have any questions or need further assistance. Enjoy using the Unix Shell!