TP 2

Université du Québec à Rimouski
Course: INF14107 – Architecture des Systèmes Informatiques
Assignment: Travail 2 – Linux Scripting
Topic: Organisation Intelligente des Fichiers

🎯 Objective

Folders like Documents or Downloads often contain many files of different types: images, documents, audio, video, code, etc.
Organizing files by type improves visibility and makes searching much easier — but doing this manually is time-consuming.

Goal: Create a shell script that automates this file organization task.

📋 Part I: Basic File Organization Script (13 pts)

Write a Shell script that can be launched from the terminal to organize files by type into different folders. Also generate an information file containing a description of the organized folder.

✅ Required Tasks

1. Create a files/ directory containing sample files to organize:

   • Images: .png, .jpg
   • Documents: .odt, .txt
   • Code: .py, .php, .cpp
     (See Figure 1.1 for reference)
     Place this folder in the same directory as your final script.

2. Create a .sh script file with:

   • A proper Shebang line (#!/bin/bash)
   • Executable permissions (chmod +x script.sh)

3. Read the contents of the files/ directory and store filenames in an array using a for loop.

4. Extract file extensions from each filename (hint: use ${file##*.})

5. Copy files from files/ into a new directory named Files_$USER (where $USER is the current username), created by the script.

6. Filter and move files by extension into categorized subfolders:

   Images:  .png, .jpg   → images/
   Docs:    .odt, .txt   → docs/
   Code:    .py, .php, .cpp → code/
   

7. Generate an info.txt file containing:

   • Number of files in images/
   • Number of files in docs/
   • Number of files in code/
   • Total number of files
   • Current date
   • Username ($USER)

🖼️ Expected Output

Assemble all steps into a single, functional shell script that achieves the stated objective.

🚀 Part II: Advanced Configurable Script (2 pts)

Create a second, more flexible script that:

• Accepts a custom directory path as input (the folder to organize)
• Uses a configuration file named extension.txt to define file-type mappings

📄 Example extension.txt format:

Image: png, bmp, gif
Code: cs, php, cpp
Document: odt, txt, pdf
Audio: mp3, wav, flac

This allows the script to dynamically categorize files based on user-defined rules — making it reusable for any folder structure.

🛠️ Technical Requirements

• Language: Bash/Shell scripting
• Permissions: Script must be executable (chmod +x)
• Variables: Use $USER, parameter expansion ${file##*.}, arrays, loops
• File operations: mkdir, cp/mv, echo, redirection >
• Portability: Should run on standard Linux terminals