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SD Card Backup and Upload to Nextcloud

This repository contains a Bash script that creates a compressed image of your SD card, excluding unused space, and uploads it to Nextcloud using rclone.

Description

The script performs the following tasks:

1. Calculates the effective filesystem size: Uses dumpe2fs to get the number of used blocks and block size of the specified partition.
2. Creates an image of the SD card: Uses dd to create an image of the SD card, compresses it with gzip, and saves it in a local backup directory.
3. Uploads the image to Nextcloud: Uses rclone to upload the compressed image to Nextcloud.
4. Removes the local backup file: Deletes the local backup file after uploading to free up space.

Requirements

• Operating System: Debian or a compatible Linux distribution
• Tools:
  • dd (to create the SD card image)
  • gzip (to compress the image)
  • dumpe2fs (to get filesystem information)
  • rclone (to upload the image to Nextcloud)
• Permissions: The script requires sudo permissions for dumpe2fs and dd.

Setup

1. Install rclone: Follow the rclone installation guide for your operating system.

2. Configure rclone: Run rclone config to set up a remote for Nextcloud. The remote name should be specified in the script configuration (e.g., remote:/backup).

3. Edit the Script: Update the following variables in the script as needed:

   • SD_CARD: The device name of your SD card (e.g., /dev/sdX)
   • PARTITION: The main partition name (e.g., /dev/sdX1)
   • BACKUP_DIR: The local directory where the image will be saved (e.g., /path/to/backup)
   • IMAGE_NAME: The name of the backup image
   • RCLONE_REMOTE: The name of the rclone remote configured for Nextcloud

4. Grant Execute Permissions to the Script:

   chmod +x backup_sd_card.sh

Running the Script

Execute the script with superuser permissions:

sudo ./backup_sd_card.sh

Notes

• Ensure that the SD card is not mounted during the script execution to avoid conflicts.
• Check the logs for any errors and verify that the backup completed successfully.

If you found this guide helpful and would like to support the project, consider making a donation. Your contributions help maintain and improve this resource.

Donate via Bitcoin

You can send Bitcoin directly to the following address:

bc1qy0l39zl7spspzhsuv96c8axnvksypfh8ehvx3e

Donate via Lightning Network

For faster and lower-fee donations, you can use the Lightning Network:

[email protected]

Thank you for your support!

License

This project is licensed under the MIT License - see the LICENSE file for details.

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