TinyShell

TinyShell is a C++ application that emulates a Unix-like command-line shell. It supports key shell functionalities such as program execution, piping, redirection, background jobs, and signal handling, all built from scratch using low-level POSIX system calls.

🔧 Built as part of an Operating Systems project to understand process control, job scheduling, and user-kernel interaction in Unix-based environments.

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🚀 Features

• Program Execution: Run standard Linux commands using fork, execvp, and waitpid.
• Input/Output Redirection: Supports < and > for redirecting stdin and stdout.
• Piping: Connect multiple commands using | with proper pipe creation and chaining.
• Background Execution: Use & to run commands in the background.
• Job Control: Implements jobs, fg, and bg using setpgid, tcsetpgrp, and kill.
• Signal Handling: Supports Ctrl+C (SIGINT) and Ctrl+Z (SIGTSTP) for stopping and interrupting jobs.
• Command History with Arrow Keys: Navigate shell history using ↑/↓ via the readline library.
• Modular Codebase: Includes modular components like builtin.cpp, pipe.cpp, job.cpp, signal.cpp, and more.