CommandShell

This project implements a simple Unix shell from scratch, designed to handle job control and support basic shell functionalities. The lab provided a practical way to learn about process management, signal handling, and interaction with the operating system.

Features

• Job control: Built-in support for running processes in the foreground and background, listing jobs, and managing job states.
• Signal handling: Graceful handling of SIGINT and SIGTSTP signals.
• Trace-driven testing: Verified against various scenarios using predefined trace files.

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Project Files

Core Files

• Makefile: Automates the compilation of the shell program and runs tests to validate its functionality.
• README.md: This file, detailing the project structure and functionality.
• tsh.c: The main source file for the shell program.

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Testing and Utilities

• sdriver.pl: A trace-driven testing driver for the shell program.
• trace*.txt: A set of 15 trace files designed to simulate and test various shell interactions.
• tsh.out: Sample outputs from test runs.

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Helper Programs

• myspin.c: Spins for a user-defined number of seconds, simulating a long-running process.
• mysplit.c: Forks a child process that spins for a user-defined number of seconds.
• mystop.c: Spins for a user-defined number of seconds and then sends SIGTSTP to itself.
• myint.c: Spins for a user-defined number of seconds and then sends SIGINT to itself.

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How to Use

1. Clone this repository:

   git clone https://github.com/LALITH0110/CommandShell
   cd <repository-directory>

2. Compile the shell program:

   make

3. Run the shell:

   ./tsh