Proton Lumo im Vergleich mit ChatGPT, Gemini, Perplexity und Mistral

#!/bin/bash

# Script to backup ~/Dokumente directory to ~/Backups with current date
# Author: Backup Script
# Date: 2025-08-17

# Enable strict error handling
set -e
set -u

# Define global variables
readonly SOURCE_DIR="${HOME}/Dokumente"
readonly BACKUP_DIR="${HOME}/Backups"
# Declare and assign separately to avoid masking return values
DATE_FORMAT=$(date +"%Y-%m-%d")
readonly BACKUP_FILENAME="dokumente_backup_${DATE_FORMAT}.zip"
readonly BACKUP_PATH="${BACKUP_DIR}/${BACKUP_FILENAME}"

# Function to check if a directory exists
check_directory_exists() {
    local dir_path="${1}"

    if [[ ! -d "${dir_path}" ]]; then
        echo "Error: Directory '${dir_path}' does not exist"
        return 1
    fi

    return 0
}

# Function to create backup directory if it doesn't exist
create_backup_directory() {
    local backup_dir="${1}"

    if [[ ! -d "${backup_dir}" ]]; then
        echo "Creating backup directory: ${backup_dir}"

        # Check exit code directly instead of using $?
        if ! mkdir -p "${backup_dir}"; then
            echo "Error: Failed to create backup directory '${backup_dir}'"
            exit 1
        fi

        echo "Backup directory created successfully"
    else
        echo "Backup directory already exists: ${backup_dir}"
    fi
}

# Function to check if backup file already exists
check_existing_backup() {
    local backup_file="${1}"

    if [[ -f "${backup_file}" ]]; then
        echo "Warning: Backup file '${backup_file}' already exists"
        read -p "Do you want to overwrite it? (y/N): " -n 1 -r
        echo

        if [[ ! "${REPLY}" =~ ^[Yy]$ ]]; then
            echo "Backup cancelled by user"
            exit 0
        fi

        echo "Removing existing backup file..."
        rm "${backup_file}"
    fi
}

# Function to create the ZIP backup
create_zip_backup() {
    local source="${1}"
    local destination="${2}"

    echo "Starting backup process..."
    echo "Source: ${source}"
    echo "Destination: ${destination}"

    # Change to parent directory of source to avoid full path in ZIP
    cd "$(dirname "${source}")"

    # Create ZIP archive with compression and check exit code directly
    if ! zip -rq "${destination}" "$(basename "${source}")" -x "*.DS_Store" "*.Thumbs.db" "*.tmp"; then
        echo "Error: Failed to create ZIP backup"
        exit 1
    fi

    echo "Backup created successfully: ${destination}"
}

# Function to display backup information
display_backup_info() {
    local backup_file="${1}"

    if [[ -f "${backup_file}" ]]; then
        # Declare and assign separately to avoid masking return values
        local file_size
        file_size=$(du -h "${backup_file}" | cut -f1)

        echo "Backup Information:"
        echo "  File: ${backup_file}"
        echo "  Size: ${file_size}"
        echo "  Created: $(date)"
    fi
}

# Main function to orchestrate the backup process
main() {
    echo "=== Document Backup Script ==="
    echo "Date: $(date)"
    echo

    # Check if source directory exists
    if ! check_directory_exists "${SOURCE_DIR}"; then
        exit 1
    fi

    # Create backup directory if needed
    create_backup_directory "${BACKUP_DIR}"

    # Check for existing backup file
    check_existing_backup "${BACKUP_PATH}"

    # Create the ZIP backup
    create_zip_backup "${SOURCE_DIR}" "${BACKUP_PATH}"

    # Display backup information
    display_backup_info "${BACKUP_PATH}"

    echo
    echo "Backup process completed successfully!"
}

# Execute main function
main "$@"

# Example usage:
# ./backup_documents.sh
#
# This script will:
# 1. Check if ~/Dokumente directory exists
# 2. Create ~/Backups directory if it doesn't exist
# 3. Create a ZIP file named dokumente_backup_YYYY-MM-DD.zip
# 4. Save the backup in ~/Backups directory
# 5. Display backup information upon completion
#
# Requirements:
# - zip command must be installed
# - Read access to ~/Dokumente directory
# - Write access to home directory for creating ~/Backups
#
# Note: The script excludes common system files like .DS_Store, .Thumbs.db, and .tmp files

=== Document Backup Script ===
Date: So 17. Aug 11:12:44 CEST 2025

Backup directory already exists: /var/home/tealk/Backups
Warning: Backup file '/var/home/tealk/Backups/dokumente_backup_2025-08-17.zip' already exists
Do you want to overwrite it? (y/N): y
Removing existing backup file...
Starting backup process...
Source: /var/home/tealk/Templates
Destination: /var/home/tealk/Backups/dokumente_backup_2025-08-17.zip
Backup created successfully: /var/home/tealk/Backups/dokumente_backup_2025-08-17.zip
Backup Information:
  File: /var/home/tealk/Backups/dokumente_backup_2025-08-17.zip
  Size: 272K
  Created: So 17. Aug 11:12:45 CEST 2025

Backup process completed successfully!