C-Shell

About the Project

A feature-rich shell implementation written in C for the Operating Systems and Networks course. This shell provides core functionality similar to bash while implementing custom commands and features.

GitHub

Features

Core Shell Features

• Custom prompt showing username, hostname and current directory
• Support for ’;’ separated multiple commands
• Background process execution with ’&’ operator
• Error handling for invalid commands
• Session command history with ‘log’ command

Custom Commands

• hop: Directory navigation with support for relative/absolute paths
• reveal: List files/directories with color coding and detailed info
• proclore: Process information display
• seek: File/directory search with multiple options
• activities: List running processes spawned by shell

Process Management

• Background process execution and monitoring
• Process status tracking
• Signal handling (SIGINT, SIGTSTP)
• Foreground/Background process switching

I/O Features

• Input/Output redirection (>, >>, <)
• Support for command piping
• Multiple pipe commands
• Combined redirection and piping

Additional Features

• Custom shell configuration via .myshrc
• Process signal management with ‘ping’ command
• Foreground/Background process control (fg, bg)
• Session command history persistence
• Color-coded output for files and directories

Technologies

• C Programming
• System Calls
• Process Management
• Signal Handling
• File I/O