Bash Homework: Backup & Restore System

Profile

NRP: ...

Name: ...

Objective

Create two bash scripts that implement a simple backup and restore system for a web application.

Project Structure

my-webapp/
├── src/           # Source code files
├── data/          # Application data
├── config/        # Configuration files
├── logs/          # Log files
└── backups/       # Backup storage directory

Tasks

Task 1: Create backup.sh

Write a script that creates backups of the web application:

• Create a timestamped backup file named: backup_YYYY-MM-DD_HH-MM-SS.zip
• Include all directories: src/, data/, config/, logs/
• Save the backup to the backups/ directory
• Display a success message showing the backup filename
• Handle errors gracefully and show error messages if backup fails

Task 2: Create restore.sh

Write a script that restores from the most recent backup:

• Automatically find and select the newest backup file
• Create a safety backup of the current state before restoring
• Extract and restore files from the latest backup
• Show progress messages during the restore process
• Display confirmation when restore is complete
• Handle cases where no backup files exist

Requirements

• Scripts should provide clear feedback to the user
• Display informative messages about what the script is doing
• Handle errors and show helpful error messages
• Exit with appropriate exit codes (0 for success, 1 for failure)
• Make scripts user-friendly with clear output

Helpful Commands

• date +"%Y-%m-%d_%H-%M-%S" - Generate timestamp
• zip -r archive.zip folders/ - Create archive
• ls -t *.zip | head -1 - Get newest file
• unzip -o archive.zip - Extract overwriting files
• [ -f filename ] - Check if file exists
• echo "message" - Display messages to user