V-Backup: Encrypted Backup Script

3 months ago 5

A robust, secure backup solution written in V language that creates encrypted, signed, and compressed backups with real-time notifications.

🔐	GPG Encryption & Signing - All backups are encrypted and digitally signed
📦	High Compression - Uses pigz for parallel gzip compression
📱	Real-time Notifications - Sends status updates via ntfy.sh
⚡	Fast & Efficient - Written in V for optimal performance
🛡️	Security First - Handles sensitive directories with proper permissions
📊	Detailed Reporting - Comprehensive backup statistics and status
🎯	YAML Configuration - Easy-to-manage configuration file

Ensure the following tools are installed on your system:

Clone or download the script
Make it executable:
Configure your backup settings in backups.yaml
Run the backup:

The script uses a YAML configuration file (backups.yaml) with the following structure:

configs: gpg_email: "[email protected]" # (1) dest_dir: "/path/to/backup/directory" # (2) ntfy: topic: "your-backup-topic" # (3) url: "https://ntfy.sh" # (4) backups: - title: "DUMMY" # (5) path: "/tmp" - title: "SSH Keys" # (6) path: "/home/user/.ssh" - title: "GPG Keys" path: "/home/user/.gnupg" - title: "Application Config" path: "/home/user/.config/myapp"

Email associated with your GPG key
Directory where encrypted backups will be stored
ntfy.sh topic for notifications
ntfy.sh server URL
Dummy entry - do not remove, used for array initialization
Actual backup entries with title and path

Before running the script, ensure you have a GPG key pair

The script uses ntfy.sh for real-time notifications

=== 🔒 BACKUP SCRIPT COM GPG === ✅ Chave GPG encontrada 🚀 Iniciando backups criptografados... 📦 Processando: SSH Keys 📂 Origem: /home/user/.ssh 💾 Arquivo temporário: /home/user/vBackups/ssh_keys_2025-07-07_18-57-04.tar.gz 🔐 Usando sudo para diretório sensível ✅ Backup criado: 2.3 KB 🔐 Criptografando e assinando com GPG... ✅ Arquivo criptografado: ssh_keys_2025-07-07_18-57-04.tar.gz.gpg 🗑️ Removendo arquivo não criptografado... 🔒 Backup final: ssh_keys_2025-07-07_18-57-04.tar.gz.gpg (3.1 KB) === 📊 RESUMO FINAL === ✅ Backups bem-sucedidos: 3/3 📦 Tamanho total dos backups: 15.7 MB 🔒 Todos os backups foram criptografados e assinados 📧 Chave GPG usada: [email protected] 🎉 Todos os backups foram concluídos com sucesso! 📱 Enviando notificação...

graph TD A[Start] --> B[Check Dependencies] B --> C[Load YAML Config] C --> D[Verify GPG Key] D --> E[Create Destination Directory] E --> F[Process Each Backup Item] F --> G[Create Compressed Archive] G --> H[Encrypt & Sign with GPG] H --> I[Remove Unencrypted File] I --> J[Update Statistics] J --> K{More Items?} K -->|Yes| F K -->|No| L[Send Notification] L --> M[End]

7.2. File Naming Convention

Backup files follow this naming pattern:

{slugified_title}_{timestamp}.tar.gz.gpg

Example: ssh_keys_2025-07-07_18-57-04.tar.gz.gpg

Encryption: All backups are encrypted using GPG with your public key
Digital Signing: Files are signed with your private key for authenticity
Secure Permissions: Sensitive directories (.ssh, .gnupg) are handled with sudo
Cleanup: Unencrypted temporary files are automatically removed

The script uses pigz for parallel compression. You can modify the compression command in the source code:

// Current: tar -I pigz -cf // Alternative: tar -czf (standard gzip) // Alternative: tar -I "xz -T0" -cf (xz compression)

8.2. Scheduling with Cron

Add to your crontab for automated backups:

# Daily backup at 2 AM 0 2 * * * /path/to/vbackup.vsh # Weekly backup on Sundays at 3 AM 0 3 * * 0 /path/to/vbackup.vsh

Create a systemd service and timer for more advanced scheduling:

backup.service

[Unit] Description=V-Backup Service After=network.target [Service] Type=oneshot User=your-username WorkingDirectory=/path/to/script ExecStart=/path/to/vbackup.vsh

backup.timer

[Unit] Description=Run V-Backup daily Requires=backup.service [Timer] OnCalendar=daily Persistent=true [Install] WantedBy=timers.target

For debugging, uncomment the debug line in the run_cmd function: