ELEC50014 Software Systems Assignment

Name	CID
Dzuldiniy Hussain	02574233
Carys Leung	02565398

A1: S3 Subshell

All features mentioned below are fully implemented. You can find our test text files in A1/txt/

Basic features implemented:

• Basic commands (E.g. whoami, ls, clear, grep, touch, etc..)
• Commands with redirection (<, >, >>)
• Support for cd ($ cd .., $ cd -)
  • $ cd - prints the last working directory
  • Current working directory is part of the shell prompt
• Commands with pipes (works with redirection)
• Batched commands (works with pipes and redirection)

Extension features implemented:

• Subshells
• Nested Subshells
• Globbing (*, ?)

A2: Multi-threaded Chat Application

All features mentioned below are fully implemented. You can find our test files in ... , also a compile shell file for easy execution

Basic features implemented:

• Client-side requirements
• Server-side requirements
• Synchronisation requirements (Concurrency and Locks using semaphores to avoid race conditions)
• User interface
  • Chat clients can connect from individual terminals
  • Chat history is shown to all connected clients and update simultaneously

Extension features implemented:

• History at connection (15 most recent chats are shown to newly joined client)
• Partially implemented: Ping inactive client